Identifying the Most Interactive Object in Spatial Databases

Daichi Amagata, Takahiro Hara

Proc. of IEEE International Conference on Data Engineering (ICDE 2019)　p. 1286-1297　2019/04　Research paper (international conference proceedings)

Wikipedia-based Relatedness Measurements for Multilingual Short Text Clustering

Tatsuya Nakamura, Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

ACM Transactions on Asian and Low-Resource Language Information Processing　Vol. 18　No. 2　2019/02　Research paper (scientific journal)

Detecting Door Events Using a Smartphone via Active Sound Sensing.

Thilina Dissanayake, Takuya Maekawa, Daichi Amagata, Takahiro Hara

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)　Vol. 2　No. 4　2018/12　Research paper (scientific journal)

Optimal Replica Distribution in Edge-Node-Assisted Cloud-P2P Platforms for Real-Time Streaming

Wei Zhao, Jiajia Liu, Takahiro Hara

IEEE Transactions on Vehicular Technology　Vol. 67　No. 9　p. 8637-8646　2018/09　Research paper (scientific journal)

Estimating The Physical Distance Between Two Locations With Wi-Fi Received Signal Strength Information Using Obstacle-aware Approach

Tomoya Nakatani, Takuya Maekawa, Masumi Shirakawa, Takahiro Hara

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT)　2018/09　Research paper (scientific journal)

Environment-Adaptive Malicious Node Detection in MANETs with Ensemble Learning.

Boqi Gao, Takuya Maekawa, Daichi Amagata, Takahiro Hara

38th IEEE International Conference on Distributed Computing Systems, ICDCS 2018　p. 556-566　2018/07　Research paper (international conference proceedings)

ETC-IoT: Edge-Node-Assisted Transmitting for the Cloud-Centric Internet of Things

Wei Zhao, Jiajia Liu, Hongzhi Guo, Takahiro Hara

IEEE Network　Vol. 32　No. 3　p. 101-107　2018/05/01　Research paper (scientific journal)

IDF for Word N-grams

Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

ACM Transactions on Information Systems　2017/08　Research paper (scientific journal)

A General Framework for MaxRS and MaxCRS Monitoring in Spatial Data Streams

Daichi Amagata, Takahiro Hara

ACM Transactions on Spatial Algorithms and Systems　Vol. 3　No. 1　p. 1-34　2017/05　Research paper (scientific journal)

PolyCard: A learned cardinality estimator for intersection queries on spatial polygons

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

Journal of Intelligent Information Systems　2025/01/22　Research paper (scientific journal)

Extracting Political Interest Model from Interaction Data Based on Novel Word-level Bias Assignment

Yihong Zhang, Takahiro Hara

ACM Transactions on Intelligent Systems and Technology　Vol. 16　No. 1　2025/01　Research paper (scientific journal)

Multi-Modal Contrastive Learning for Medical Image Classification with Limited Training Data

Shengzhe Jiao, Yihong Zhang, Yuanyuan Wang, Shingo Mabu, Haoyang Xia, Takahiro Hara

Proc. of International Conference on Machine Learning and Applications (ICMLA)　p. 1083-1088　2024/12/18　Research paper (international conference proceedings)

Hypergraph Contrastive Learning with Graph Structure Learning for Recommendation

Yuma Dose, Shuichiro Haruta, Yihong Zhang, Takahiro Hara

Proc. of International Conference on Machine Learning and Applications (ICMLA)　p. 416-423　2024/12/18　Research paper (international conference proceedings)

Domain Adaptation Utilizing Texts and Visions for Cross-domain Recommendations with No Shared Users

Kentaro Shiga, Shuichiro Haruta, Zhi Li, Takahiro Hara

Proc. of International Conference on Machine Learning and Applications (ICMLA)　p. 17-24　2024/12/18　Research paper (international conference proceedings)

Word-Level Political Sentiments Inferred From Social Media and Application in Recommendation Diversification

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

ACM Transactions on the Web　Vol. 19　No. 1　p. 1-26　2024/12/11　Research paper (scientific journal)

Self-supervised Learning for Complex Activity Recognition through Motif Identification Learning

Qingxin Xia, Jaime Morales, Yongzhi Huang, Takahiro Hara, Kaishun Wu, Hirotomo Oshima, Masamitsu Fukuda, Yasuo Namioka, Takuya Maekawa

IEEE Transactions on Mobile Computing　2024/12　Research paper (scientific journal)

INCL: A Graph-based Recommendation Model Using Contrastive Learning for Inductive Scenario

Yuma Dose, Shuichiro Haruta, Takahiro Hara

Journal of Information Processing　Vol. 32　p. 929-937　2024/11/15　Research paper (scientific journal)

An Efficient Framework for Approximate Nearest Neighbor Search on High-dimensional Multi-metric Data

Uemura Reon, Daichi Amagata, Takahiro Hara

Proc. of International Conference on Similarity Search and Applications (SISAP)　2024/11　Research paper (international conference proceedings)

AoA-net: Estimating Angle-of-arrival Using Wi-Fi Channel State Information Based on Deep Neural Networks with Subcarrier Selection

Teerawat Kumrai, Zesheng Cai, Takuya Maekawa, Takahiro Hara, Kazuya Ohara, Tomoki Murakami, Hirantha Abeysekera

Journal of Information Processing　Vol. 32　p. 863-872　2024/10/15　Research paper (scientific journal)

Event Embedding Learning from Social Media Using Graph Topic Model Autoencoder

Yihong Zhang, Takahiro Hara

Proc. of International Conference on Advances in Social Networks Analysis and Mining (ASONAM-2024)　2024/09　Research paper (international conference proceedings)

Efficient Algorithms for Top-k Stabbing Queries on Weighted Interval Data

Daichi Amagata, Junya Yamada, Yuchen Ji, Takahiro Hara

Proc. of of International Conference on Database and Expert Systems Applications (DEXA 2024)　p. 146-152　2024/08/18　Research paper (international conference proceedings)

SAFE: Sampling-Assisted Fast Learned Cardinality Estimation for Dynamic Spatial Data

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

Proc. of of International Conference on Database and Expert Systems Applications (DEXA 2024)　p. 201-216　2024/08/17　Research paper (international conference proceedings)

Estimating Visited Stores Through Positive-Unlabeled Learning

Ryo Shirai, Ryo Imai, Seng Pei Liew, Daichi Amagata, Tsubasa Takahashi, Takahiro Hara

Proc. of International Conference on Database Systems for Advanced Applications (DASFAA)　p. 377-389　2024/07　Research paper (international conference proceedings)

Introduction of the OpenPack Dataset and Lessons Learned from Organizing OpenPack Challenge 2022

Takuya Maekawa, Naoya Yoshimura, Jaime Morales, Takahiro Hara

International Journal of Activity and Behavior Computing　Vol. 2024　No. 2　p. 1-21　2024/06　Research paper (scientific journal)

Activity Prediction Method for Nursing Care Records with Missing Entries

Ryuichiro Okuda, Qingxin Xia, Takuya Maekawa, Takahiro Hara, Sozo Inoue

International Journal of Activity and Behavior Computing　Vol. 2024　No. 2　p. 1-17　2024/06　Research paper (scientific journal)

Preliminary Investigation of SSL for Complex Work Activity Recognition in Industrial Domain via MoIL

Qingxin Xia, Takuya Maekawa, Jaime Morales, Takahiro Hara, Hirotomo Oshima, Masamitsu Fukuda, Yasuo Namioka

2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops)　2024/03/11　Research paper (international conference proceedings)

OpenPack: A Large-Scale Dataset for Recognizing Packaging Works in IoT-Enabled Logistic Environments

Naoya Yoshimura, Jaime Morales, Takuya Maekawa, Takahiro Hara

2024 IEEE International Conference on Pervasive Computing and Communications (PerCom)　2024/03/11　Research paper (international conference proceedings)

Artifact: OpenPack: A Large-scale Dataset for Recognizing Packaging Works in Logistic Environments

Naoya Yoshimura, Jaime Morales, Takuya Maekawa, Takahiro Hara

2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops)　2024/03/11　Research paper (international conference proceedings)

Joint Knowledge Graph Approach for Event Participant Prediction with Social Media Retweeting

Yihong Zhang,Takahiro Hara

Knowledge and Information Systems　Vol. 66　No. 3　p. 2115-2133　2024/03　Research paper (scientific journal)

Preliminary Investigation of Activity Prediction in Nursing Homes using Activity History with Erroneous Time Stamps

Ryuichiro Okuda, Qingxin Xia, Takuya Maekawa, Takahiro Hara, Sozo Inoue

COMPANION OF THE 2024 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2024　p. 851-855　2024　Research paper (international conference proceedings)

Brief Introduction of the OpenPack Dataset and Lessons Learned from Organizing Activity Recognition Challenge Using the Dataset

Takuya Maekawa, Naoya Yoshimura, Jaime Morales, Takahiro Hara

COMPANION OF THE 2024 ACM INTERNATIONAL JOINT CONFERENCE ON PERVASIVE AND UBIQUITOUS COMPUTING, UBICOMP COMPANION 2024　p. 116-120　2024　Research paper (international conference proceedings)

Efficient Density-peaks Clustering Algorithms on Static and Dynamic Data in Euclidean Space

Daichi Amagata, Takahiro Hara

ACM Transactions on Knowledge Discovery from Data　Vol. 18　No. 1　p. 1-27　2024/01　Research paper (scientific journal)

Unvisited Out-Of-Town POI Recommendation with Simultaneous Learning of Multiple Regions

Rikuto Tsubouchi, Takahiro Hara, Kei Yonekawa, Shuichiro Haruta

2023 IEEE International Conference on Big Data (BigData)　p. 915-924　2023/12/15　Research paper (international conference proceedings)

A Graph-Based Recommendation Model Using Contrastive Learning for Inductive Scenario

Yuma Dose, Shuichiro Haruta, Takahiro Hara

Proc. of IEEE International Conference on Machine Learning and Applications　p. 174-181　2023/12　Research paper (international conference proceedings)

Multi-Modal Relational Side Information Graph Attention Networks for Recommender System

Shengzhe Jiao, Yihong Zhang, Takahiro Hara

Proc. of IEEE International Conference on Machine Learning and Applications　p. 1012-1017　2023/12　Research paper (international conference proceedings)

User-irrelevant Cross-domain Association Analysis for Cross-domain Recommendation with Transfer Learning

Hao Niu, Duc Nguyen, Kei Yonekawa, Mori Kurokawa, Chihiro Ono, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Proc. of ACM Workshop on Intelligent Cross-Data Analysis and Retrieval　p. 37-45　2023/08　Research paper (international conference proceedings)

Simpler is Much Faster: Fair and Independent Inner Product Search

Kazuyoshi Aoyama, Daichi Amagata, Sumio Fujita, Takahiro Hara

Proc. of International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2023)　p. 2379-2383　2023/07/18　Research paper (international conference proceedings)

Reverse Maximum Inner Product Search: Formulation, Algorithms, and Analysis

Daichi Amagata, Takahiro Hara

ACM Transactions on the Web　Vol. 17　No. 4　p. 1-13　2023/07/11　Research paper (scientific journal)

Real-time Integration of Social Media Background in Dynamic Recommendation Systems

Yihong Zhang, Xiu Susie Fang, Takahiro Hara

eCom@SIGIR　2023/07　Research paper (international conference proceedings)

Fast Algorithm for Embedded Order Dependency Validation

Daichi Amagata, Alejandro Ramos, Ryo Shirai, Takahiro Hara

Proc. of International Conference on Scientific and Statistical Database Management (SSDBM 2023)　2023/07　Research paper (international conference proceedings)

Approximate Reverse Top-k Spatial-Keyword Queries

Shunya Nishio, Daichi Amagata, Takahiro Hara

Proc. of IEEE International Conference on Mobile Data Management (MDM)　p. 96-105　2023/07　Research paper (international conference proceedings)

POI Recommendation by Learning Short-, Long- and Mid-Term Preferences through GNN

Yue Zhao, Yihong Zhang, Daichi Amagata, Takahiro Hara

Proc. of IEEE International Conference on Mobile Data Management (MDM)　p. 1-10　2023/07　Research paper (international conference proceedings)

Biased or Debiased: Polarization-aware Embedding Learning from Social Media Knowledge Graph

Yihong Zhang, Takahiro Hara, Lina Yao

Proc. of International Joint Conference on Neural Networks (IJCNN 2023)　2023/06/18　Research paper (international conference proceedings)

Semantic Relation Transfer for Non-overlapped Cross-domain Recommendations

Zhi Li, Daichi Amagata, Yihong Zhang, Takahiro Hara, Shuichiro Haruta, Kei Yonekawa, Mori Kurokawa

Proc. of Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2023)　p. 271-283　2023/05/27　Research paper (international conference proceedings)

Evolving Social Media Background Representation with Frequency Weights and Co-occurrence Graphs

Yihong Zhang, Xiu Susie Fang, Takahiro Hara

ACM Transactions on Knowledge Discovery from Data　Vol. 17　No. 7　p. 1-17　2023/04/14　Research paper (scientific journal)

Joint Estimation of the Distance and Relative Velocity of Obstacles via Smartphone Active Sound Sensing for Pedestrian Safety

Thilina Dissanayake, Takuya Maekawa, Takahiro Hara

Proc. of IEEE International Conference on Pervasive Computing and Communications (PerCom 2023)　2023/03　Research paper (international conference proceedings)

An Effective and Efficient Self-Attention Based Model for Next POI Recommendation

Qingxin Xia, Takahiro Hara, Takuya Maekawa, Mori Kurokawa, Kei Yonekawa

Proc. of Workshop on Ubiquitous and Multi-domain User Modeling (UMUM2023)　2023/03　Research paper (international conference proceedings)

Detecting Repetitive Human Actions by Neural Networks Trained on Composite Data Only

Yuuki Nishino, Takuya Maekawa, Takahiro Hara

Proc. of International Workshop on Behavior analysis and Recognition for Knowledge Discovery (BiRD 2023)　2023/03　Research paper (international conference proceedings)

Explainable Integration of Social Media Background in a Dynamic Neural Recommender

Yihong Zhang, Takahiro Hara

ACM Transactions on Knowledge Discovery from Data　Vol. 17　No. 3　p. 1-14　2023/02/22　Research paper (scientific journal)

Organized Event Participant Prediction Enhanced by Social Media Retweeting Data.

Yihong Zhang 0001, Takahiro Hara

WI/IAT　p. 243-248　2023　Research paper (international conference proceedings)

Unsupervised Human Activity Recognition through Two-stage Prompting with ChatGPT.

Qingxin Xia, Takuya Maekawa, Takahiro Hara

CoRR　Vol. abs/2306.02140　2023　Research paper (scientific journal)

Categorical Diversity-Aware Inner Product Search

Kohei Hirata, Daichi Amagata, Sumio Fujita, Takahiro Hara

IEEE Access　p. 1-1　2023/01　Research paper (scientific journal)

Generalized Durative Event Detection on Social Media

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Journal of Intelligent Information Systems　Vol. 60　No. 1　p. 73-95　2023/01　Research paper (scientific journal)

Retrieving Top-N Weighted Spatial k-cliques

Ryosuke Taniguchi, Daichi Amagata, Takahiro Hara

Proc. of IEEE International Conference on Big Data (BigData)　p. 4942-4951　2022/12　Research paper (international conference proceedings)

Debiasing Graph Transfer Learning via Item Semantic Clustering for Cross-Domain Recommendations

Zhi Li, Daichi Amagata, Yihong Zhang, Takahiro Hara, Shuichiro Haruta, Kei Yonekawa, Mori Kurokawa

Proc. of IEEE International Conference on Big Data (BigData)　p. 762-769　2022/12　Research paper (international conference proceedings)

Utilizing Social Media Retweeting for Improving Event Participant Prediction

Yihong Zhang, Takahiro Hara

Proc. of International Conference on Web Information Systems Engineering (WISE 2022)　p. 3-10　2022/11/07　Research paper (international conference proceedings)

HML4Rec: Hierarchical meta-learning for cold-start recommendation in flash sale e-commerce

Zhi Li, Daichi Amagata, Yihong Zhang, Takuya Maekawa, Takahiro Hara, Kei Yonekawa, Mori Kurokawa

Knowledge-Based Systems　Vol. 255　2022/11　Research paper (scientific journal)

Learned k-NN Distance Estimation

Daichi Amagata, Yusuke Arai, Sumio Fujita, Takahiro Hara

Proc. of International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2022)　2022/11　Research paper (international conference proceedings)

Cardinality Estimation in Inner Product Space

Kohei Hirata, Daichi Amagata, Takahiro Hara

IEEE Open Journal of the Computer Society　Vol. 3　p. 208-216　2022/10　Research paper (scientific journal)

A Low-Load Distributed Stream Processing System for Continuous Conjunctive Normal Form Queries

Tomoki Yoshihisa, Takahiro Hara

IEEE Transactions on Cloud Computing　Vol. 10　No. 4　p. 2281-2293　2022/10　Research paper (scientific journal)

Predicting Performance Improvement of Human Activity Recognition Model by Additional Data Collection

Kei Tanigaki, Tze Chuin Teoh, Naoya Yoshimura, Takuya Maekawa, Takahiro Hara

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies　Vol. 6　No. 3　2022/09　Research paper (scientific journal)

Diversity-Aware Maximum Inner Product Search Efficiently and Effectively

Kohei Hirata, Daichi Amagata, Sumio Fujita, Takahiro Hara

Proc. of ACM International Conference on Recommender Systems (RecSys 2022)　p. 198-207　2022/09　Research paper (international conference proceedings)

Twitter-aided Decision Making: A Review of Recent Developments

Yihong Zhang, Masumi Shirakawa, Yuanyuan Wang, Zhi Li, Takahiro Hara

Applied Intelligence　Vol. 52　No. 12　p. 13839-13854　2022/09　Research paper (scientific journal)

Predicting Temporary Deal Success with Social Media Timing Signals

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Journal of Intelligent Information Systems　Vol. 59　No. 1　p. 1-19　2022/08　Research paper (scientific journal)

Few-Shot and Weakly Supervised Repetition Counting With Body-Worn Accelerometers

Yuuki Nishino, Takuya Maekawa, Takahiro Hara

Frontiers in Computer Science　Vol. 4　2022/07/14　Research paper (scientific journal)

Acceleration-based Activity Recognition of Repetitive Works with Lightweight Ordered-work Segmentation Network

Naoya Yoshimura, Takuya Maekawa, Takahiro Hara, Atsushi Wada

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies　Vol. 6　No. 2　p. 1-39　2022/07/04　Research paper (scientific journal)

Cross-Domain Event Participant Prediction with Public Event Description

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Proc. of International Congress on Advanced Applied Informatics (IIAI-AAI 2022)　p. 33-38　2022/07　Research paper (international conference proceedings)

Trends-enhanced Attention & Memory Networks for E-commerce Recommendation

Zhi Li, Daichi Amagata, Takuya Maekawa, Kei Yonekawa, Mori Kurokawa, Takahiro Hara

Proc. of SIGIR Workshop On eCommerce (SIGIReCom 2022)　2022/07　Research paper (international conference proceedings)

Fast, Exact, and Parallel-friendly Outlier Detection Algorithms with Proximity Graph in Metric Spaces

Daichi Amagata, Makoto Onizuka, Takahiro Hara

The VLDB Journal　Vol. 31　No. 4　p. 797-821　2022/07　Research paper (scientific journal)

Efficient Retrieval of Top-k Weighted Triangles on Static and Dynamic Spatial Data

Ryosuke Taniguchi, Daichi Amagata, Takahiro Hara

IEEE Access　Vol. 10　p. 55298-55307　2022/05　Research paper (scientific journal)

Effcient Retrieval of Top-k Weighted Spatial Triangles

Ryosuke Taniguchi, Daichi Amagata, Takahiro Hara

Proc. of International Conference on Database Systems for Advanced Applications (DASFAA)　p. 224-231　2022/04

A Performance Study of One-dimensional Learned Cardinality Estimation

Yuchen Ji, Daichi Amagata, Yuya Sasaki, Takahiro Hara

Proc. of International Workshop on Design, Optimization, Languages and Analytical Processing of Big Data (DOLAP 2022)　p. 86-90　2022/03　Research paper (international conference proceedings)

IndoLabel: Predicting Indoor Location Class by Discovering Location-specific Sensor Data Motifs

Thilina Dissanayake, Takuya Maekawa, Takahiro Hara, Taiki Miyanishi, Motoaki Kawanabe

IEEE Sensors Journal　Vol. 22　No. 6　p. 5372-5385　2022/03　Research paper (scientific journal)

Approximate Top-k Inner Product Join with a Proximity Graph

Hayato Nakama, Daichi Amagata, Takahiro Hara

Proc. of 2021 IEEE International Conference on Big Data (Big Data)　p. 4468-4471　2021/12/15　Research paper (international conference proceedings)

Concept Drift Detection with Denoising Autoencoder in Incomplete Data

Jun Murao, Kei Yonekawa, Mori Kurokawa, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Proc. of International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous 2021 Workshop)　p. 541-552　2021/11　Research paper (international conference proceedings)

Wi-Fi CSI-Based Activity Recognition with Adaptive Sampling Rate Selection

Yuka Tanno, Takuya Maekawa, Takahiro Hara

Proc. of International Conference on Mobile and Ubiquitous Systems: Computing, Networking and Services (MobiQuitous 2021)　p. 507-512　2021/11　Research paper (international conference proceedings)

Feat-SKSJ: Fast and Exact Algorithm for Top-k Spatial-Keyword Similarity Join

Daichi Amagata, Shohei Tsuruoka, Yusuke Arai, Takahiro Hara

Proc. of International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2021)　p. 15-24　2021/11　Research paper (international conference proceedings)

Predicting Next-use Mobile Apps Using App Semantic Representations

Cheng Chen, Takuya Maekawa, Daichi Amagata, Takahiro Hara

Journal of Information Processing　Vol. 29　p. 597-609　2021/10　Research paper (scientific journal)

Dealing with Noise in Crowdsourced GPS Human Trajectory Logging Data

Kiki Adhinugraha, Wenny Rahayu, Takahiro Hara, David Tania

Concurrency and Computation: Practice and Experience　Vol. 33　No. 19　2021/10　Research paper (scientific journal)

WeakCounter: Acceleration-based Repetition Counting of Actions with Weakly Supervised Learning

Yuuki Nishino, Takuya Maekawa, Takahiro Hara

Proc. of International Symposium on Wearable Computers (ISWC'21)　p. 256-263　2021/09/21　Research paper (international conference proceedings)

Cross-species Behavior Analysis with Attention-based Domain-adversarial Deep Neural Networks

Takuya Maekawa, Daiki Higashide, Takahiro Hara, Kentarou Matsumura, Kaoru Ide, Takahisa Miyatake, Koutarou D Kimura, Susumu Takahashi

Nature communications　Vol. 12　No. 1　p. 5519-5519　2021/09/17　Research paper (scientific journal)

Reverse Maximum Inner Product Search: How to Efficiently Find Users Who Would Like to Buy My Item?

Daichi Amagata, Takahiro Hara

Proc. of ACM International Conference on Recommender Systems (RecSys 2021)　p. 273-281　2021/09　Research paper (international conference proceedings)

LGTM: A Fast and Accurate kNN Search Algorithm in High-dimensional Spaces

Yusuke Arai, Daichi Amagata, Sumio Fujita, Takahiro Hara

Proc. of International Conference on Database and Expert Systems Applications (DEXA 2021)　2021/09　Research paper (international conference proceedings)

A General Method for Event Detection on Social Media

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Proc. of European Conference on Advances in Databases and Information Systems (ADBIS 2021)　p. 43-56　2021/08　Research paper (international conference proceedings)

An Automatic Method for Understanding Political Polarization through Social Media

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Proc. of International Conference on Knowledge Science, Engineering and Management (KSEM 2021)　2021/08　Research paper (international conference proceedings)

Toward Understanding Acceleration-based Activity Recognition Neural Networks with Activation Maximization

Naoya Yoshimura, Takuya Maekawa, Takahiro Hara

Proc. of International Joint Conference on Neural Networks (IJCNN 2021)　2021/07　Research paper (international conference proceedings)

Using Social Media Background to Improve Cold-start Recommendation Deep Models

Yihong Zhang, Takuya Maekawa, Takahiro Hara

Proc. of International Joint Conference on Neural Networks (IJCNN 2021)　2021/07　Research paper (international conference proceedings)

Automatic identification of differences in behavioral co-occurrence between groups

Yiming Tian, Takuya Maekawa, Joseph Korpela, Daichi Amagata, Takahiro Hara, Sakiko Matsumoto, Ken Yoda

ANIMAL BIOTELEMETRY　Vol. 9　No. 1　2021/06　Research paper (scientific journal)

Fast Density-Peaks Clustering: Multicore-based Parallelization Approach

Daichi Amagata, Takahiro Hara

Proc. of ACM SIG International Conference on Management of Data (SIGMOD 2021)　p. 49-61　2021/06　Research paper (international conference proceedings)

Fast and Exact Outlier Detection in Metric Spaces: A Proximity Graph-based Approach

Daichi Amagata, Makoto Onizuka, Takahiro Hara

Proc. of ACM SIG International Conference on Management of Data (SIGMOD 2021)　p. 36-48　2021/06　Research paper (international conference proceedings)

Predicting E-commerce Item Sales With Web Environment Temporal Background

Yihong Zhang, Takahiro Hara

Proc. of International Conference on Business Information Systems (BIS 2021)　p. 233-243　2021/06　Research paper (international conference proceedings)

行動認識ニューラルネットワークによる特徴抽出の可視化と転移学習への応用

吉村 直也, 前川 卓也, 原 隆浩

情報処理学会論文誌　Vol. 62　No. 5　p. 1307-1316　2021/05　Research paper (scientific journal)

Backup Gateways for IoT Mesh Network using Order-K Hops Voronoi Diagram

Kiki Adhinugraha, Wenny Rahayu, Takahiro Hara, David Taniar

World Wide Web　Vol. 24　No. 3　p. 955-970　2021/05　Research paper (scientific journal)

高次元データに対するグラフインデックスを用いた近似範囲検索アルゴリズム

新井 悠介, 天方 大地, 原 隆浩, 藤田 澄男

情報処理学会論文誌　Vol. 62　No. 4　p. 1086-1098　2021/04　Research paper (scientific journal)

NaviMine: A Tool for Mining Trajectories through Behavior Prediction

Yiming Tian, Takuya Maekawa, Takahiro Hara, Yojiro Yokomori, Takashi Kitagawa

Proc. of 2021 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops 2021)　p. 502-507　2021/03　Research paper (international conference proceedings)

Using Social Media Background to Improve Cold-Start Recommendation Deep Models.

Yihong Zhang 0001, Takuya Maekawa, Takahiro Hara

International Joint Conference on Neural Networks(IJCNN)　p. 1-8　2021　Research paper (international conference proceedings)

A Probabilistic Model for Predicting E-commerce Purchases from Emerging Local and Social Interests

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Proc. of IEEE/WIC/ACM International Joint Conference on Web Intelligence and Intelligent Agent Technology (WI-IAT)　p. 345-350　2020/12　Research paper (international conference proceedings)

Smartphone-assisted Automatic Indoor Localization of BLE-enabled Appliances Using BLE and GNSS Signals

Masayuki Fujiwara, Tomoya Nakatani, Yiming Tian, Joseph Korpela, Takuya Maekawa, Takahiro Hara

Proc. of ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation　p. 80-89　2020/11　Research paper (international conference proceedings)

Distributed Spatial-Keyword kNN Monitoring for Location-aware Pub/Sub

Shohei Tsuruoka, Daichi Amagata, Shunya Nishio, Takahiro Hara

Proc. of International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2020)　2020/11　Research paper (international conference proceedings)

Detecting Energy Depriving Malicious Nodes by Unsupervised Learning in Energy Harvesting Cooperative Wireless Sensor Networks

Boqi Gao, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Journal of Information Processing　Vol. 28　p. 689-698　2020/10　Research paper (scientific journal)

User-centred Design of a Scenario-based Serious Game: Game-based Teaching of Future Healthcare

Renee Schulz, Berglind, Smaradottir, Andreas Prinz, Takahiro Hara

IEEE Transactions on Games　Vol. 12　No. 4　p. 376-385　2020/10　Research paper (scientific journal)

Cooperative Signaling and Directed Migration of Bio-nanomachines in Mobile Molecular Communication

Shinya Ishiyama, Tadashi Nakano, Yutaka Okaie, Takahiro Hara, Kaname Harumoto

Proc. of ACM International Conference on Nanoscale Computing and Communication (ACM NanoCom 2020)　2020/09　Research paper (international conference proceedings)

On the Transferability of Deep Neural Networks for Recommender System

Duc Nguyen, Hao Niu, Kei Yonekawa, Mori Kurokawa, Chihiro Ono, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Proc. of International Workshop on Interactive Adaptive Learning (IAL2020)　2020/09　Research paper (international conference proceedings)

Monitoring Motif on Multi-dimensional Streaming Time-series

Shinya Kato, Daichi Amagata, Takahiro Hara

Journal of the Information Processing Society of Japan　Vol. 61　No. 9　p. 1567-1576　2020/09　Research paper (scientific journal)

A DNN-Based Cross-Domain Recommender System for Alleviating Cold-Start Problem in E-Commerce

Hanxin Wang, Daichi Amagata, Takuya Makeawa, Takahiro Hara, Niu Hao, Kei Yonekawa, Mori Kurokawa

IEEE Open Journal of the Industrial Electronics Society　Vol. 1　p. 194-206　2020/07　Research paper (scientific journal)

Discovering Social Media Timing Signals for Predicting Temporary Deal Success

Yihong Zhang, Masumi Shirakawa, Takahiro Hara

Proc. of European Conference on Information Systems (ECIS 2020)　2020/06　Research paper (international conference proceedings)

On Internet-of-Things (IoT) Gateway Coverage Expansion

Kiki Adhinugraha, Wenny Rahayu, Takahiro Hara, David Taniar

Future Generation Computer Systems　Vol. 107　p. 578-587　2020/06　Research paper (scientific journal)

Detecting Reinforcement Learning-based Grey Hole Attack in Mobile Wireless Sensor Networks

Boqi Gao, Takuya Maekawa, Daichi Amagata, Takahiro Hara

IEICE Transactions on Communications　Vol. E103.B　No. 5　p. 504-516　2020/05　Research paper (scientific journal)

Network Formation Model of Bio-nanomachines Based on Directed Migration and Adhesion

Kazuki Yonekura, Tadashi Nakano, Yutaka Okaie, Takahiro Hara, Kaname Harumoto

Proc. of IEEE Wireless Communications and Networking Conference (WCNC 2020)　2020/04　Research paper (international conference proceedings)

A Cross Web Media Investigation on Trend Entities

Vol. 18-J　2020/04　Research paper (scientific journal)

Trends Tracking Memory Recommender Networks for Product Recommendations in E-Commerce

Zhi Li, Boqi Gao, Daichi Amagata, Takuya Maekawa, Takahiro Hara, Hao Niu, Kei Yonekawa, Mori Kurokawa

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

近接グラフを用いたメトリック空間における効率的な近似範囲検索アルゴリズム

新井 悠介, 天方 大地, 原 隆浩, 藤田 澄男

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

位置・キーワードに基づくkNNデータモニタリングのための分散アルゴリズム

鶴岡 翔平, 西尾 俊哉, 天方 大地, 原 隆浩

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

メトリック空間におけるDensity Peaks Clusteringに対する木構造を用いた効率的なアルゴリズム

中谷 諒平, 天方 大地, 原 隆浩

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

位置およびキーワードに基づく近似逆Top-k検索のためのバッチ処理アルゴリズム

西尾 俊哉, 天方 大地, 原 隆浩

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

メトリック空間における近接グラフを用いた高速アウトライアー検出

天方 大地, 原 隆浩

第12回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2020）　2020/03　Research paper (conference, symposium, etc.)

Multi-model Z-compression for High Speed Data Streaming and Low-power Wireless sensor Networks

Xiaofei Cao, Sanjay Madria, Takahiro Hara

Distributed and Parallel Databases　Vol. 38　p. 153-191　2020/03　Research paper (scientific journal)

ストリーミング時系列データに対するディスコードモニタリング

加藤 慎也, 天方 大地, 西尾 俊哉, 原 隆浩

情報処理学会論文誌　Vol. 61　No. 2　2020/02　Research paper (scientific journal)

Preliminary Investigation of Unsupervised Segmentation for Animal Locomotion Data using Deep Learning

TSUJIMOTO Hiroki, TAKEUCHI Koh, KISHINO Yasue, SUZUKI Hirokazu, YODA Ken, KIMURA Koutarou D., MAEKAWA Takuya, HARA Takahiro

Proceedings of the Annual Conference of JSAI　Vol. 2020　No. 0　p. 2C4OS7a02-2C4OS7a02　2020

A Probabilistic Model for Malicious User and Rumor Detection on Social Media

Yihong Zhang, Takahiro Hara

Proc. of Hawaii International Conference on System Sciences (HICSS 2020)　2020/01　Research paper (international conference proceedings)

Resource Assignment for Real-time Streaming in Edge Node-assisted Transmitting

Wei Zhao, Lianwei Zhu, Zhi Liu, Xuangou Wu, Xiujun Wang, Ruilin Pan, Takahiro Hara

Proc. of IEEE Globecom 2019 Workshop on Advances in AI and Big Data for IoT　2019/12　Research paper (international conference proceedings)

Dummy-based Location Anonymization for Controlling Observable User Preferences

Takahiro Hara

Proc. of IEEE Global Communications Conference　2019/12　Research paper (international conference proceedings)

Preliminary Investigation of Visualizing Human Activity Recognition Neural Network

Naoya Yoshimura, Takuya Maekawa, Takahiro Hara

2019 12th International Conference on Mobile Computing and Ubiquitous Network, ICMU 2019　2019/11/01　Research paper (international conference proceedings)

Detecting Energy Depriving Malicious Nodes by Unsupervised Learning in Energy Harvesting Cooperative Wireless Sensor Networks

高 博奇, 天方 大地, 前川 卓也, 原 隆浩

マルチメディア通信と分散処理ワークショップ (DPSWS 2019)　p. 97-104　2019/11　Research paper (conference, symposium, etc.)

位置およびキーワードに基づく近似逆k最近傍検索

西尾 俊哉, 天方 大地, 原 隆浩

マルチメディア通信と分散処理ワークショップ (DPSWS 2019)　p. 118-124　2019/11　Research paper (conference, symposium, etc.)

多次元ストリーミング時系列データの効率的なモチーフモニタリングアルゴリズム

加藤 慎也, 天方 大地, 原 隆浩

マルチメディア通信と分散処理ワークショップ (DPSWS 2019)　p. 125-132　2019/11　Research paper (conference, symposium, etc.)

Random Cell Motion Enhances the Capacity of Cell-cell Communication

Tadashi Nakano, Lin Lin, Yutaka Okaie, Cong Wu, Hao Yan, Takahiro Hara, Kaname Harumoto

IEEE Transactions on Molecular, Biological, and Multi-Scale Communications　Vol. 5　No. 2　p. 158-162　2019/11　Research paper (scientific journal)

Pub/Sub環境におけるkNNデータモニタリングの分散処理のためのクエリ割り当てアルゴリズム

鶴岡 翔平, 西尾 俊哉, 天方 大地, 原 隆浩

情報処理学会論文誌データベース（IPSJ-TOD）　Vol. 12　No. 4　p. 53-65　2019/10　Research paper (scientific journal)

Data-driven Simulation of Epidemic Information Dissemination in Mobile Molecular Communication

Shinya Ishiyama, Tadashi Nakano, Yutaka Okaie, Takahiro Hara, Kaname Harumoto

Proceedings of the Sixth Annual ACM International Conference on Nanoscale Computing and Communication (NANOCOM '19)　2019/09　Research paper (international conference proceedings)

Towards a Game-Design Framework for Evidence-Based Clinical Procedure Libraries

Renee Schulz, Santiago Martinez, Takahiro Hara

Proc. of IEEE International Conference on Serious Games and Applications for Health (SeGAH 2019)　2019/08　Research paper (international conference proceedings)

Correlation Set Discovery on Time-Series Data

Daichi Amagata, Takahiro Hara

Proc. of International Conference on Database and Expert Systems Applications (DEXA 2019)　p. 275-290　2019/08　Research paper (international conference proceedings)

Discord Monitoring for Streaming Time-Series

Shinya Kato, Daichi Amagata, Shunya Nishio, Takahiro Hara

Proc. of International Conference on Database and Expert Systems Applications (DEXA 2019)　p. 79-94　2019/08　Research paper (international conference proceedings)

行動認識モデルの転移学習に向けたニューラルネットワークによる特徴抽出の可視化と分析

吉村 直也, 前川 卓也, 原 隆浩

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2019)シンポジウム論文集　2019/07　Research paper (conference, symposium, etc.)

Preliminary Investigation on Recognizing Environment‐dependent Human Actions using a Fusion of Wi‐Fi Based Place Clustering and Motif Detection from Accelerometer Data

Thilina Dissanayake, Takuya Maekawa, Takahiro Hara

情報処理学会 マルチメディア, 分散, 協調とモバイル(DICOMO2019)シンポジウム論文集　Vol. 1　No. 4C-2　2019/07　Research paper (conference, symposium, etc.)

Motif Monitoring for Streaming Time-Series

加藤 慎也, 天方 大地, 西尾 俊哉, 原 隆浩

Vol. 60　No. 7　p. 1260-1269　2019/07　Research paper (scientific journal)

Preliminary Investigation of Alleviating User Cold-Start Problem in E-commerce with Deep Cross-Domain Recommender System.

Hanxin Wang, Daichi Amagata, Takuya Maekawa, Takahiro Hara, Hao Niu, Kei Yonekawa, Mori Kurokawa

Companion of The 2019 World Wide Web Conference, WWW 2019　p. 398-403　2019/05　Research paper (international conference proceedings)

Behavior Matching between Different Domains based on Canonical Correlation Analysis.

Yuan Lyu, Daichi Amagata, Takuya Maekawa, Takahiro Hara, Hao Niu, Kei Yonekawa, Mori Kurokawa

Companion of The 2019 World Wide Web Conference, WWW 2019　p. 361-366　2019/05　Research paper (international conference proceedings)

Efficient framework for processing top-k queries with replication in mobile ad hoc networks

Yuya Sasaki, Takahiro Hara, Yoshiharu Ishikawa

GeoInformatica　Vol. 23　No. 4　p. 591-620　2019/05　Research paper (scientific journal)

A Heterogeneous Domain Adversarial Neural Network for Trans-Domain Behavioral Targeting

Kei Yonekawa, Hao Niu, Mori Kurokawa, Arei Kobayashi, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Proc. of Pacific-Asia Conference on Knowledge Discovery and Data Mining (Workshops)　p. 274-285　2019/04　Research paper (international conference proceedings)

Estimating User Contexts from Mobile Application Usage Histories.

Toshimitsu Kamiya, Tatsuya Nakamura, Takuya Maekawa, Daichi Amagata, Takahiro Hara

IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2019　p. 765-770　2019/03　Research paper (international conference proceedings)

Preliminary Investigation of Predicting Next-Use Mobile Apps Using App Semantic Representations.

Cheng Chen, Takuya Maekawa, Daichi Amagata, Takahiro Hara

IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2019　p. 391-394　2019/03　Research paper (international conference proceedings)

マルチモーダル移動行動データからの高速な頻出共起ルール抽出手法

田一鳴, 前川卓也, 天方大地, 原隆浩, 松本祥子, 依田憲, 藤岡慧明, 濱井郁弥, 福井大, 飛龍志津子

情報処理学会論文誌　Vol. 60　p. 859-869　2019/03　Research paper (scientific journal)

Robust Malicious Node Detection with Ensemble Learning in MANETs

GAO Boqi, 前川卓也, 天方大地, 原隆浩

情報処理学会論文誌　Vol. 60　No. 2　p. 501-513　2019/02/15　Research paper (scientific journal)

Advertiser-Assisted Behavioral Ad-Targeting via Denoised Distribution Induction.

Kei Yonekawa, Hao Niu, Mori Kurokawa, Arei Kobayashi, Daichi Amagata, Takuya Maekawa, Takahiro Hara

2019 IEEE International Conference on Big Data (IEEE BigData)　p. 5611-5619　2019　Research paper (international conference proceedings)

ユーザの移動を考慮したキーワード付き空間データに対するTop-k問合せのためのストリーミングアルゴリズム

西尾 俊哉, 天方 大地, 原 隆浩

電子情報通信学会論文誌D　Vol. J102-D　No. 1　p. 1-12　2019/01　Research paper (scientific journal)

Edge-node Assisted Live Video Streaming: A Coalition Formation Game Approach

Wei Zhao, Wen Qiu, Chuanhua Zhou, Zhi Liu, Takahiro Hara

Proc. of IEEE Globecom 2018 Workshop: Collaborative Intelligence for Big Data　2018/12　Research paper (international conference proceedings)

Epidemic Information Dissemination in Mobile Molecular Communication Systems

Shinya Ishiyama, Tadashi Nakano, Yutaka Okaie, Takahiro Hara

Proc. of IEEE Global Communications Conference (Globecom 2018), Selected Areas in Communications Symposium - Molecular, Biological and Multi-scale Communications　2018/12　Research paper (international conference proceedings)

Leader-Follower-Amplifier Based Mobile Molecular Communication Systems for Cooperative Drug Delivery

Yutaka Okaie, Shinya Ishiyama, Takahiro Hara

Proc. of IEEE Global Communications Conference (Globecom 2018), Selected Areas in Communications Symposium - Molecular, Biological and Multi-scale Communications　2018/12　Research paper (international conference proceedings)

Virtual Touch-Point: Trans-Domain Behavioral Targeting via Transfer Learning.

Mori Kurokawa, Hao Niu, Kei Yonekawa, Arei Kobayashi, Daichi Amagata, Takuya Maekawa, Takahiro Hara

Proc. of IEEE International Big Data Transfer Learning Workshop　p. 4762-4767　2018/12　Research paper (international conference proceedings)

Developing a Competency-based System to Enhance Knowledge Management Program

Yujia Wang, Chalermpon Kongjit, Takahiro Hara, Daichi Amagata

p. 185-190　2018/09　Research paper (international conference proceedings)

Monitoring Range Motif on Streaming Time-Series

Shinya Kato, Daichi Amagata, Shunya Nishio, Takahiro Hara

Proc. of International Conference on Database and Expert Systems Applications (DEXA 2018)　p. 251-266　2018/09　Research paper (international conference proceedings)

Space Filling Approach for Distributed Processing of Top-k Dominating Queries

IEEE Transactions on Knowledge and Data Engineering (TKDE)　Vol. 30　No. 6　p. 1150-1163　2018/08　Research paper (scientific journal)

Usability and Procedure Learnability of Evidence-based Interactive Clinical Systems: Roadmap for a Norwegian-Japanese Research Fellowship

Renee Schulz, Santiago Martinez, Takahiro Hara

Proc. of The Scandinavian Conference on Health Informatics (SHI 2018)　2018/08　Research paper (international conference proceedings)

再帰型ニューラルネットワークによるアプリケーションの利用履歴を用いたユーザのコンテキスト推定モデルの構築

神谷 俊充, 中村 達哉, 前川 卓也, 天方 大地, 原 隆浩

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2018)シンポジウム論文集　p. 1244-1251　2018/07　Research paper (conference, symposium, etc.)

ストリーミング時系列データの効率的なモチーフモニタリングアルゴリズム

加藤 慎也, 天方 大地, 西尾 俊哉, 原 隆浩

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2018)シンポジウム論文集　2018/07　Research paper (conference, symposium, etc.)

A Social Sensor Visualization System for a Platform to Generate and Share Social Sensor Data

Zennosuke Aiko, Keisuke Nakashima, Tomoki Yoshihisa, Takahiro Hara

Proceedings of the IEEE International Conference on Computers, Software & Applications　p. 628-633　2018/07　Research paper (international conference proceedings)

Comparison Study On UAV Movement for Adapting to Multimedia Burst in Post-Disaster Networks

Wei Zhao, Wenfei Xin, Xiao Zheng, Takahiro Hara

Proc. of IEEE International Conference on Smart Computing (SMARTCOMP 2018)　p. 339-343　2018/06　Research paper (international conference proceedings)

Efficient Periodical Boundary Detection Through Boundary Crossing Record and Sensor Data Overhearing in Dense MWSNs

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara

Pervasive and Mobile Computing　Vol. 49　p. 45-61　2018/06　Research paper (scientific journal)

Top-k Query Processing with Replication Strategy in Mobile Ad Hoc Networks

Yuya Sasaki, Takahiro Hara, Yoshiharu Ishikawa

Proc. of IEEE International Conference on Mobile Data Management (MDM 2018)　2018/06　Research paper (international conference proceedings)

Mining Top-k Co-Occurrence Patterns across Multiple Streams (Extended abstract)

Daichi Amagata, Takahiro Hara

Proc. of IEEE International Conference on Data Engineering (ICDE 2018)　p. 1747-1748　2018/04　Research paper (international conference proceedings)

Dummy Generation Based on User-Movement Estimation for Location Privacy Protection

Shuhei Hayashida, Daichi Amagata, Takahiro Hara, Xing Xie

IEEE Access　Vol. 6　p. 22958-22969　2018/04　Research paper (scientific journal)

動物移動行動データからの高速な頻出共起ルール抽出に関する検討

田 一鳴, 前川 卓也, 天方 大地, 原 隆浩, 松本 祥子, 依田 憲, 藤岡 慧明, 濱井 郁弥, 福井 大, 飛龍 志津子

第10回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2018）　2018/03　Research paper (conference, symposium, etc.)

位置・キーワードに基づくムービングTop-kパブリッシュ/サブスクライブ

西尾 俊哉, 天方 大地, 原 隆浩

第10回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2018）　2018/03　Research paper (conference, symposium, etc.)

Preliminary Investigation of Co-Occurrence Rule Extraction from Multi-Modal Animal Locomotion Data

田 一鳴, 前川 卓也, 天方 大地, 原 隆浩, 松本 祥子, 依田 憲, 藤岡 慧明, 濱井 郁弥, 福井 大, 飛龍 志津子

情報処理学会第80回全国大会　2018/03　Research paper (conference, symposium, etc.)

位置情報サービス利用におけるダミーを用いたユーザ位置曖昧化手法の視認性評価

林田 秀平, 天方 大地, 原 隆浩, Xing Xie

第10回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2018）　2018/03　Research paper (conference, symposium, etc.)

Preliminary Investigation of Detecting Events of Indoor Objects with Smartphone Active Sound Sensing.

Thilina Dissanayake, Takuya Maekawa, Daichi Amagata, Takahiro Hara

2018 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2018　p. 500-503　2018/03　Research paper (international conference proceedings)

Preliminary Investigation of Fine-Grained Gesture Recognition With Signal Super-Resolution.

Naoya Yoshimura, Takuya Maekawa, Daichi Amagata, Takahiro Hara

2018 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom Workshops 2018　p. 484-487　2018/03　Research paper (international conference proceedings)

社会センサデータ生成・共有基盤におけるストリーミングデータ処理機構

中嶋 奎介, 横山 正浩, 義久 智樹, 原 隆浩

情報処理学会第80回全国大会論文集　2018/03　Research paper (other academic)

Predicting the Occurrence of Life Events from User's Tweet History

Shun Abe, Masumi Shirakawa, Tatsuya Nakamura, Takahiro Hara, Kazushi Ikeda, Keiichiro Hoashi

Proc. of IEEE International Conference on Semantic Computing (ICSC2018)　2018/02　Research paper (international conference proceedings)

アクティブサウンドセンシングを用いた屋内日常物のイベント検知に関する検討

Thilina Dissanayake, 前川 卓也, 天方 大地, 原 隆浩

情報処理学会研究報告(ユビキタスコンピューティングシステム研究会)　Vol. 2018-UBI-57　No. 18　p. 1-9　2018/02　Research paper (other academic)

仮想化を利用した設備機器の状態監視における計測時刻誤差の推定手法

金子 雄, 伊藤 俊夫, 原 隆浩

情報処理学会論文誌　Vol. 59　No. 2　p. 362-371　2018/02　Research paper (scientific journal)

Modeling and simulation experiments of trail network formation by non-diffusion-based mobile molecular communication networks

Yutaka Okaie, Tadashi Nakano, Takuya Obuchi, Takahiro Hara

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC　Vol. 2017-　p. 1-5　2017/12/19　Research paper (international conference proceedings)

Mining Top-k Co-Occurrence Patterns across Multiple Streams

Daichi Amagata, Takahiro Hara

IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING　Vol. 29　No. 10　p. 2249-2262　2017/10　Research paper (scientific journal)

相関時系列データ集合の計算のための高速アルゴリズム

天方 大地, 原 隆浩

FIT2017 第16回情報科学技術フォーラム　p. 9-16　2017/09　Research paper (conference, symposium, etc.)

社会センサデータ生成・共有生成基盤における社会センサ可視化機構

中嶋 奎介, 横山 正浩, 義久 智樹, 原 隆浩

情報処理学会研究報告(データベースシステム研究会)　Vol. 2017-DBS-165　No. 3　p. 1-6　2017/09　Research paper (other academic)

モバイルセンサデータストリーム環境における継続的なTop-k検索結果の多様化について

横山 正浩, 原 隆浩, Sanjay Kumar Madria

電子情報通信学会研究報告 (データ工学研究会 DE2017-14)　Vol. 117　No. 212　p. 7-12　2017/09　Research paper (other academic)

Investigation on Dynamics of Group Decision Making with Collaborative Web Search

Tatsuya Nakamura, Tomu Tominaga, Miki Watanabe, Nattapong Thammasan, Kenji Urai, Yutaka Nakamura, Kazufumi Hosoda, Takahiro Hara, Yoshinori Hijikata

Proc. of IEEE/WIC/ACM International Conference on Web Intelligence (WI 2017)　2017/08　Research paper (international conference proceedings)

Probabilistic Maxrs Queries on Uncertain Data

Yuki Nakayama, Daichi Amagata, Takahiro Hara

International Conference on Database and Expert Systems Applications (DEXA)　p. 111-119　2017/08　Research paper (other academic)

Efficient cluster-based top-k query routing with data replication in MANETs

Daichi Amagata, Takahiro Hara, Yuya Sasaki, Shojiro Nishio

SOFT COMPUTING　Vol. 21　No. 15　p. 4161-4178　2017/08　Research paper (scientific journal)

ユーザの移動先候補の推定に基づく逐次的なダミー生成による位置曖昧化手法

林田 秀平, 天方 大地, 原 隆浩, Xing Xie

情報処理学会マルチメディア, 分散, 協調とモバイル(DICOMO2017)シンポジウム論文集　2017/07

A WSN Testbed for Z-Order Encoding Based Multi-Modal Sensor Data Compression

Xiaofei Cao, Sanjay Madria, Takahiro Hara

2017 14th Annual IEEE International Conference on Sensing, Communication, and Networking, SECON 2017　2017/06/30　Research paper (international conference proceedings)

Geo-social Keyword Top-k Data Monitoring

西尾 俊哉, 天方 大地, 原 隆浩

情報処理学会論文誌データベース（TOD）　Vol. 10　No. 2　p. 8-18　2017/06

ユーザのツイート履歴に含まれる単語の出現傾向を用いた ライフイベント予測モデルの構築

阿部 隼, 白川 真澄, 原 隆浩, 池田 和史, 帆足 啓一郎

ソーシャルコンピューティングシンポジウム(SoC2017)論文集　2017/06　Research paper (other academic)

Efficient Z-order Encoding Based Multi-model Data Compression in WSNs

Xiaofei Cao, Sanjay Madria, Takahiro Hara

Proc. of IEEE International Conference on Distributed Computing Systems (IEEE ICDCS 2017)　2017/06　Research paper (international conference proceedings)

位置・ソーシャル関係・キーワードに基づくTop-kデータモニタリング

西尾 俊哉, 天方 大地, 原 隆浩

情報処理学会論文誌データベース（IPSJ-TOD）　Vol. 10　No. 2　p. 1-11　2017/06　Research paper (scientific journal)

Data Management Issues in Mobile Ad Hoc Networks

Takahiro Hara

Proceedings of the Japan Academy, Series B　2017/05　Research paper (scientific journal)

IoT環境における処理削減によるストリーミング処理時間短縮手法

義久 智樹, 原 隆浩

情報処理学会論文誌　2017/04　Research paper (scientific journal)

複数ストリーム環境におけるTop-k共起パターンマイニング

天方 大地, 原 隆浩

第9回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2017）　2017/03　Research paper (conference, symposium, etc.)

モバイルアドホックネットワークにおける機械学習を用いた攻撃端末特定手法

高 博奇, 前川 卓也, 天方 大地, 原 隆浩

第9回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2017）　2017/03　Research paper (conference, symposium, etc.)

スライディングウィンドウ上での位置・キーワード・ソーシャル関係に基づくTop-kパブリッシュ/サブスクライブ

西尾 俊哉, 天方 大地, 原 隆浩

第9回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2017）　2017/03　Research paper (conference, symposium, etc.)

不確実データベースにおけるMaxRSクエリ処理手法

中山 侑紀, 天方 大地, 原 隆浩

第9回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2017）　2017/03　Research paper (conference, symposium, etc.)

A System to Retrieve Photographs Showing Designated Points

Yuki Taniyama, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Proc. of IEEE International Conference on Advanced Information Networking and Applications (AINA 2017)　2017/03　Research paper (international conference proceedings)

距離・キーワード・ソーシャル関係に基づくスカイライン検索

田口 直弥, 天方 大地, 原 隆浩, 西尾 章治郎

日本データベース学会和文論文誌　2017/03　Research paper (scientific journal)

モバイルセンサデータベースにおける階層的クラスタリングを用いたTop-k検索結果の多様化について

横山 正浩, 原 隆浩

データ工学と情報マネジメントに関するフォーラム (DEIM 2017)論文集　2017/03　Research paper (other academic)

高度なコンテキスト情報を活用したユーザの利用アプリケーションの推定

川上 慶士, 原 隆浩, 前川 卓也, 石塚 宏紀, Xing Xie

データ工学と情報マネジメントに関するフォーラム(DEIM 2017)論文集　2017/03　Research paper (other academic)

アドホックネットワークにおける2フェーズMaxRS検索手法

中山 侑紀, 天方 大地, 原 隆浩, 西尾 章治郎

日本データベース学会和文論文誌　Vol. 15　No. 8　2017/03　Research paper (scientific journal)

Subscription-based Data Aggregation Techniques for Top-k Monitoring Queries

Kamalas Udomlamlert, Takahiro Hara, Shojiro Nishio

World Wide Web　2017/03　Research paper (scientific journal)

ビル設備機器の状態監視における仮想化技術の適用可能性の検討

金子 雄, 伊藤 俊夫, 原 隆浩

情報処理学会論文誌　2017/02　Research paper (scientific journal)

モバイルセンサデータベースにおける効率的なTop-k検索結果の多様化手法

横山 正浩, 原 隆浩

情報処理学会論文誌　2017/02　Research paper (scientific journal)

Performance Evaluation of Leader-follower-based Mobile Molecular Communication Networks for Target Detection Applications

Tadashi Nakano, Yutaka Okaie, Shouhei Kobayashi, Takako Koujin, Chen-Hao Chan, Yu-Hsiang Hsu, Takuya Obuchi, Takahiro Hara, Yasushi Hiraoka, Tokuko Haraguchi

IEEE Transactions on Communications　2017/02　Research paper (scientific journal)

A sensor data aggregation system using mobile agents

Tomoki Yoshihisa, Yuto Hamaguchi, Yoshimasa Ishi, Yuuichi Teranishi, Takahiro Hara, Shojiro Nishio

Distributed Networks: Intelligence, Security, and Applications　p. 39-65　2017/01/01　Part of collection (book)

Geo-social keyword skyline queries

Naoya Taguchi, Daichi Amagata, Takahiro Hara

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)　Vol. 10438　p. 425-435　2017　Research paper (international conference proceedings)

Geo-social keyword top-k data monitoring over sliding window

Shunya Nishio, Daichi Amagata, Takahiro Hara

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)　Vol. 10438　p. 409-424　2017　Research paper (international conference proceedings)

Sliding window top-k dominating query processing over distributed data streams

Daichi Amagata, Takahiro Hara, Shojiro Nishio

DISTRIBUTED AND PARALLEL DATABASES　Vol. 34　No. 4　p. 535-566　2016/12　Research paper (scientific journal)

モバイルアドホックネットワークにおける効率的なデータモニタリング手法

中山 侑紀, 天方 大地, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　Vol. 57　No. 12　p. 2798-2810　2016/12　Research paper (scientific journal)

A Sampling-Based Boundary Detection Method with Consideration of Boundary Shape in Dense Mobile Wireless Sensor Networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara

Proc. of International Conference on Advanced Mobile Computing & Multimedia (MoMM 2016)　2016/11　Research paper (international conference proceedings)

Research challenges in bionanosensor networks

Yutaka Okaie, Tadashi Nakano, Takuya Obuchi, Takahiro Hara

Proceedings - IEEE INFOCOM　Vol. 2016-　p. 1035-1036　2016/09/06　Research paper (international conference proceedings)

Epidemic Information Dissemination for Molecular Communication among Mobile Bio-nanomachines

Jumpei Namba, Tadashi Nakano, Yutaka Okaie, Takahiro Hara

Proc. of ACM International Conference on Nanoscale Computing and Communication (NanoCom 2016)　2016/09　Research paper (international conference proceedings)

A Measurement Study on Virtualization Overhead for Applications of Industrial Automation Systems

Yu Kaneko, Toshio Ito, Takahiro Hara

Proc. of IEEE International Conference on Emerging Technology & Factory Automation (ETFA 2016)　2016/09　Research paper (international conference proceedings)

ユーザの移動状況に適応したダミーによる位置曖昧化手法

林田 秀平, 水野 聖也, 天方 大地, 原 隆浩, Xing Xie

情報処理学会マルチメディア, 分散, 協調とモバイル(DICOMO2016)シンポジウム論文集　2016/07

社会センサデータ生成・共有基盤における入出力インタフェースの設計と実装

谷山 雄基, 中嶋 奎介, 義久 智樹, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2016)シンポジウム論文集　2016/07　Research paper (other academic)

Leader-follower Based Target Detection Model for Mobile Molecular Communication Networks

Tadashi Nakano, Shouhei Kobayashi, Takako Koujin, Chen-Hao Chan, Yu-Hsiang Hsu, Yutaka Okaie, Takuya Obuchi, Takahiro Hara, Yasushi Hiraoka, Tokuko Haraguchi

Proc. of IEEE International Workshop on Signal Processing advances in Wireless Communications (SPAWC 2016)　2016/07　Research paper (international conference proceedings)

Efficient processing of top-k dominating queries in distributed environments

Daichi Amagata, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

WORLD WIDE WEB-INTERNET AND WEB INFORMATION SYSTEMS　Vol. 19　No. 4　p. 545-577　2016/07　Research paper (scientific journal)

Grand Challenge: Monitoring Top-k on Real-time Dynamic Social-network Graphs

Kamalas Udomlamlert, Cosmas Krisna Adiputra, Takahiro Hara

Proc. of ACM International Conference on Distributed and Event-Based Systems (DEBS 2016)　2016/06　Research paper (international conference proceedings)

RPR: Recommendation for Passengers by Roads based on Cloud Computing and Taxis Traces Data

Weipeng Jing, Likun Hu, Lei Shu, Mithun Mukherjee, Takahiro Hara

Personal and Ubiquitous Computing　2016/06　Research paper (scientific journal)

Reducing Expenses of Top-k Monitoring in Sensor Cloud Services

Kamalas Udomlamlert, Takahiro Hara

Proc. of ACM International Conference on Distributed and Event-Based Systems (DEBS 2016)　2016/06　Research paper (international conference proceedings)

Diversified Set Monitoring over Distributed Data Streams

Daichi Amagata, Takahiro Hara

Proc. of ACM International Conference on Distributed and Event-Based Systems (DEBS 2016)　2016/06　Research paper (international conference proceedings)

Probabilistic nearest neighbor query processing on distributed uncertain data

Daichi Amagata, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

DISTRIBUTED AND PARALLEL DATABASES　Vol. 34　No. 2　p. 259-287　2016/06　Research paper (scientific journal)

Efficient Top-k Result Diversification for Mobile Sensor Data

Masahiro Yokoyama, Takahiro Hara

Proc. of IEEE International Conference on Distributed Computing Systems (IEEE ICDCS 2016)　2016/06　Research paper (international conference proceedings)

Research Challenges in Bionanosensor Networks

Yutaka Okaie, Tadashi Nakano, Takuya Obuchi, Takahiro Hara

Proc. of INFOCOM Workshops 2016　2016/04　Research paper (international conference proceedings)

Reducing Expenses of Sensor-Cloud Services for Dynamic Skyline Monitoring

Kamalas Udomlamlert, Takahiro Hara, Shojiro Nishio

2016/03　Research paper (other academic)

ユーザの嗜好の保存度合いを考慮した位置プライバシ保護のためのダミー生成手法とその評価

水野 聖也, 原 隆浩, Xing Xie

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/03　Research paper (other academic)

アドホックネットワークにおける凸包領域の継続的な検索手法

駒井 友香, 原 隆浩

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/03　Research paper (other academic)

協調Web検索におけるグループ意思決定ダイナミクスの調査

中村 達哉, 渡辺 美紀, Thammasan Nattapong, 浦井 健次, 冨永 登夢, 中村 泰, 細田 一史, 原 隆浩

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/03　Research paper (other academic)

Twitterユーザの関心の表現に適したデータ構造の検証

松岡 紀行, 中村 達哉, 白川 真澄, 原 隆浩, 西尾 章治郎

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/03　Research paper (other academic)

距離・キーワード・ソーシャル関係に基づくスカイライン検索

田口直弥, 天方大地, 原隆浩, 西尾章治郎

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）　2016/03　Research paper (other academic)

位置，キーワードおよびソーシャル関係に基づくTop-kパブリッシュ/サブスクライブ

西尾俊哉, 天方大地, 原隆浩, 西尾章治郎

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）　2016/03　Research paper (other academic)

分散ストリーム環境における多様性を考慮したデータモニタリング

天方大地, 原隆浩

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）　2016/03　Research paper (other academic)

高精度なツイート投稿位置の推定に有効なルールの抽出

宮内 天士, 白川 真澄, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/02　Research paper (other academic)

ウェーブレット木を用いたN-gram IDFの近似計算手法

白川 真澄, 原 隆浩

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）論文集　2016/02　Research paper (other academic)

Threshold-Based Distributed Continuous Top-k Query Processing for Minimizing Communication Overhead

Kamalas Udomlamlert, Takahiro Hara, Shojiro Nishio

IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS　Vol. E99D　No. 2　p. 383-396　2016/02　Research paper (scientific journal)

アドホックネットワークにおける2フェーズMaxRS検索手法

天方大地, 中山侑紀, 原隆浩, 西尾章治郎

第8回データ工学と情報マネジメントに関するフォーラム（DEIMフォーラム2016）　2016/02　Research paper (other academic)

モバイルセンサネットワーク上の欠損データ再収集のためのエージェント制御方式

松尾 和哉, 後藤 啓介, 神崎 映光, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　Vol. 57　No. 2　p. 506-519　2016/02　Research paper (scientific journal)

Dummy-based User Location Anonymization under Real-World Constraints

Takahiro Hara, Akiyoshi Suzuki, Mayu Iwata, Yuki Arase, Xing Xie

IEEE Access　2016/02　Research paper (scientific journal)

Static bionanosensor networks for target detection

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

SpringerBriefs in Computer Science　No. 9789811024672　p. 15-27　2016　Part of collection (book)

Controllability of mobile bionanosensors

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

SpringerBriefs in Computer Science　No. 9789811024672　p. 53-58　2016　Part of collection (book)

Dynamic bionanosensor networks for target tracking

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

SpringerBriefs in Computer Science　No. 9789811024672　p. 29-51　2016　Part of collection (book)

Conclusion

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

SpringerBriefs in Computer Science　No. 9789811024672　p. 59-65　2016　Part of collection (book)

S-3 System: A System for Sharing Social Sensor Data and Analytical Programs

Keisuke Nakashima, Masahiro Yokoyama, Yuki Taniyama, Tomoki Yoshihisa, Takahiro Hara

ADJUNCT PROCEEDINGS OF THE 13TH INTERNATIONAL CONFERENCE ON MOBILE AND UBIQUITOUS SYSTEMS: COMPUTING NETWORKING AND SERVICES (MOBIQUITOUS 2016)　p. 147-152　2016　Research paper (international conference proceedings)

An Efficient Method for Identifying MaxRS Location in Mobile Ad Hoc Networks

Yuki Nakayama, Daichi Amagata, Takahiro Hara

DATABASE AND EXPERT SYSTEMS APPLICATIONS, DEXA 2016, PT I　Vol. 9827　p. 37-51　2016　Research paper (international conference proceedings)

Top-k Query Processing and Malicious Node Identification Based on Node Grouping in MANETs

Takuji Tsuda, Yuka Komai, Takahiro Hara, Shojiro Nishio

IEEE ACCESS　Vol. 4　p. 993-1007　2016　Research paper (scientific journal)

Monitoring MaxRS in spatial data streams

Daichi Amagata, Takahiro Hara

Advances in Database Technology - EDBT　Vol. 2016-　p. 317-328　2016　Research paper (international conference proceedings)

Range-based Continuous Threshold Query Processing in Mobile Ad Hoc Networks

Yuki Nakayama, Daichi Amagata, Takahiro Hara, Shojiro Nishio

13th International Conference on Advances in Mobile Computing and Multimedia, MoMM 2015 - Proceedings　p. 169-178　2015/12/11　Research paper (international conference proceedings)

Mobility and Controllability of Bio-nanomachines

Yutaka Okaie, Tadashi Nakano, Takuya Obuchi, Takahiro Hara

Proc. of International Conference on Bio-inspired Information and Communications Technologies (BICT 2015)　2015/12　Research paper (international conference proceedings)

無線センサネットワークにおけるセンサ端末の故障とスリープ制御を考慮した局所的なトポロジメンテナンスについて

小路 直紀, 松尾 和哉, 神崎 映光, 原 隆浩, 西尾 章治郎

情報処理学会研究報告(マルチメディア通信と分散処理研究会)　2015/12　Research paper (other academic)

モバイルセンサデータベースにおける効率的なTop-k検索結果の多様化について

横山 正浩, 原 隆浩, 西尾 章治郎

第8回Webとデータベースに関するフォーラム（WebDB Forum 2015）　2015/11　Research paper (other academic)

Wikipediaのページビュー数を用いたTwitter上の話題語に対するエンティティリンキング

中村 達哉, 白川 真澄, 原 隆浩, 西尾 章治郎

第8回Webとデータベースに関するフォーラム（WebDB Forum 2015）　2015/11　Research paper (other academic)

モバイルセンサネットワークにおけるデータ処理技術～動きまわるセンサが拓く未来～

神崎 映光, 原 隆浩, 義久 智樹, 西尾 章治郎

情報処理　Vol. 56　No. 11　p. 1096-1101　2015/11

空間データストリーム環境におけるMaxRSモニタリング

天方大地, 原隆浩

2015/11　Research paper (other academic)

センサ・モバイルビッグデータを有効利用するためのプラットフォーム技術

原 隆浩

情報処理　Vol. 56　No. 10　p. 973-977　2015/10

IoT環境におけるストリーミング処理時間短縮手法

義久 智樹, 原 隆浩

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2015/10　Research paper (other academic)

Candidate Pruning Technique for Skyline Computation Over Frequent Update Streams

Kamalas Udomlamlert, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Database and Expert Systems Applications (DEXA 2015)　p. 93-108　2015/09　Research paper (international conference proceedings)

In Silico Experiments of Mobile Bionanosensor Networks for Target Tracking

Yutaka Okaie, Takuya Obuchi, Takahiro Hara, Shojiro Nishio

Proc. of ACM International Conference on Nanoscale Computing and Communication (ACM NANOCOM 2015)　p. 14:1-14:6　2015/09　Research paper (international conference proceedings)

An Indexing Method using Sensing Information on Integrated Sensor Networks

Ryo Kawasumi, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Proc. of IEEE Pacific Rim Conference Communications, Computers and Signal Processing (PACRIM'15)　2015/08　Research paper (international conference proceedings)

指定位置を撮影した写真を撮影条件と地図情報により検索するシステム

谷山 雄基, 義久 智樹, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2015)シンポジウム論文集　p. 1301-1308　2015/07　Research paper (other academic)

ゲーミフィケーションに基づくコンテキスト収集システムにおけるライフログ機能の導入とその効果の検証

川上 慶士, 大澤 純, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2015)シンポジウム論文集　p. 945-952　2015/07　Research paper (other academic)

モバイルアドホックネットワークにおける継続的データ収集手法

中山 侑紀, 天方 大地, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2015)シンポジウム論文集　p. 205-212　2015/07　Research paper (other academic)

Inbody Mobile Bionanosensor Networks Through Non-diffusion-based Molecular Communication

Takuya Obuchi, Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

Proc. of IEEE International Conference on Communications (ICC 2015)　Vol. 2681　No. 2687　2015/06　Research paper (international conference proceedings)

N-gram IDF: A global term weighting scheme based on information distance

Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

WWW 2015 - Proceedings of the 24th International Conference on World Wide Web　p. 960-970　2015/05/18　Research paper (international conference proceedings)

Efficient Boundary Detection Using Overhearing of Sensor Data and Diagram in Dense Mobile Wireless Sensor Networks

IPSJ Journal　Vol. 56　No. 3　p. 1107-1120　2015/03　Research paper (scientific journal)

コルモゴロフ複雑性に基づくIDFの単語N-gramへの適用

白川 真澄, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

ソーシャルメディアからの言語横断的な話題抽出に向けたエンティティリンキング手法

中村 達哉, 白川 真澄, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

アドホックネットワーク上のTop-k検索における攻撃端末検出のための認証子付き通知メッセージ作成手法

津田 琢士, 駒井 友香, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

複数拠点統合型センサネットワークにおけるセンシング時刻の分布を考慮した時空間インデックス構築手法

川住 涼, 義久 智樹, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

密なモバイルセンサネットワークにおける観測値の時間的変化を用いた定期的な境界線検出手法

松尾 和哉, 後藤 啓介, 神崎 映光, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

時空間的なデータ分布とその変化を考慮したモバイルセンサデータの検索支援機構について

佐崎 悠, 神崎 映光, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

ユーザの行動プランの変更を考慮したダミーによるユーザ位置曖昧化手法

加藤 諒, 原 隆浩, Xing Xie, 岩田 麻佑, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2015)　2015/03　Research paper (other academic)

A Method for Detecting Local Events using the Spatiotemporal Locality of Microblog Posts

Takuya Sugitani, Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

International Journal of Web Information Systems　2015/03　Research paper (scientific journal)

KNN Search Utilizing Index of the Minimum Road Travel Time in Time-Dependent Road Networks

Yuka Komai, Duong Hong Nguyen, Takahiro Hara, Shojiro Nishio

DBSJ Journal　2015/03　Research paper (scientific journal)

Efficient Multi-Dimensional Top-K Query Processing in Wireless Multi-Hop Networks

Daichi Amagata, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Mobile Information Systems　2015/03　Research paper (scientific journal)

Wikipedia-based Semantic Similarity Measurements for Noisy Short Texts Using Extended Naive Bayes

Masumi Shirakawa, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

IEEE Transactions on Emerging Topics in Computing　Vol. 3　No. 2　p. 205-219　2015/03　Research paper (scientific journal)

Insights of Top-k Query in Duty-Cycled Wireless Sensor Networks

Chunsheng Zhu, Laurence T. Yang, Lei Shu, Takahiro Hara, Shojiro Nishio

IEEE Transactions on Industrial Electronics　2015/02　Research paper (scientific journal)

Data Aggregation and Forwarding Route Control for Efficient Data Gathering in Dense Mobile Wireless Sensor Networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Modeling and Optimization in Science and Technologies　Vol. 4　p. 113-143　2015　Part of collection (book)

Big data analytics and knowledge discovery: 17th International Conference, DaWaK 2015 Valencia, Spain, September 1–4, 2015 proceedings

Sanjay Madria, Takahiro Hara

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)　Vol. 9263　2015　Research paper (international conference proceedings)

Distributed Top-k Query Processing on Multi-dimensional Data with Keywords

Daichi Amagata, Takahiro Hara, Shojiro Nishio

PROCEEDINGS OF THE 27TH INTERNATIONAL CONFERENCE ON SCIENTIFIC AND STATISTICAL DATABASE MANAGEMENT　p. 10:1-10:12　2015　Research paper (international conference proceedings)

Signature-Based Top-k Query Processing against Data Replacement Attacks in MANETs

Takuji Tsuda, Yuka Komai, Takahiro Hara, Shojiro Nishio

2015 IEEE 34th Symposium on Reliable Distributed Systems (SRDS)　p. 130-139　2015　Research paper (international conference proceedings)

k Nearest Neighbor Search for Location-Dependent Sensor Data in MANETs

Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

IEEE ACCESS　Vol. 3　p. 942-954　2015　Research paper (scientific journal)

Processing Convex Hull Queries in MANETs

Yuka Komai, Takahiro Hara, Shojiro Nishio

2015 16TH IEEE INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT, VOL 1　p. 64-73　2015　Research paper (international conference proceedings)

A proposed security scheme against Denial of Service attacks in cluster-based wireless sensor networks

Guangjie Han, Wen Shen, Trung Q. Duong, Mohsen Guizani, Takahiro Hara

SECURITY AND COMMUNICATION NETWORKS　Vol. 7　No. 12　p. 2542-2554　2014/12　Research paper (scientific journal)

Bacterium-based Mobile Bionanosensor Networks for Target Tracking: A Biologically Realistic Model

Yutaka Okaie, Tadashi Nakano, Takuya Obuchi, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Bio-inspired Information and Communications Technologies (BICT 2014)　2014/12　Research paper (international conference proceedings)

データ更新が頻繁な環境におけるスカイラインデータ計算 アルゴリズムの提案

Kamalas Udomlamlert, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2014/12　Research paper (other academic)

位置プライバシ問題の啓蒙のためのダミーによる位置曖昧化手法の体験システムの実装

加藤 諒, 原 隆浩, 白川 真澄, 駒井 友香, 真嶋 温佳, 天方 大地, 大澤 純, 松尾 和哉, 横山 正浩, 佐崎 悠, 中村 達哉, 水野 聖也, 西尾 章治郎

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2014/12　Research paper (other academic)

アドホックネットワークにおける凸包端末の検索手法

駒井 友香, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2014/12　Research paper (other academic)

A Method to Reduce Interruption Time for the Multiple Bit Rate Video Delivery in P2P Streaming Environments

Masahiro Yokoyama, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Advances in Mobile Computing & Multimedia (MoMM-2014)　2014/12　Research paper (international conference proceedings)

CTR: An Efficient Top-K Query Routing in Manets

Daichi Amagata, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Advances in Mobile Computing & Multimedia (MoMM-2014)　p. 225-234　2014/12　Research paper (international conference proceedings)

Wikipediaを用いたソーシャルメディアからの言語横断的な話題抽出システムの試作

中村 達哉, 白川 真澄, 原 隆浩, 西尾 章治郎

情報処理学会研究報告(データベースシステム研究会)　Vol. 2014-DBS-160　No. 11　p. 1-9　2014/11　Research paper (other academic)

分散データベースにおける効率的な確率的最近傍データ検索手法

天方 大地, 佐々木 勇和, 原 隆浩, 西尾 章治郎

Webとデータベースに関するフォーラム論文集　2014/11　Research paper (other academic)

ビッグデータとの付き合い方－ビッグデータ活用のための技術と応用基盤

原 隆浩

情報処理　Vol. 55　No. 11　p. 1275-1280　2014/11

KNN Search Utilizing Index of the Minimum Road Travel Time in Time-Dependent Road Networks

Yuka Komai, Duong Hong Nguyen, Takahiro Hara, Shojiro Nishio

Proc. of International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014)　2014/10　Research paper (international conference proceedings)

An Efficient Indexing Method for Mobile Sensor Data Collection on Integrated Sensor Networks

Ryo Kawasumi, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Proc. of International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014)　2014/10　Research paper (international conference proceedings)

SeRAVi: a Spatio-Temporal Data Distribution Visualization System for Mobile Sensor Data Retrieval

Haruka Sazaki, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proc. of International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014)　2014/10　Research paper (international conference proceedings)

A Preference Extraction Method Using Installed Applications and Their Descriptions

Seiya Mizuno, Jun Osawa, Takahiro Hara, Shojiro Nishio

Proc. of International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014)　2014/10　Research paper (international conference proceedings)

A Study on Efficient Event Monitoring in Dense Mobile Wireless Sensor Networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Prof. of IEEE International Symposium on Reliable Distributed Systems (SRDS 2014)　2014/10　Research paper (international conference proceedings)

A Convex Hull Query Processing Method in MANETs

Yuka Komai, Takahiro Hara, Shojiro Nishio

Prof. of IEEE International Symposium on Reliable Distributed Systems (SRDS 2014)　2014/10　Research paper (international conference proceedings)

Autonomous mobile bionanosensor networks for target tracking: A two-dimensional model

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

NANO COMMUNICATION NETWORKS　Vol. 5　No. 3　p. 63-71　2014/09　Research paper (scientific journal)

複数拠点統合型センサネットワークにおけるセンシング情報を考慮した時空間インデックス構築手法

川住 涼, 義久 智樹, 原 隆浩, 西尾 章治郎

情報処理学会研究報告(データベースシステム研究会)　2014/08　Research paper (other academic)

A Negative Location-based Information Dissemination Method in Mobile Ad Hoc Networks

Yuya Sasaki, Toshimitsu Fujii, Takahiro Hara, Shojiro Nishio

Proc. of International Workshop on Mobile Collaborative cROwdsourcing and Sensing (M-CROS 2014)　2014/07　Research paper (international conference proceedings)

Top-k Query Processing and Malicious Node Identification against Data Replacement Attack in MANETs

Takuji Tsuda, Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of IEEE International Conference on Mobile Data Management (IEEE MDM 2014)　2014/07　Research paper (international conference proceedings)

Overhearing-based Efficient Boundary Detection in Dense Mobile Wireless Sensor Networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proc. of IEEE International Conference on Mobile Data Management (IEEE MDM 2014)　2014/07　Research paper (international conference proceedings)

ユーザの訪問場所の傾向を考慮したダミーによるユーザ位置曖昧化手法

加藤 諒, 松野 有弥, 原 隆浩, 荒瀬 由紀, Xing Xie, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイル(DICOMO 2014)シンポジウム論文集　2014/07　Research paper (other academic)

時間依存道路ネットワークにおける各道路の最短移動時間に関するインデックスを用いたk最近傍検索手法

駒井 友香, Duong Hong Nguyen, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア，分散，協調とモバイル(DICOMO2014)シンポジウム論文集　2014/07　Research paper (other academic)

Wikipediaによる語彙拡張と指数減衰モデルを用いたTwitterユーザの動的な関心の抽出

松岡 紀行, 白川 真澄, 原 隆浩, 西尾 章治郎

ソーシャルコンピューティングシンポジウム論文集　2014/06　Research paper (other academic)

保有アプリケーションとその説明文中の単語を用いたユーザの嗜好表現手法の提案

水野 聖也, 大澤 純, 原 隆浩, 西尾 章治郎

ソーシャルコンピューティングシンポジウム論文集　2014/06　Research paper (other academic)

Communication-Efficient Preference Top-k Monitoring Queries via Subscriptions

Kamalas Udomlamlert, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Scientific and Statistical Database Management (SSDBM 2014)　2014/06　Research paper (international conference proceedings)

Modeling and Performance Evaluation of Mobile Bionanosensor Networks for Target Tracking

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Kazufumi Hosoda, Yasushi Hiraoka, Shojiro Nishio

Proc. of IEEE International Conference on Communications (ICC 2014)　p. 3936-3974　2014/06　Research paper (international conference proceedings)

Top-k query processing for replicated data in mobile peer to peer networks

Yuya Sasaki, Takahiro Hara, Shojiro Nishio

JOURNAL OF SYSTEMS AND SOFTWARE　Vol. 92　p. 45-58　2014/06　Research paper (scientific journal)

モバイルアドホックネットワークにおけるクラスタを用いたTop-kクエリルーティング手法

天方 大地, 佐々木 勇和, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　Vol. 55　No. 5　p. 1555-1567　2014/05　Research paper (scientific journal)

KNN Query Processing Methods in Mobile Ad Hoc Networks

Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

IEEE TRANSACTIONS ON MOBILE COMPUTING　Vol. 13　No. 5　p. 1090-1103　2014/05　Research paper (scientific journal)

Location anonymization using real car trace data for location based services

Takahiro Hara, Ayana Yamamoto, Mayu Iwata, Yuki Arase, Xing Xie, Shojiro Nishio

Proceedings of the 8th International Conference on Ubiquitous Information Management and Communication, ICUIMC 2014　2014　Research paper (international conference proceedings)

Data Allocation Techniques for Mobile Sensor Networks

Takahiro Hara, Shojiro Nishio

2014 28TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS (WAINA)　p. 209-214　2014　Research paper (international conference proceedings)

A survey on communication and data management issues in mobile sensor networks

Chunsheng Zhu, Lei Shu, Takahiro Hara, Lei Wang, Shojiro Nishio, Laurence T. Yang

WIRELESS COMMUNICATIONS & MOBILE COMPUTING　Vol. 14　No. 1　p. 19-36　2014/01　Research paper (scientific journal)

Distributing Nanomachines for Minimizing Mean Residence Time of Molecular Signals in Bionanosensor Networks

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

IEEE SENSORS JOURNAL　Vol. 14　No. 1　p. 218-227　2014/01　Research paper (scientific journal)

Energy-Efficient Data Gathering using Sleep Scheduling and Spatio-Temporal Interpolation in Wireless Sensor Networks

Akimitsu Kanzaki, Shinya Kondo, Takahiro Hara, Shojiro Nishio

2014 28TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS (WAINA)　p. 185-190　2014　Research paper (international conference proceedings)

A Menu-based Content Search System based on Relationships between Mobile User Context and Information Needs

Mayu Iwata, Hiroki Miyamoto, Takahiro Hara, Kentaro Shimatani, Tomohiro Mashita, Kiyoshi Kiyokawa, Shojiro Nishio, Haruo Takemura

2014 28TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS (WAINA)　p. 197-202　2014　Research paper (international conference proceedings)

SKY R-tree: An Index Structure for Distance-Based Top-k Query

Yuya Sasaki, Wang-Chien Lee, Takahiro Hara, Shojiro Nishio

DATABASE SYSTEMS FOR ADVANCED APPLICATIONS, DASFAA 2014, PT I　Vol. 8421　p. 220-235　2014　Research paper (international conference proceedings)

A mobile agents control scheme for multiple sinks in dense mobile wireless sensor networks

Keisuke Goto, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST　Vol. 131　p. 52-65　2014　Research paper (international conference proceedings)

Mobile Bionanosensor Networks through Molecular Communication

Tadashi Nakano, Takahiro Hara, Yutaka Okaie, Takuya Obuchi, Shojiro Nishio

2014 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC)　p. 525-527　2014　Research paper (international conference proceedings)

k-nearest neighbor search based on node density in MANETs

Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

MOBILE INFORMATION SYSTEMS　Vol. 10　No. 4　p. 385-405　2014　Research paper (scientific journal)

MLJ: Language-independent real-time search of tweets reported by media outlets and journalists

Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

Proceedings of the VLDB Endowment　Vol. 7　No. 13　p. 1605-1608　2014　Research paper (scientific journal)

Collecting Conceptualized Relations from Terabytes of Web Texts for Understanding Unknown Terms

Masumi Shirakawa, Kotaro Nakayama, Eiji Aramaki, Takahiro Hara, Shojiro Nishio

2014 IEEE/WIC/ACM INTERNATIONAL JOINT CONFERENCES ON WEB INTELLIGENCE (WI) AND INTELLIGENT AGENT TECHNOLOGIES (IAT), VOL 1　p. 86-93　2014　Research paper (international conference proceedings)

Semantic Similarity Measurements for Multi-lingual Short Texts Using Wikipedia

Tatsuya Nakamura, Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

2014 IEEE/WIC/ACM INTERNATIONAL JOINT CONFERENCES ON WEB INTELLIGENCE (WI) AND INTELLIGENT AGENT TECHNOLOGIES (IAT), VOL 2　p. 22-29　2014　Research paper (international conference proceedings)

Security issues on outlier detection and countermeasure for distributed hierarchical wireless sensor networks

Yiying Zhang, Lin He, Lei Shu, Takahiro Hara, Shojiro Nishio

Crisis Management: Concepts, Methodologies, Tools, and Applications　Vol. 2-3　p. 1099-1126　2013/11/30　Part of collection (book)

放送通信融合環境における再生端末の受信済データを考慮したストリーミング配信手法

梅澤 真弘, 義久 智樹, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　2013/11　Research paper (scientific journal)

Single target tracking in bionanosensor networks: Preliminary simulation results

Yutaka Okaie, Tadashi Nakano, Takahiro Hara, Shojiro Nishio

Proceedings of the 8th International Conference on Body Area Networks, BodyNets 2013　p. 476-477　2013/10/29　Research paper (international conference proceedings)

Path planning using a mobile anchor node based on trilateration in wireless sensor networks

Guangjie Han, Huihui Xu, Jinfang Jiang, Lei Shu, Takahiro Hara, Shojiro Nishio

WIRELESS COMMUNICATIONS & MOBILE COMPUTING　Vol. 13　No. 14　p. 1324-1336　2013/10　Research paper (scientific journal)

モバイルアドホックネットワークにおけるTop-k検索のための位置情報を用いた複製配置手法

佐々木 勇和, 原 隆浩, 西尾 章治郎

第12回情報科学技術フォーラム(FIT 2013)論文集　2013/09　Research paper (other academic)

Continuous Top-k Query Processing on Horizontally-distributed Data

2013/09　Research paper (other academic)

Integration of traffic reduction and sleep scheduling for energy-efficient data gathering in wireless sensor networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

COMPUTER SYSTEMS SCIENCE AND ENGINEERING　Vol. 28　No. 4　p. 237-249　2013/07　Research paper (scientific journal)

A Content Search System Considering the Activity and Context of a Mobile User

Mayu Iwata, Hiroki Miyamoto, Takahiro Hara, Daijiro Komaki, Kentaro Shimatani, Tomohiro Mashita, Kiyoshi Kiyokawa, Toshiaki Uemukai, Gen Hattori, Shojiro Nishio, Haruo Takemura

Personal and Ubiquitous Computing　2013/06　Research paper (scientific journal)

A Next Location Prediction Method for Smartphones Using Blockmodels

Jun Fukano, Tomohiro Mashita, Takahiro Hara, Kiyoshi Kiyokawa, Haruo Takemura, Shojiro Nishio

Proc. of IEEE Virtual Reality (VR 2013)　2013/03　Research paper (international conference proceedings)

スマートフォン利用者のコンテキストログを用いたアプリケーション推薦システム

嶋谷 健太郎, 間下 以大, 原 隆浩, 清川 清, 竹村 治雄, 西尾 章治郎

情報処理学会研究報告(ユビキタスコンピューティング研究会)　2013/03　Research paper (other academic)

Probabilistic semantic similarity measurements for noisy short texts using wikipedia entities

Masumi Shirakawa, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

International Conference on Information and Knowledge Management, Proceedings　p. 903-908　2013　Research paper (international conference proceedings)

User location anonymization method for wide distribution of dummies

Ryo Kato, Mayu Iwata, Takahiro Hara, Yuki Arase, Xing Xie, Shojiro Nishio

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)　Vol. 8056　No. 2　p. 259-273　2013　Research paper (international conference proceedings)

Message from DMWPC 2013 international workshop chairs

Takahiro Hara, Akimitsu Kanzaki

Proceedings - 27th International Conference on Advanced Information Networking and Applications Workshops, WAINA 2013　2013　Research paper (international conference proceedings)

Detecting Local Events by Analyzing Spatiotemporal Locality of Tweets

Takuya Sugitani, Masumi Shirakawa, Takahiro Hara, Shojiro Nishio

2013 IEEE 27TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS (WAINA)　p. 191-196　2013　Research paper (international conference proceedings)

Data gathering considering geographical distribution of data values in dense mobile wireless sensor networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2013 IEEE 27TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS (AINA)　p. 445-452　2013　Research paper (international conference proceedings)

Agent Redeployment and Missing Data Regathering in Mobile Wireless Sensor Networks

Kazuya Matsuo, Keisuke Goto, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2013 IEEE 37TH ANNUAL COMPUTER SOFTWARE AND APPLICATIONS CONFERENCE (COMPSAC)　p. 100-117　2013　Research paper (international conference proceedings)

A Robust Routing Method for Top-k Queries in Mobile Ad Hoc Networks

Daichi Amagata, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

2013 IEEE 14TH INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT (MDM 2013), VOL 1　p. 251-256　2013　Research paper (international conference proceedings)

A proportional fairness backoff scheme for funnelling effect in wireless sensor networks

Yuanfang Chen, Mingchu Li, Lei Shu, Lei Wang, Takahiro Hara

TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES　Vol. 23　No. 6　p. 585-597　2012/10　Research paper (scientific journal)

アドホックネットワーク上の効率的なTop-k検索のためのルーティング手法

天方 大地, 佐々木 勇和, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイル(DICOMO2012)シンポジウム論文集　p. 1236-1244　2012/07

A Content Search System for Mobile Devices based on User Context Recognition

Tomohiro Mashita, Daijiro Komaki, Mayu Iwata, Kentaro Shimatani, Hiroki Miyamoto, Takahiro Hara, Kiyoshi Kiyokawa, Haruo Takemura, Shojiro Nishio

Proc. of International Workshop on Ambient Information Technologies (AMBIT 2012)　2012/03　Research paper (international conference proceedings)

Human Activity Recognition for a Content Search System Considering Situations of Smartphone Users

Tomohiro Mashita, Kentaro Shimatani, Mayu Iwata, Hiroki Miyamoto, Daijiro Komaki, Takahiro Hara, Kiyoshi Kiyokawa, Haruo Takemura, Shojiro Nishio

Proc. of International Workshop on Ambient Information Technologies (AMBIT 2012)　2012/03　Research paper (international conference proceedings)

Wikipediaとナイーブベイズを用いた自然文に対する関連語句取得手法

白川 真澄, 中山 浩太郎, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2012)　2012/03　Research paper (other academic)

密なモバイルセンサネットワークにおける複数シンクのデータ収集条件を考慮したエージェント制御方式

後藤 啓介, 佐々木 勇和, 原 隆浩, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2012)　2012/03　Research paper (other academic)

協調地図アプリケーションにおける携帯端末の種類による地図操作の違いに関する調査

足利 えりか, 小牧 大治郎, 原 隆浩, 服部 元, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2012)　2012/03　Research paper (other academic)

アドホックネットワークにおける端末の疎密を考慮したk最近傍端末の検索手法

駒井 友香, 佐々木 勇和, 原 隆浩, 西尾 章治郎

アドホックネットワークにおける端末の疎密を考慮したk最近傍端末の検索手法", データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2012)　2012/03　Research paper (other academic)

密なモバイルセンサネットワークにおける地理的粒度を考慮したデータ収集のためのエージェント制御方式

後藤 啓介, 佐々木 勇和, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　2012/02　Research paper (scientific journal)

A traffic reduction method considering the change in spatial and temporal characteristics of data in wireless sensor networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

The Special Interest Group Technical Reports of IPSJ (2011-DPS-150)　2012/02　Research paper (other academic)

Effective Node Deployment in Sparse Mobile Sensor Networks

Treeprapin Kriengsak, Kanzaki Akimitsu, Hara Takahiro, Nishio Shojiro

IMT　Vol. 7　No. 1　p. 425-434　2012

Searching K-nearest neighbor nodes based on node density in ad hoc networks

Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

ACM International Conference Proceeding Series　p. 199-207　2012　Research paper (international conference proceedings)

A dummy-based anonymization method based on user trajectory with pauses

Ryo Kato, Mayu Iwata, Takahiro Hara, Akiyoshi Suzuki, Xing Xie, Yuki Arase, Shojiro Nishio

GIS: Proceedings of the ACM International Symposium on Advances in Geographic Information Systems　p. 249-258　2012　Research paper (international conference proceedings)

Energy-efficient data gathering using traffic reduction based on change in data characteristics in wireless sensor networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings of the 2012 15th International Conference on Network-Based Information Systems, NBIS 2012　p. 200-207　2012　Research paper (international conference proceedings)

Welcome message from DMWPC-2012 workshop organizers

Takahiro Hara, Sanjay Kumar Madria, Akimitsu Kanzaki

Proceedings - 26th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2012　2012　Research paper (international conference proceedings)

Data Forwarding Method Based on Status of Connection with Multiple Mobile Sinks in Wireless Sensor Networks

Akimitsu Kanzaki, Ayana Yamamoto, Takahiro Hara, Shojiro Nishio

2012 SEVENTH INTERNATIONAL CONFERENCE ON BROADBAND, WIRELESS COMPUTING, COMMUNICATION AND APPLICATIONS (BWCCA 2012)　p. 170-177　2012　Research paper (international conference proceedings)

How Does Mobile Context Affect People's Web Search Behavior?: A Diary Study of Mobile Information Needs and Search Behaviors

Daijiro Komaki, Takahiro Hara, Shojiro Nishio

2012 IEEE 26TH INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS (AINA)　p. 245-252　2012　Research paper (international conference proceedings)

モバイルアドホックネットワークにおけるack-carry方式を用いた情報配布手法

藤井 俊充, 加治 充, 佐々木 勇和, 原 隆浩, 西尾 章治郎

情報処理学会論文誌　Vol. 53　No. 1　p. 286-297　2012/01　Research paper (scientific journal)

Effective node deployment in sparse mobile sensor networks

Kriengsak Treeprapin, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Journal of Information Processing　Vol. 20　No. 1　p. 104-113　2012　Research paper (scientific journal)

An energy-efficient data gathering mechanism using travelingwave and spatial interpolation forwireless sensor networks

Yoshiaki Taniguchi, Akimitsu Kanzaki, Naoki Wakamiya, Takahiro Hara

Journal of Information Processing　Vol. 20　No. 1　p. 167-176　2012　Research paper (scientific journal)

モバイル協調Web検索のための情報共有機能の検討

小牧 大治郎, 原 隆浩, 服部 元, 西尾 章治郎

電子情報通信学会データ工学研究報告　2011/12　Research paper (other academic)

Removing Heavily Curved Path: Improved Dv-Hop Localization in Anisotropic Sensor Networks

Ziqi Fan, Yuanfang Chen, Lei Wang, Lei Shu, Takahiro Hara

Proc. of International Conference on Mobile Ad-hoc and Sensor Networks (MSN 2011)　2011/12　Research paper (international conference proceedings)

Data Gathering Using Mobile Agents in Dense Mobile Wireless Sensor Networks

Keisuke Goto, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Advances in Mobile Computing & Multimedia (MoMM-2011)　2011/12　Research paper (international conference proceedings)

A Genetic Approach to Multiple Mobile Agents Itinerary Planning in Wireless Sensor Networks

Wei Cai, Min Chen, Takahiro Hara, Lei Shu, Taekyoung Kwon

ACM/Springer Journal on Mobile Networks and Applications (MONET)　2011/12　Research paper (scientific journal)

Integrating Weather Information with Body Sensor Networks for Health Monitoring

Lei Shu, Jianwei Niu, Takahiro Hara, Manfred Hauswirth, Shojiro Nishio

Proc. of International Conference on Body Area Networks (BodyNets 2011)　2011/11　Research paper (international conference proceedings)

A Data Aggregation System using Mobile Agents on Integrated Sensor Networks

Yuto Hamaguchi, Tomoki Yoshihisa, Yoshimasa Ishi, Yuuichi Teranishi, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on on Advances in P2P Systems (AP2PS 2011)　2011/11　Research paper (international conference proceedings)

Exploring Map-based Interactions for Co-located Collaborative Work by Multiple Mobile Users

Erika Ashikaga, Mayu Iwata, Daijiro Komaki, Takahiro Hara, Shojiro Nishio

Proc. of ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL GIS 2011)　2011/11　Research paper (international conference proceedings)

ダミーを用いた位置曖昧化手法の評価

鈴木 晃祥, 岩田 麻佑, 荒瀬 由紀, 原 隆浩, Xing Xie, 西尾 章治郎

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2011/10　Research paper (other academic)

Streaming Delivery Methods for Interruption Time Reduction by Finer Data Division on Broadcast and Communication Integration Environments

Vol. 10　No. 2　p. 7-12　2011/10　Research paper (scientific journal)

Integration of Traffic Reduction based on Spatial and Temporal Correlation and Sleep Scheduling in Wireless Sensor Networks

Vol. 10　No. 2　p. 1-6　2011/10　Research paper (scientific journal)

A Menu-based Content Search Support System Considering Mobile User's Situations

Hiroki Miyamoto, Daijiro Komaki, Takahiro Hara, Kentaro Shimatani, Tomohiro Mashita, Kiyoshi Kiyokawa, Toshiaki Uemukai, Shojiro Nishio, Haruo Takemura

Proc. of International Conference on Ambient Systems, Networks and Technologies (ANT 2011)　2011/09　Research paper (international conference proceedings)

A Location-Based Content Search System Considering Situations of Mobile Users

Mayu Iwata, Takahiro Hara, Kentaro Shimatani, Tomohiro Mashita, Kiyoshi Kiyokawa, Shojiro Nishio, Haruo Takemura

Proc. of International Conference on Ambient Systems, Networks and Technologies (ANT 2011)　2011/09　Research paper (international conference proceedings)

Two-Phase Top-k Query Processing in Mobile Ad Hoc Networks

Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Network-Based Information Systems (NBiS 2011)　2011/09　Research paper (international conference proceedings)

Energy-Efficient Data Gathering using Sleep Scheduling and Spatial Correlation based on Data Distribution in Wireless Sensor Networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Network-Based Information Systems (NBiS 2011)　2011/09　Research paper (international conference proceedings)

Multimedia Streaming in Mobile Sensor Networks with Duty-Cycle and Environmental Energy Harvesting

Lei Shu, Takahiro Hara, Shojiro Nishio

IEEE COMSOC MMTC E-Letter　2011/09　Research paper (scientific journal)

Content Comparison Functions for Mobile Co-located Collaborative Web Search

Daijiro Komaki, Azusa Oku, Yuki Arase, Takahiro Hara, Toshiaki Uemukai, Gen Hattori, Shojiro Nishio

Journal of Ambient Intelligence and Humanized Computing　2011/09　Research paper (scientific journal)

Geographic Multipath Routing in Duty-Cycled Wireless Sensor Networks: One-Hop or Two-Hop?

Yuhui Dong, Lei Shu, Guangjie Han, Mohsen Guizani, Takahiro Hara

Proc. of International Conference on Mobile Computing and Networking (Mobicom 2011)　2011/08　Research paper (international conference proceedings)

Interruption Time Reduction Methods by Predicting Data Reception for Steaming Delivery on Hybrid Broadcasting Environments

Masahiro Umezawa, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Proc. of International Conference on Pacific Rim (PACRIM 2011)　2011/08　Research paper (international conference proceedings)

Wikipedia Sets: Context-Oriented Related Entity Acquisition from Multiple Words

Masumi Shirakawa, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

Proc. of IEEE/WIC/ACM International Conf. on Web Intelligence (WI 2011)　2011/08　Research paper (international conference proceedings)

放送通信融合型ストリーミング配信環境におけるデータの細分割による再生途切れ時間短縮手法

梅澤 真弘, 義久 智樹, 原 隆浩, 西尾 章治郎

電子情報通信学会データ工学研究報告　2011/08　Research paper (other academic)

密なモバイルセンサネットワークにおけるエージェントを用いたデータ収集方式のためのエージェント再配置方式について

後藤 啓介, 佐々木 勇和, 原 隆浩, 西尾 章治郎

電子情報通信学会データ工学研究報告　2011/08　Research paper (other academic)

On Integration of Traffic Reduction Based on Spatial and Temporal Correlation and Sleep Scheduling in Wireless Sensor Networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2011/08　Research paper (other academic)

The New Challenge: Mobile Multimedia Sensor Networks

Lei Shu, Takahiro Hara, Shojiro Nishio, Yuanfang Chen, Manfred Hauswirth

International Journal of Multimedia Intelligence and Security　2011/07　Research paper (scientific journal)

A Balanced Energy Consumption Sleep Scheduling Algorithm in Wireless Sensor Networks

Zhuxiu Yuan, Lei Wang, Lei Shu, Takahiro Hara, Zhenquan Qin

Proc. of International Wireless Communications and Computing Conference (IWCMC 2011)　2011/07　Research paper (international conference proceedings)

Implementing Top-k query in Duty-cycled Wireless Sensor Networks

Chunsheng Zhu, Laurence Tianruo Yang, Lei Shu, Takahiro Hara, Shojiro Nishio

Proc. of International Wireless Communications and Computing Conference (IWCMC 2011)　2011/07　Research paper (international conference proceedings)

A Flooding Control Method with Ack-Carry for Location-Based Information Dissemination in Mobile Ad Hoc Network

Toshimitsu Fujii, Mitsuru Kaji, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of International Symposium on Applications and the Internet (SAINT 2011)　2011/07　Research paper (international conference proceedings)

スマートフォンを用いたコンテンツ検索支援のためのモバイルコンテキスト認識

嶋谷 健太郎, 間下 以大, 宮本 大樹, 岩田 麻佑, 原 隆浩, 清川 清, 竹村 治雄, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

モバイルユーザの状況を考慮した候補提示型コンテンツ検索支援システム

宮本 大樹, 小牧 大治郎, 原 隆浩, 嶋谷 健太郎, 間下 以大, 清川 清, 上向 俊晃, 西尾 章治郎, 竹村 治雄

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

モバイルユーザの状況を考慮した位置依存コンテンツ検索支援システム

岩田 麻佑, 原 隆浩, 嶋谷 健太郎, 間下 以大, 清川 清, 西尾 章治郎, 竹村 治雄

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

複数拠点統合型センサネットワークにおけるデータ収集用モバイルエージェントの開発支援システム

濱口 雄人, 義久 智樹, 石 芳正, 寺西 裕一, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

移動型ノードを用いたセンサデータ収集における予測値配信による通信量削減手法

清野 航, 義久 智樹, 原 隆浩, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

複数の携帯端末を用いた協調作業における地図操作に関する一考察

足利 えりか, 岩田 麻佑, 小牧 大治郎, 原 隆浩, 上向 俊晃, 西尾 章治郎

情報処理学会マルチメディア, 分散, 協調とモバイルシンポジウム論文集　2011/07　Research paper (other academic)

アドホックネットワークにおける周辺情報配布のための通過予測を用いたフラッディング制御について

藤井 俊充, 加治 充, 佐々木 勇和, 原 隆浩, 西尾 章治郎

情報処理学会シンポジウムシリーズ マルチメディア，分散，協調とモバイルシンポジウム (DICOMO2011) 論文集　2011/07　Research paper (other academic)

On Sleep Scheduling Based on Spatial Correlation to Improve Data Acquisition Accuracy in Energy Conserving Method in Wireless Sensor Networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2011/07　Research paper (other academic)

On Selection of Data Forwarding Destinations Based on Status of Connection with Mobile Sinks in Wireless Sensor Networks

Ayana Yamamoto, Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2011/07　Research paper (other academic)

The Insights of DV-Based Localization Algorithms in the Wireless Sensor Networks with Duty-Cycled and Radio Irregular Sensors

Yuanfang Chen, Lei Shu, Mingchu Li, Ziqi Fan, Lei Wang, Takahiro Hara

Proc. of IEEE International Conference on Communications (ICC 2011)　2011/06　Research paper (international conference proceedings)

Sleep Scheduling towards Geographic Routing in Duty-cycled Sensor Networks with a Mobile Sink

Chunsheng Zhu, Laurence Tianruo Yang, Lei Shu, Lei Wang, Takahiro Hara

Proc. of IEEE Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON 2011)　2011/06　Research paper (international conference proceedings)

Sleep Scheduling towards Geographic Routing in Duty-cycled Sensor Networks

Chunsheng Zhu, Laurence Tianruo Yang, Lei Shu, Joel J, P. C. Rodrigues, Takahiro Hara

Proc. of IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS 2011)　2011/06　Research paper (international conference proceedings)

A kNN Query Processing Method in Mobile Ad Hoc Networks

Yuka Komai, Yuya Sasaki, Takahiro Hara, Shojiro Nishio

Proc. of International Conf. on Mobile Data Management (MDM 2011)　2011/06　Research paper (international conference proceedings)

アドホックネットワークにおける2フェーズTop-k検索手法

佐々木 勇和, 原 隆浩, 西尾 章治郎

2011/03　Research paper (other academic)

Quantifying Sensing Coverage and Data Delivery Delay in Mobile Sensor Networks

Takahiro Hara

Proc. of IEEE Wireless Communications and Networking Conference (WCNC 2011)　2011/03　Research paper (international conference proceedings)

A Node Deployment Strategy for Efficient Sensing with Mobile Sensors in Sparse Sensor Networks

Treeprapin Kriengsak, Kanzaki Akimitsu, Hara Takahiro, Nishio Shojiro

Information and Media Technologies　Vol. 6　No. 2　p. 595-609　2011

Semantic relatedness measurement based on Wikipedia link co-occurrence analysis

Masahiro Ito, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

International Journal of Web Information Systems　Vol. 7　No. 1　p. 44-61　2011　Research paper (scientific journal)

Security issues on outlier detection and countermeasure for distributed hierarchical wireless sensor networks

Yiying Zhang, Lin He, Lei Shu, Takahiro Hara, Shojiro Nishio

Advancements in Distributed Computing and Internet Technologies: Trends and Issues　p. 182-210　2011　Part of collection (book)

A node deployment strategy for efficient sensing with mobile sensors in sparse sensor networks

Kriengsak Treeprapin, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Journal of Information Processing　Vol. 19　p. 103-117　2011　Research paper (scientific journal)

Calculating Wikipedia article similarity using machine translation evaluation metrics

Maike Erdmann, Andrew Finch, Kotaro Nakayama, Eiichiro Sumita, Takahiro Hara, Shojiro Nishio

Proceedings - 25th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2011　p. 620-625　2011　Research paper (international conference proceedings)

Autonomous data gathering mechanism with transmission reduction for wireless sensor networks

Yoshiaki Taniguchi, Akimitsu Kanzaki, Naoki Wakamiya, Takahiro Hara

2011 International Conference on Communications, Computing and Control Applications, CCCA 2011　p. 1-6　2011　Research paper (international conference proceedings)

How different are preferences of children and adults on Web pages ?

Mayu Iwata, Takahiro Hara, Shojiro Nishio

Proceedings - 2011 International Conference on Network-Based Information Systems, NBiS 2011　p. 394-399　2011　Research paper (international conference proceedings)

携帯電話上での快適なWebページ提示に向けて

荒瀬 由紀, 原 隆浩, 西尾章治郎

人工知能学会誌　2010/09

A Search Method Using Dynamic Cluster in Peer-to-Peer Networks

Yukie Kobayashi, Toshiki Watanabe, Akimitsu Kanzaki, Tomoki Yoshihisa, Takahiro Hara, Shojiro Nishio

Journal of the Information Processing Society of Japan　Vol. 51　No. 3　p. 740-752　2010/03　Research paper (scientific journal)

タッチパネル搭載型携帯端末のためのWeb検索クエリ入力支援インタフェース

小牧 大治郎, 荒瀬 由紀, 原 隆浩, 服部 元, 滝嶋 康弘, 西尾 章治郎

データ工学と情報マネジメントに関するフォーラム (DEIMフォーラム2010) 論文集　2010/03　Research paper (other academic)

Cooperative caching by clients constructing a peer-to-peer network for push-based broadcast

Takahiro Hara, Kazuhiko Maeda, Yoshimasa Ishi, Wataru Uchida, Shojiro Nishio

DATA & KNOWLEDGE ENGINEERING　Vol. 69　No. 2　p. 229-247　2010/02　Research paper (scientific journal)

Web browser for children using bubble metaphor

Mayu Iwata, Yuki Arase, Takahiro Hara, Shojiro Nishio

International Journal of Web Information Systems　Vol. 6　No. 1　p. 55-73　2010　Research paper (scientific journal)

Web page adaptation and presentation for mobile phones

Yuki Arase, Takahiro Hara, Shojiro Nishio

Handheld Computing for Mobile Commerce: Applications, Concepts and Technologies　p. 240-262　2010　Part of collection (book)

Mining people's trips from large scale geo-tagged photos

Yuki Arase, Xing Xie, Takahiro Hara, Shojiro Nishio

MM'10 - Proceedings of the ACM Multimedia 2010 International Conference　p. 133-142　2010　Research paper (international conference proceedings)

A user location anonymization method for location based services in a real environment

Akiyoshi Suzuki, Mayu Iwata, Yuki Arase, Takahiro Hara, Xing Xie, Shojiro Nishio

GIS: Proceedings of the ACM International Symposium on Advances in Geographic Information Systems　p. 398-401　2010　Research paper (international conference proceedings)

Energy-efficient data gathering using sleep scheduling and spatial interpolation in wireless sensor networks

Shinya Kondo, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings - 13th International Conference on Network-Based Information Systems, NBiS 2010　p. 62-69　2010　Research paper (international conference proceedings)

Data replication for top-k query processing in mobile wireless sensor networks

Takahiro Hara, Ryo Hagihara, Shojiro Nishio

SUTC 2010 - 2010 IEEE International Conference on Sensor Networks, Ubiquitous, and Trustworthy Computing, UMC 2010 - 2010 IEEE International Workshop on Ubiquitous and Mobile Computing　p. 115-122　2010　Research paper (international conference proceedings)

Energy-efficient task scheduling and data aggregation techniques in wireless sensor networks for information explosion era

Akimitsu Kanzaki, Naoki Wakamiya, Takahiro Hara

Studies in Computational Intelligence　Vol. 278　p. 47-75　2010　Research paper (scientific journal)

Investigating Impact of Quorum Construction on Data Processing in Mobile Ad Hoc Networks

Takahiro Hara, Sanjay K. Madria, Shojiro Nishio

2010 24TH IEEE INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS (AINA)　p. 548-555　2010　Research paper (international conference proceedings)

A Children-Oriented Re-ranking Method for Web Search Engines

Mayu Iwata, Yuki Arase, Takahiro Hara, Shojiro Nishio

WEB INFORMATION SYSTEM ENGINEERING-WISE 2010　Vol. 6488　p. 225-+　2010　Research paper (international conference proceedings)

Research Issues on Mobile Sensor Networks

Chunsheng Zhu, Lei Shu, Takahiro Hara, Lei Wang, Shojiro Nishio

2010 5TH INTERNATIONAL ICST CONFERENCE ON COMMUNICATIONS AND NETWORKING IN CHINA (CHINACOM)　2010　Research paper (international conference proceedings)

Relation Extraction between Related Concepts by Combining Wikipedia and Web Information for Japanese Language

Masumi Shirakawa, Kotaro Nakayama, Eiji Aramaki, Takahiro Hara, Shojiro Nishio

INFORMATION RETRIEVAL TECHNOLOGY　Vol. 6458　p. 310-+　2010　Research paper (international conference proceedings)

Secured Two Phase Geographic Forwarding Protocol in Wireless Multimedia Sensor Networks

Taye Mulugeta, Lei Shu, Manfred Hauswirth, Min Chen, Takahiro Hara, Shojiro Nishio

2010 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE GLOBECOM 2010　2010　Research paper (international conference proceedings)

Global consistency management methods based on escrow approaches in mobile ad hoc networks

Takahiro Hara, Shojiro Nishio

MOBILE INFORMATION SYSTEMS　Vol. 6　No. 1　p. 5-26　2010　Research paper (scientific journal)

A top-k query method by estimating score distribution in mobile ad hoc networks

Yuya Sasaki, Ryo Hagihara, Takahiro Hara, Masako Shinohara, Shojiro Nishio

24th IEEE International Conference on Advanced Information Networking and Applications Workshops, WAINA 2010　p. 944-949　2010　Research paper (international conference proceedings)

Improving the Extraction of Bilingual Terminology from Wikipedia

Maike Erdmann, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

ACM TRANSACTIONS ON MULTIMEDIA COMPUTING COMMUNICATIONS AND APPLICATIONS　Vol. 5　No. 4　2009/10　Research paper (scientific journal)

Consistency Management Strategies for Data Replication in Mobile Ad Hoc Networks

Takahiro Hara, Sanjay Kumar Madria

IEEE TRANSACTIONS ON MOBILE COMPUTING　Vol. 8　No. 7　p. 950-967　2009/07　Research paper (scientific journal)

An Effective Mobile Sensor Control Method for Sparse Sensor Networks

Kriengsak Treeprapin, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

SENSORS　Vol. 9　No. 1　p. 327-354　2009/01　Research paper (scientific journal)

Wikipedia Mining Challenge for Realizing Early Profits, The Kick Off:Challenge for Realizing Early Profits, The Kick Off

NAKAYAMA Kotaro, ITO Masahiro, ERDMANN Maike, SHIRAKAWA Masumi, MICHISHITA Tomoyuki, HARA Takahiro, NISHIO Shojiro

Transactions of the Japanese Society for Artificial Intelligence　Vol. 24　No. 6　p. 549-557　2009

A replica relocation method for improving search efficiency in P2P networks

Toshiki Watanabe, Yong Zhao, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

1st International Conference on Advances in P2P Systems, AP2PS 2009　p. 13-18　2009　Research paper (international conference proceedings)

Investigation of children's characteristics for Web browsing

Mayu Iwata, Yuki Arase, Takahiro Hara, Shojiro Nishio

International Conference on Information and Knowledge Management, Proceedings　p. 91-94　2009　Research paper (international conference proceedings)

Keyword search considering user's preference in P2P networks

Tomomi Miyazaki, Toshiki Watanabe, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings of the 3rd International Conference on Ubiquitous Information Management and Communication, ICUIMC'09　p. 432-440　2009　Research paper (international conference proceedings)

A Content Clipping System for Web Browsing Using Cellular Phones

Kenji Ohnishi, Yuki Arase, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

2009 INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS: WAINA, VOLS 1 AND 2　p. 978-+　2009　Research paper (international conference proceedings)

An Efficient Node Deployment Strategy in Sparse Sensor Networks

Kriengsak Treeprapin, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

CISIS: 2009 INTERNATIONAL CONFERENCE ON COMPLEX, INTELLIGENT AND SOFTWARE INTENSIVE SYSTEMS, VOLS 1 AND 2　p. 1060-1065　2009　Research paper (international conference proceedings)

MotoBrowser: Enjoyable Browsing using Cellular Phones by "motoring" Web Pages

Yuki Arase, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

MDM: 2009 10TH INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT　p. 373-+　2009　Research paper (international conference proceedings)

User Profiling for Web Search Based on Biological Fluctuation

Yuki Arase, Takahiro Hara, Shojiro Nishio

HUMAN-COMPUTER INTERACTION, PT III　Vol. 5612　p. 239-247　2009　Research paper (international conference proceedings)

A Message Processing Method for Top-k Query for Traffic Reduction in Ad Hoc Networks

Ryo Hagihara, Masako Shinohara, Takahiro Hara, Shojiro Nishio

MDM: 2009 10TH INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT　p. 11-20　2009　Research paper (international conference proceedings)

A Data Transmission Method using Multicast in Mobile Ad Hoc Networks

Masako Shinohara, Takahiro Hara, Shojiro Nishio

MDM: 2009 10TH INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT　p. 232-237　2009　Research paper (international conference proceedings)

An Evaluation of Overhearing-based Data Transmission Reduction in Wireless Sensor Networks

Yuuki Iima, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

MDM: 2009 10TH INTERNATIONAL CONFERENCE ON MOBILE DATA MANAGEMENT　p. 519-524　2009　Research paper (international conference proceedings)

On a TDMA Slot Assignment Considering the Amount of Traffic in Wireless Sensor Networks

Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

2009 INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS: WAINA, VOLS 1 AND 2　p. 984-989　2009　Research paper (international conference proceedings)

Wikipedia Relatedness Measurement Methods and Influential Features

Kotaro Nakayama, Masahiro Ito, Takahiro Hara, Shojiro Nishio

2009 INTERNATIONAL CONFERENCE ON ADVANCED INFORMATION NETWORKING AND APPLICATIONS WORKSHOPS: WAINA, VOLS 1 AND 2　p. 738-+　2009　Research paper (international conference proceedings)

Overhearing-based Data Transmission Reduction for Periodical Data Gathering in Wireless Sensor Networks

Yuuki Iima, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

CISIS: 2009 INTERNATIONAL CONFERENCE ON COMPLEX, INTELLIGENT AND SOFTWARE INTENSIVE SYSTEMS, VOLS 1 AND 2　p. 1048-1053　2009　Research paper (international conference proceedings)

Update Propagation Strategies Considering Degree of Data Update in Peer-to-Peer Networks

Toshiki Watanabe, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

DATABASE SYSTEMS FOR ADVANCED APPLICATIONS, PROCEEDINGS　Vol. 5463　p. 328-333　2009　Research paper (international conference proceedings)

A game based approach to assign geographical relevance to web images

Yuki Arase, Xing Xie, Manni Duan, Takahiro Hara, Shojiro Nishio

WWW'09 - Proceedings of the 18th International World Wide Web Conference　p. 811-820　2009　Research paper (international conference proceedings)

P2Pネットワークにおけるデータ更新量を考慮した更新伝搬手法の提案

渡辺俊貴, 神崎映光, 原隆浩, 西尾章治郎

日本データベース学会論文誌　2008/12　Research paper (scientific journal)

非構造型P2Pネットワークにおける情報爆発を考慮した更新伝播に関する一考察

渡辺俊貴, 神崎映光, 原隆浩, 西尾章治郎

情報処理学会第70回全国大会論文集　2008/03　Research paper (other academic)

センサネットワークにおける通信傍受と空間的補間を用いた通信量削減について

飯間悠樹, 神崎映光, 原隆浩, 西尾章治郎

情報処理学会第70回全国大会論文集　2008/03　Research paper (other academic)

Wikipediaマイニングによる大規模Webオントロジの実現

中山 浩太郎, 原 隆浩, 西尾 章治郎

人工知能学会全国大会論文集　Vol. 8　No. 0　p. 96-96　2008

Extraction of bilingual terminology from a multilingual web-based encyclopedia

Maike Erdmann, Kotaro Nakayama, Takahiro Hara, Shojiro Nishio

Journal of Information Processing　Vol. 16　p. 68-79　2008　Research paper (scientific journal)

Data dissemination methods for time-constraint applications in mobile ad hoc networks

Takahiro Hara, Sanjay Kumar Madria

Journal of Interconnection Networks　Vol. 9　No. 4　p. 351-367　2008　Research paper (international conference proceedings)

Updated data dissemination for applications with time constraints in mobile ad hoc networks

Takahiro Hara, Sanjay Kumar Madria

Proceedings - International Conference on Advanced Information Networking and Applications, AINA　p. 1078-1085　2008　Research paper (international conference proceedings)

An update propagation strategy considering access frequency in peer-to-peer networks

Toshiki Watanabe, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

DATABASE SYSTEMS FOR ADVANCED APPLICATIONS　Vol. 4947　p. 661-669　2008　Research paper (international conference proceedings)

A web browsing system for cellular-phone users based on adaptive presentation

Yuki Arase, Takuya Maekawa, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

Universal Access in the Information Society　Vol. 6　No. 3　p. 259-271　2007/11　Research paper (international conference proceedings)

携帯電話を用いたWeb閲覧のためのコンテンツ適応的提示システム

荒瀬 由紀, 前川 卓也, 原 隆浩, 上向 俊晃, 西尾章治郎

情報処理学会論文誌　2006/12　Research paper (scientific journal)

Nine-Button Web Browsing System for Cellular Phone Users

Yuki Arase, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

2006/11　Research paper (international conference proceedings)

An information browsing system using a java-based cellular phone in a remote display environment

Takuya Maekawa, Toshiaki Uemukai, Takahiro Hara, Shojiro Nishio

Systems and Computers in Japan　Vol. 37　No. 10　p. 1-12　2006/09　Research paper (scientific journal)

小型端末を用いたWeb閲覧のための画像分類方式

前川 卓也, 原 隆浩, 西尾章治郎

日本データベース学会Letters　Vol. 5　No. 1　p. 125-128　2006/06　Research paper (scientific journal)

A Collaborative Web Browsing System for Multiple Mobile Users

Takuya Maekawa, Takahiro Hara, Shojiro Nishio

2006/03　Research paper (international conference proceedings)

Consistency management among replicas using a quorum system in ad hoc networks

Yohei Sawai, Masako Shinohara, Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings - IEEE International Conference on Mobile Data Management　Vol. 2006　2006　Research paper (international conference proceedings)

On TDMA slot assignment protocol considering the existence of unidirectional wireless links in ad hoc sensor networks

Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings - IEEE International Conference on Mobile Data Management　Vol. 2006　2006　Research paper (international conference proceedings)

Probabilistic replication based on access frequencies in unstructured peer-to-peer networks

Takahiro Hara, Yuki Kido, Shojiro Nishio

DATABASE AND EXPERT SYSTEMS APPLICATIONS, PROCEEDINGS　Vol. 4080　p. 791-800　2006　Research paper (scientific journal)

Update log dissemination in mobile ad hoc networks

Hideki Hayashi, Takahiro Hara, Shojiro Nishio

Proceedings - IEEE International Conference on Mobile Data Management　Vol. 2006　2006　Research paper (international conference proceedings)

A web browsing system based on adaptive presentation of web contents for cellular phones

Yuki Arase, Takuya Maekawa, Takahiro Hara, Toshiaki Uemukai, Shojiro Nishio

ACM International Conference Proceeding Series　Vol. 134　p. 86-89　2006　Research paper (international conference proceedings)

Image classification for mobile web browsing

Takuya Maekawa, Takahiro Hara, Shojiro Nishio

Proceedings of the 15th International Conference on World Wide Web　p. 43-52　2006　Research paper (international conference proceedings)

アドホックネットワークにおけるルーティングプロトコルを利用したトポロジ情報生成手法

谷口哲也, 神崎映光, 原 隆浩, 西尾章治郎

情報処理学会マルチメディア, 分散, 協調とモーバイルシンポジウム論文集　2005/07　Research paper (other academic)

An adaptive TDMA slot assignment protocol in ad hoc sensor networks

Akimitsu Kanzaki, Takahiro Hara, Shojiro Nishio

Proceedings of the ACM Symposium on Applied Computing　Vol. 2　p. 1160-1165　2005　Research paper (international conference proceedings)

アドホックセンサネットワークにおける無線リンクの片方向性を考慮したTDMAスロット割り当て手法

神崎映光, 原 隆浩, 西尾章治郎

情報処理学会マルチメディア通信と分散処理ワークショップ論文集　2004/12　Research paper (other academic)

A Java-based Information Browsing System in a Remote Display Environment

Takuya Maekawa, Toshiaki Uemukai, Takahiro Hara, Shojiro Nishio

Proc. of IEEE Int'l Conf. on E-Commerce Technology　2004/07　Research paper (international conference proceedings)

TDMA Slot Assignment Protocols Considering the Number of Nodes in Ad Hoc Networks

Akimitsu Kanzaki, Toshiaki Uemukai, Takahiro Hara, Shojiro Nishio

Journal of the Information Processing Society of Japan　2004/03　Research paper (scientific journal)

A Content Partitioning Method for Collaborative Browsing by Mobile Users

Takuya Maekawa, Toshiaki Uemukai, Takahiro Hara, Shojiro Nishio

Vol. 2　No. 4　p. 3-6　2004/03　Research paper (scientific journal)

" 3D-Raven ": A 3D framework for mobile device

NAKAYAMA Kotaro, HARA Takahiro, NISHIO Shojiro

Proceedings of the Annual Conference of the Institute of Image Electronics Engineers of Japan　Vol. 32　No. 0　p. 89-93　2004

Dynamic TDMA Slot Assignment in Ad Hoc Networks

Akimitsu Kanzaki, Toshiaki Uemukai, Takahiro Hara, Shojiro Nishio

2003/03　Research paper (international conference proceedings)

Scheduling correlated broadcast data considering access frequencies with temporal variations

W Uchida, T Hara, S Nishio

SECOND IEEE INTERNATIONAL SYMPOSIUM ON NETWORK COMPUTING AND APPLICATIONS, PROCEEDINGS　p. 89-96　2003　Research paper (international conference proceedings)