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Takeda Ryuu
武田 龍
Takeda Ryuu
武田 龍
The Institute of Scientific and Industrial Research,Associate Professor

keyword Speech recognition,Speech information processing

Research History 5

  1. 2019/12 - Present
    Osaka University The Institute of Scientific and Industrial Research

  2. 2018/10 - 2022/03
    JSTさきがけ 「社会デザイン」領域 研究者(兼任)

  3. 2014/10 - 2019/12
    Osaka University The Institute of Scientific and Industrial Research

  4. 2017/09 - 2018/08
    Carnegie Mellon University Language Technologies Institute Visiting Researcher

  5. 2011/04 - 2014/09
    Hitachi, Ltd., Central Research Laboratory

Education 3

  1. Kyoto University Graduate School of Informatics Department of Intelligence Science and Technology

    2008/04 - 2011/03

  2. Kyoto University Graduate School of Informatics

    2006/04 - 2008/03

  3. Kyoto University Faculty of Engineering School of Informatics & Mathematical Science

    2002/04 - 2006/03

Committee Memberships 2

  1. 情報処理学会 論文誌ジャーナル/JIP編集委員会 委員

    2021/06 - 2025/05

  2. IEEE SPS Kansai Chapter Treasurer

    2017/01 - 2018/12

Professional Memberships 3

  1. 日本音響学会

  2. 情報処理学会

  3. IEEE

Awards 9

  1. Best Research Paper

    Ryu Takeda, Hokuto Munakata, Kazunori Komatani The 12th International Joint Conference on Knowledge Graphs 2023/12

  2. Yamashita SIG Research Award

    IPSJ 2018/03

  3. 第29回 テレコムシステム技術賞

    Masahito Togami, Yohei Kawaguchi, Ryu Takeda, Yasunari Obuchi, Nobuo Nukaga 電気通信普及財団賞 2014/03

  4. 2010年度研究会優秀賞

    松山 匡子, 駒谷 和範, 武田 龍, 尾形 哲也, 奥乃 博 人工知能学会 2011/06

  5. 2008年度 研究会優秀賞

    村田 和真, 中臺 一博, 武田 龍, 奥乃 博, 長谷川 雄二, 辻野 広司 人工知能学会 2009/06

  6. Award for Entertainment Robots and Systems (NTF Award) Nomination Finalist

    Kazumasa Murata, Kazuhiro Nakadai, Kazuyoshi Yoshii, Ryu Takeda, Toyotaka Torii, Hiroshi G. Okuno, Yuji Hasegawa, Hiroshi Tsujino 2008

  7. Award for Entertainment Robots and Systems (NTF Award) Nomination Finalist

    Takeshi Mizumoto, Ryu Takeda, Kazuyoshi Yoshii, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno 2008

  8. RSJ/SICE AWARD for IROS2006 Best Paper Nomination Finalist

    Ryu Takeda, Shun'ichi Yamamoto, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno 2007

  9. IEEE Robotics and Automation Society Japan Chapter Young Award

    Ryu Takeda, Shun'ichi Yamamoto, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno 2006

Papers 81

  1. Learning to Ask Efficiently in Dialogue: Reinforcement Learning Extensions for Stream-based Active Learning

    Issei Waki, Ryu Takeda, Kazunori Komatani

    Proceedings of Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGDIAL) p. 426-435 2025/08 Research paper (international conference proceedings)

  2. Developing Classifiers for Affirmative and Negative User Responses with Limited Target Domain Data for Dialogue System Development Tools

    Yunosuke Kubo, Ryo Yanagimoto, Mikio Nakano, Kenta Yamamoto, Ryu Takeda, Kazunori Komatani

    Proceedings of International Workshop on Spoken Dialogue Systems (IWSDS) p. 309-317 2025/05 Research paper (international conference proceedings)

  3. Analysis of Voice Activity Detection Errors in API-based Streaming ASR for Human-Robot Dialogue

    Kenta Yamamoto, Ryu Takeda, Kazunori Komatani

    Proceedings of International Workshop on Spoken Dialogue Systems (IWSDS) p. 245-253 2025/05 Research paper (international conference proceedings)

  4. ユーザ返答パターンを用いた音節列と単語境界の同時推定に基づく音声対話中の未知語認識

    大塩幹, 武田龍, 駒谷和範

    電子情報通信学会論文誌 D Vol. 4 p. 128-137 2025/04 Research paper (scientific journal)

  5. Scale-invariant Online Voice Activity Detection under Various Environments

    Ryu Takeda, Kazunori Komatani

    Proceedings of Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC) p. 1-6 2024/12/03 Research paper (international conference proceedings)

    Publisher: IEEE
  6. Collecting Human-Agent Dialogue Dataset with Frontal Brain Signal toward Capturing Unexpressed Sentiment.

    Shun Katada, Ryu Takeda, Kazunori Komatani

    LREC/COLING p. 3518-3528 2024/05 Research paper (international conference proceedings)

  7. Toward OOV-word Acquisition during Spoken Dialogue using Syllable-based ASR and Word Segmentation

    Ryu Takeda, Kazunori Komatani

    Proceedings of International Workshop on Spoken Dialogue Systems Technology (IWSDS) 2024/03 Research paper (international conference proceedings)

  8. Link Prediction Based on Large Language Model and Knowledge Graph Retrieval under Open-World and Resource-Restricted Environment

    Ryu Takeda, Hokuto Munakata, Kazunori Komatani

    Proceedings of International Joint Conference on Knowledge Graphs 2023/12 Research paper (international conference proceedings)

  9. Knowledge Graph Augmentation with Entity Identification for Improving Knowledge Graph Completion Performance

    Shuichi Chikatsuji, Kenta Yamamoto, Ryu Takeda, Kazunori Komatani

    Proceedings of Pacific Rim International Conference on Artificial Intelligence p. 480-487 2023/11 Research paper (international conference proceedings)

  10. Out-Of-Vocabulary Word Detection in Spoken Dialogues Based on Joint Decoding with User Response Patterns

    Miki Oshio, Hokuto Munakata, Ryu Takeda, Kazunori Komatani

    Proceedings of Asia Pacific Signal and Information Processing Association Annual Summit and Conference p. 1753-1759 2023/11 Research paper (international conference proceedings)

  11. Flexible Evidence Model to Reduce Uncertainty Mismatch Between Speech Enhancement and ASR Based on Encoder-Decoder Architecture

    Ryu Takeda, Yui Sudo, Kazunori Komatani

    Proceedings of Asia Pacific Signal and Information Processing Association Annual Summit and Conference p. 1830-1837 2023/11 Research paper (international conference proceedings)

  12. Recursive Sound Source Separation with Deep Learning-based Beamforming for Unknown Number of Sources

    Hokuto Munakata, Ryu Takeda, Kazunori Komatani

    Proceedings of Interspeech p. 1688-1692 2023/08 Research paper (international conference proceedings)

    Publisher: ISCA
  13. Meta-domain Adversarial Contrastive Learning for Alleviating Individual Bias in Self-sentiment Predictions

    Zhi Li, Ryu Takeda, Takahiro Hara

    Proceedings of Interspeech p. 2428-2432 2023/08 Research paper (international conference proceedings)

  14. Joint Separation and Localization of Moving Sound Sources Based on Neural Full-Rank Spatial Covariance Analysis

    Hokuto Munakata, Yoshiaki Bando, Ryu Takeda, Kazunori Komatani, Masaki Onishi

    IEEE Signal Processing Letters Vol. 30 p. 384-388 2023/04 Research paper (scientific journal)

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
  15. Analyzing Differences in Subjective Annotations by Participants and Third-party Annotators in Multimodal Dialogue Corpus

    Kazunori Komatani, Ryu Takeda, Shogo Okada

    Proceedings of the 24th Meeting of the Special Interest Group on Discourse and Dialogue p. 104-113 2023 Research paper (international conference proceedings)

    Publisher: Association for Computational Linguistics
  16. Empirical Sampling from Latent Utterance-wise Evidence Model for Missing Data ASR based on Neural Encoder-Decoder Model

    Ryu Takeda, Yui Sudo, Kazuhiro Nakadai, Kazunori Komatani

    Proceedings of Interspeech p. 3789-3793 2022/09/21 Research paper (international conference proceedings)

    Publisher: ISCA
  17. Training Data Generation with DOA-based Selecting and Remixing for Unsupervised Training of Deep Separation Models

    Hokuto Munakata, Ryu Takeda, Kazunori Komatani

    Proceedings of Interspeech p. 861-865 2022/09/19 Research paper (international conference proceedings)

    Publisher: ISCA
  18. Lexical Acquisition during Dialogues through Implicit Confirmation.

    Kazunori Komatani, Kohei Ono, Ryu Takeda, Eric Nichols, Mikio Nakano

    Dialogue and Discourse Vol. 13 No. 1 p. 96-122 2022/06 Research paper (scientific journal)

  19. Design Guidelines for Developing Systems for Dialogue System Competitions

    Takeda Ryu, Komatani Kazunori, Nakashima Keisuke, Nakano Mikio

    Transactions of the Japanese Society for Artificial Intelligence Vol. 37 No. 3 p. IDS-B_1-9 2022/05 Research paper (scientific journal)

    Publisher: The Japanese Society for Artificial Intelligence
  20. Multiple-Embedding Separation Networks: Sound Class-Specific Feature Extraction for Universal Sound Separation

    Hokuto Munakata, Ryu Takeda, Kazunori Komatani

    Proceedings of 13th Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) p. 961-967 2021/12 Research paper (international conference proceedings)

    Publisher: IEEE
  21. Spatial Normalization to Reduce Positional Complexity in Direction-aided Supervised Binaural Sound Source Separation

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani

    Proceedings of 13th Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA) p. 248-253 2021/12 Research paper (international conference proceedings)

    Publisher: IEEE
  22. Design guidelines for developing systems for dialogue system competitions

    Kazunori Komatani, Ryu Takeda, Keisuke Nakashima, Mikio Nakano

    Proceedings of International Workshop on Spoken Dialogue Systems (IWSDS) 2021/11 Research paper (international conference proceedings)

  23. Age Estimation with Speech-age Model for Heterogeneous Speech Datasets

    Ryu Takeda, Kazunori Komatani

    Proceedings of Interspeech p. 4164-4168 2021/09 Research paper (international conference proceedings)

    Publisher: ISCA
  24. Investigation of Node Pruning Criteria for Neural Networks Model Compression with Non-Linear Function and Non-Uniform Network Topology

    Kazuhiro Nakadai, Yosuke Fukumoto, Ryu Takeda

    Proceedings of IEEE Spoken Language Technology Workshop (SLT) p. 117-124 2021/01 Research paper (international conference proceedings)

  25. Frame-Wise Online Unsupervised Adaptation of DNN-HMM Acoustic Model from Perspective of Robust Adaptive Filtering

    Ryu Takeda, Kazunori Komatani

    Proceedings of Interspeech p. 1291-1295 2020/10/25 Research paper (international conference proceedings)

    Publisher: ISCA
  26. Attribute Prediction of Unknown Lexical Entities based on Mixture of Bayesian Segmentation Model

    Ryu Takeda, Kazunori Komatani

    Life Long Learning for Spoken Language Systems Workshop 2019/12 Research paper (international conference proceedings)

  27. Word Segmentation from Phoneme Sequences based on Pitman-Yor Semi-Markov Model Exploiting Subword Information

    Ryu Takeda, Kazunori Komatani, Alexander I. Rudnicky

    Proceedings of IEEE Spoken Language Technology Workshop (SLT) p. 763-770 2018/12 Research paper (international conference proceedings)

  28. Multi-timescale Feature-extraction Architecture of Deep Neural Networks for Acoustic Model Training from Raw Speech Signal

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani

    Proceedings of IEEE International Conference on Intelligent Robots and Systems (IROS) p. 2503-2510 2018/10 Research paper (international conference proceedings)

  29. Unsupervised Adaptation of Neural Networks for Discriminative Sound Source Localization with Eliminative Constraint

    Ryu Takeda, Yoshiki Kudo, Kazuki Takashima, Yoshifumi Kitamura, Kazunori Komatani

    Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) p. 3514-3518 2018/04 Research paper (international conference proceedings)

  30. Predicting When Drivers Need AR Navigation

    Kazuaki Yamabe, Chihiro Suga, Teruhisa Misu, Ryu Takeda, Kazunori Komatani

    Proceedings of The 8th Biennial Workshop on DSP for In-Vehicle and Mobile Systems 2018 Research paper (international conference proceedings)

  31. Proposal of Implicit Confirmation toward Lexical Acquisition during Dialogues

    Ono Kohei, Takeda Ryu, Nichols Eric, Nakano Mikio, Komatani Kazunori

    Transactions of the Japanese Society for Artificial Intelligence Vol. 33 No. 1 p. DSH-E_1-10 2018 Research paper (scientific journal)

    Publisher: The Japanese Society for Artificial Intelligence
  32. Unsupervised Segmentation of Phoneme Sequences based on Pitman-Yor Semi-Markov Model using Phoneme Length Context

    Ryu Takeda, Kazunori Komatani

    Proceedings of the 8th International Joint Conference on Natural Language Processing (IJCNLP) p. 243-252 2017/11

  33. Acoustic Model Training based on Node-wise Weight Boundary Model for Fast and Small-footprint Deep Neural Networks

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani

    Computer Speech and Language Vol. 46 p. 461-480 2017/11 Research paper (scientific journal)

  34. Node Pruning based on Entropy of Weights and Node Activity for Small-footprint Acoustic Model based on Deep Neural Networks

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani

    Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH) Vol. 2017-August p. 1636-1640 2017/08 Research paper (international conference proceedings)

  35. Unsupervised Adaptation of Deep Neural Networks for Sound Source Localization using Entropy Minimization

    Ryu Takeda, Kazunori Komatani

    Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) p. 2217-2221 2017/03 Research paper (international conference proceedings)

  36. Size effect on call properties of japanese tree frogs revealed by audio-processing technique

    Ikkyu Aihara, Ryu Takeda, Takeshi Mizumoto, Takuma Otsuka, Hiroshi G. Okuno

    Journal of Robotics and Mechatronics Vol. 29 No. 1 p. 247-254 2017/02 Research paper (scientific journal)

  37. Noise-robust MUSIC-based Sound Source Localization using Steering Vector Transformation for Small Humanoids

    Ryu Takeda, Kazunori Komatani

    Journal of Robotics and Mechatronics Vol. 29 No. 1 p. 26-36 2017/02 Research paper (scientific journal)

  38. Lexical Acquisition through Implicit Confirmations over Multiple Dialogues

    Kohei Ono, Ryu Takeda, Eric Nichols, Mikio Nakano, Kazunori Komatani

    Proceedings of the 18th Annual Meeting of the Special Interest Group on Discourse and Dialogue (SIGDIAL) p. 50-59 2017 Research paper (international conference proceedings)

  39. Bayesian Language Model based on Mixture of Segmental Contexts for Spontaneous Utterances with Unexpected Words

    Ryu Takeda, Kazunori Komatani

    Proceedings of the 26th International Conference on Computational Linguistics (COLING) p. 161-170 2016/12 Research paper (international conference proceedings)

  40. Discriminative Multiple Sound Source Localization based on Deep Neural Networks using Independent Location Model

    Ryu Takeda, Kazunori Komatani

    Proceedings of IEEE Workshop on Spoken Language Technology (SLT) p. 603-609 2016/12 Research paper (international conference proceedings)

  41. Sound Source Localization based on Deep Neural Networks with Directional Activate Function exploiting Phase Information

    Ryu Takeda, Kazunori Komatani

    Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) p. 405-409 2016/03 Research paper (international conference proceedings)

  42. Toward Lexical Acquisition during Dialogues through Implicit Confirmation for Closed-Domain Chatbots

    Kohei Ono, Ryu Takeda, Eric Nichols, Mikio Nakano, Kazunori Komatani

    Proceedings of Second Workshop on Chatbots and Conversational Agent Technologies (WOCHAT) 2016 Research paper (international conference proceedings)

  43. Acoustic Model Training based on Node-wise Weight Boundary Model increasing Speed of Discrete Neural Networks

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani

    Proceedings of IEEE Workshop on Automatic Speech Recognition and Understanding (ASRU) p. 52-58 2015/12 Research paper (international conference proceedings)

  44. Performance comparison of MUSIC-based sound localization methods on small humanoid under low SNR conditions

    Ryu Takeda, Kazunori Komatani

    Proceedings of IEEE-RAS International Conference on Humanoid Robots (Humanoids) p. 859-865 2015/11 Research paper (international conference proceedings)

  45. Boundary Contraction Training for Acoustic Models based on Discrete Deep Neural Networks

    Ryu Takeda, Naoyuki Kanda, Nobuo Nukaga

    Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH) p. 1063-1067 2014 Research paper (international conference proceedings)

  46. Noise robust speaker verification with delta cepstrum normalization

    Naoyuki Kanda, Ryu Takeda, Yasunari Obuchi

    Proceedings of the Annual Conference of the International Speech Communication Association (INTERSPEECH) p. 3112-3116 2013 Research paper (international conference proceedings)

  47. Optimized speech dereverberation from probabilistic perspective for time varying acoustic transfer function

    Masahito Togami, Yohei Kawaguchi, Ryu Takeda, Yasunari Obuchi, Nobuo Nukaga

    IEEE Transactions on Audio, Speech and Language Processing Vol. 21 No. 7 p. 1369-1380 2013 Research paper (scientific journal)

  48. Noise suppression method for preprocessor of time-lag speech recognition system based on bidirectional optimally modified log spectral amplitude estimation

    Yasunari Obuchi, Ryu Takeda, Masahito Togami

    Acoustical Science and Technology Vol. 34 No. 2 p. 133-141 2013 Research paper (scientific journal)

  49. Elastic spectral distortion for low resource speech recognition with deep neural networks

    Naoyuki Kanda, Ryu Takeda, Yasunari Obuchi

    Proceedings of IEEE Workshop on Automatic Speech Recognition and Understanding (ASRU) p. 309-314 2013 Research paper (international conference proceedings)

  50. Efficient Blind Dereverberation and Echo Cancellation based on Independent Component Analysis for Actual Acoustic Signals

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Neural Computation Vol. 24 No. 1 p. 234-272 2012

  51. Multichannel speech dereverberation and separation with optimized combination of linear and non-linear filtering

    Masahito Togami, Yohei Kawaguchi, Ryu Takeda, Yasunari Obuchi, Nobuo Nukaga

    Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) p. 4057-4060 2012 Research paper (international conference proceedings)

  52. Using rhythmic features for Japanese spoken term detection

    Naoyuki Kanda, Ryu Takeda, Yasunari Obuchi

    Proceedings of IEEE Workshop on Spoken Language Technology (SLT) p. 170-175 2012 Research paper (international conference proceedings)

  53. Sound imaging of nocturnal animal calls in their natural habitat

    Takeshi Mizumoto, Ikkyu Aihara, Takuma Otsuka, Ryu Takeda, Kazuyuki Aihara, Hiroshi G. Okuno

    Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology Vol. 197 No. 9 p. 915-921 2011/09 Research paper (scientific journal)

  54. Complex and transitive synchronization in a frustrated system of calling frogs (vol 83, artno 049903, 2011)

    Ikkyu Aihara, Ryu Takeda, Takeshi Mizumoto, Takuma Otsuka, Toru Takahashi, Hiroshi G. Okuno, Kazuyuki Aihara

    PHYSICAL REVIEW E Vol. 83 No. 4 2011/04

  55. Evaluation of Spoken Dialogue System that uses Utterance Timing to Interpret User Utterances

    Kazunori Komatani, Kyoko Matsuyama, Ryu Takeda, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of the Paralinguistic Information and its Integration in Spoken Dialogue Systems Workshop 2011

    Publisher: Springer Science $\mathplus$ Business Media
  56. Complex and transitive synchronization in a frustrated system of calling frogs

    Ikkyu Aihara, Ryu Takeda, Takeshi Mizumoto, Takuma Otsuka, Toru Takahashi, Hiroshi G. Okuno, Kazuyuki Aihara

    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics Vol. 83 No. 3 2011 Research paper (scientific journal)

  57. Design and implementation of selectable sound separation on the texai telepresence system using HARK

    Takeshi Mizumoto, Kazuhiro Nakadai, Takami Yoshida, Ryu Takeda, Takuma Otsuka, Toru Takahashi, Hiroshi G. Okuno

    Proceedings of IEEE International Conference on Robotics and Automation (ICRA) p. 2130-2137 2011 Research paper (international conference proceedings)

  58. Bidirectional OM-LSA speech estimator for noise robust speech recognition

    Yasunari Obuchi, Ryu Takeda, Masahito Togami

    Proceedings of IEEE Workshop on Automatic Speech Recognition and Understanding (ASRU) p. 173-178 2011 Research paper (international conference proceedings)

  59. Speedup and performance improvement of ICA-based robot audition by parallel and resampling-based block-wise processing

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) p. 1949-1956 2010/10 Research paper (international conference proceedings)

  60. Upper-limit evaluation of robot audition based on ICA-BSS in multi-source, barge-in and highly reverberant conditions

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE International Conference on Robotics and Automation (ICRA) p. 4366-4371 2010/03 Research paper (international conference proceedings)

  61. Analyzing user utterances in barge-in-able spoken dialogue system for improving identification accuracy

    Kyoko Matsuyama, Kazunori Komatani, Ryu Takeda, Toru Takahashi, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of the 11th Annual Conference of the International Speech Communication Association (INTERSPEECH) p. 3050-3053 2010 Research paper (international conference proceedings)

  62. Automatic estimation of reverberation time with robot speech to improve ICA-based robot audition

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of the 9th IEEE-RAS International Conference on Humanoid Robots (Humanoids) p. 250-255 2009/12 Research paper (international conference proceedings)

  63. Step-size parameter adaptation of multi-channel semi-blind ICA with piecewise linear model for barge-in-able robot audition

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) p. 2277-2282 2009/10 Research paper (international conference proceedings)

  64. ICA-based efficient blind dereverberation and echo cancellation method for barge-in-able robot audition

    Ryu Takeda, Kazuhiro Nakadai, Toru Takahashi, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) p. 3677-3680 2009/04 Research paper (international conference proceedings)

  65. Synchronization in Frustrated Calling Behavior of Japanese Tree Frogs

    Ikkyu Aihara, Ryu Takeda, Takeshi Mizumoto, Takuma Otsuka, Toru Takahashi, Hiroshi G. Okuno

    Conference on Dynamics in Systems Biology 2009 Research paper (international conference proceedings)

  66. Musical Beat-Tracking for Robots and Its Application to A Music Robot

    MURATA Kazumasa, NAKADAI Kazuhiro, TAKEDA Ryu, OKUNO Hiroshi G., HASEGAWA Yuji, TSUJINO Hiroshi

    Journal of the Robotics Society of Japan Vol. 27 No. 7 p. 793-801 2009 Research paper (scientific journal)

    Publisher: The Robotics Society of Japan
  67. Robot Audition based on Multiple-Input Independent Component Analysis for Recognizing Barge-In Speech under Reverberation

    TAKEDA Ryu, NAKADAI Kazuhiro, TAKAHASHI Toru, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Journal of the Robotics Society of Japan Vol. 27 No. 7 p. 782-792 2009 Research paper (scientific journal)

    Publisher: The Robotics Society of Japan
  68. Barge-in-able robot audition based on ICA and missing feature theory under semi-blind situation

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) p. 1718-1723 2008/09 Research paper (international conference proceedings)

  69. Robot Audition using an Adaptive Filter Based on Independent Component Analysis

    TAKEDA Ryu, NAKADAI Kazuhiro, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Journal of the Robotics Society of Japan Vol. 26 No. 6 p. 529-536 2008 Research paper (scientific journal)

    Publisher: The Robotics Society of Japan
  70. A robot uses its own microphone to synchronize its steps to musical beats while scatting and singing

    Kazumasa Murata, Kazuhiro Nakadai, Kazuyoshi Yoshii, Ryu Takeda, Toyotaka Torii, Hiroshi G. Okuno, Yuji Hasegawa, Hiroshi Tsujino

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) p. 2459-2464 2008 Research paper (international conference proceedings)

  71. A robot singer with music recognition based on real-time beat tracking

    Kazumasa Murata, Kazuhiro Nakadai, Kazuyoshi Yoshii, Ryu Takeda, Toyotaka Torii, Hiroshi G. Okuno, Yuji Hasegawa, Hiroshi Tsujino

    Proceedings of the 9th International Conference on Music Information Retrieval (ISMIR) p. 199-204 2008 Research paper (international conference proceedings)

  72. A beat-tracking robot for human-robot interaction and its evaluation

    Kazumasa Murata, Kazuhiro Nakadai, Ryu Takeda, Hiroshi G. Okuno, Toyotaka Torh, Yuji Hasegawa, Hiroshi Tsujino

    Proceedings of the 8th IEEE-RAS International Conference on Humanoid Robots (Humanoids) p. 79-84 2008 Research paper (international conference proceedings)

  73. A robot listens to music and counts its beats aloud by separating music from counting voice

    Takeshi Mizumoto, Ryu Takeda, Kazuyoshi Yoshii, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) p. 1538-1543 2008 Research paper (international conference proceedings)

  74. Exploiting known sound source signals to improve ICA-based robot audition in speech separation and recognition

    Ryu Takeda, Kazuhiro Nakadai, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE International Conference on Intelligent Robots and Systems (IROS) p. 1757-1762 2007/10 Research paper (international conference proceedings)

  75. Evaluation of two simultaneous continuous speech recognition with ICA BSS and MFT-based ASR

    Ryu Takeda, Shun'ichi Yamamoto, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Lecture Notes in Computer Science Vol. 4570 LNAI p. 384-394 2007/06 Research paper (international conference proceedings)

  76. Improving speech recognition of two simultaneous speech signals by integrating ICA BSS and automatic missing feature mask generation

    Ryu Takeda, Shun'ichi Yamamoto, Kazunori Komatoni, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of the 9th International Conference on Spoken Language Processing (ICSLP/INTERSPEECH) p. 2302-2305 2006/09 Research paper (international conference proceedings)

  77. Missing-feature based speech recognition for two simultaneous speech signals separated by ICA with a pair of humanoid ears

    Ryu Takeda, Shun'ichi Yamamoto, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of IEEE International Conference on Intelligent Robots and Systems (IROS) p. 878-885 2006/09 Research paper (international conference proceedings)

  78. Leak Energy based Missing Feature Mask Generation for ICA and GSS and Its Evaluation with Simultaneous Speech Recognition

    Shun'ichi Yamamoto, Ryu Takeda, Kazuhiro Nakadai, Mikio Nakano, Hiroshi Tsujino, Jean-Marc Valin, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Proceedings of ISCA Tutorial and Research Workshop on Statistical and Perceptual Audition (SAPA) p. 42-47 2006 Research paper (international conference proceedings)

    Publisher: ISCA
  79. Improving Location-Based Speech Recognition of Simultaneous Speech Signals by Parameter Optimization with Genetic Algorithm

    YAMAMOTO Shunichi, NAKADAI Kazuhiro, NAKANO Mikio, TSUJINO Hiroshi, VALIN Jean-Marc, TAKEDA Ryu, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Human interface Vol. 8 No. 2 p. 203-212 2006 Research paper (scientific journal)

    Publisher:
  80. Genetic algorithm-based improvement of robot hearing capabilities in separating and recognizing simultaneous speech signals

    Shun'ichi Yamamoto, Kazuhiro Nakadai, Mikio Nakano, Hiroshi Tsujino, Jean Marc Valin, Ryu Takeda, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Vol. 4031 LNAI p. 207-217 2006 Research paper (international conference proceedings)

  81. Recognition of simultaneous speech by estimating reliability of separated signals for robot audition

    Shun'ichi Yamamoto, Ryu Takeda, Kazuhiro Nakadai, Mikio Nakano, Hiroshi Tsujino, Jean Marc Valin, Kazunori Komatani, Tetsuya Ogata, Hiroshi G. Okuno

    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) Vol. 4099 LNAI p. 484-494 2006 Research paper (international conference proceedings)

Misc. 40

  1. 物体検出器により得た確信度が対話システム性能に与える影響

    谷口 琉聖, 武田 龍, 駒谷 和範, 翠 輝久, 細見 直希, 山田 健太郎

    人工知能学会研究会資料 言語・音声理解と対話処理研究会 Vol. 96 2022/12/01

    Publisher: 一般社団法人 人工知能学会
  2. マルチモーダル対話コーパスに対する主観的アノテーション結果に関する分析

    駒谷 和範, 武田 龍, 岡田 将吾

    人工知能学会研究会資料 言語・音声理解と対話処理研究会 Vol. 96 2022/12/01

    Publisher: 一般社団法人 人工知能学会
  3. 不完全な物体検出結果に基づく対話を通じた目的地推定のための質問選択

    時末, 卓幹, 武田, 龍, 駒谷, 和範, 翠, 輝久, 細見, 直希, 山田, 健太郎

    第84回全国大会講演論文集 Vol. 2022 No. 1 p. 103-104 2022/02/17

  4. Vocal Effortの変動に頑健な話者識別のためのフィルタバンク特徴量の設計

    吉田, 朋矢, 生嶋, 竜実, 武田, 龍, 駒谷, 和範

    第84回全国大会講演論文集 Vol. 2022 No. 1 p. 343-344 2022/02/17

  5. 対話システムにおけるマルチモーダル情報を用いた自己開示の可否判断

    奥野, 尚己, 武田, 龍, 駒谷, 和範

    第84回全国大会講演論文集 Vol. 2022 No. 1 p. 167-168 2022/02/17

  6. Data Augmentation Using Spectral Structure for Supervised Monaural Source Separation of Frog Choruses

    IKUSHIMA Tatsumi, TAKEDA Ryu, AIHARA Ikkyu, KOMATANI Kazunori

    Proceedings of the Annual Conference of JSAI Vol. JSAI2022 p. 2O4GS705-2O4GS705 2022

    Publisher: The Japanese Society for Artificial Intelligence
  7. System Utterance Selection Considering Consistency between System Utterances with Deep Reinforcement Learning

    JSAI Technical Report, SIG-SLUD Vol. 93 p. 62-67 2021/11/20

    Publisher: The Japanese Society for Artificial Intelligence
  8. Constructing a rule- and example-based dialogue system that guides user utterances

    JSAI Technical Report, SIG-SLUD Vol. 93 p. 125-130 2021/11/20

    Publisher: The Japanese Society for Artificial Intelligence
  9. システム発話間の内容的整合性を用いた強化学習に基づく発話選択

    黒田 佑樹, 武田 龍, 駒谷 和範

    第83回全国大会講演論文集 Vol. 2021 No. 1 p. 275-276 2021/03/04

  10. モノラル音源分離のための音源間の類似度に基づく学習用混合信号の選択

    宗像 北斗, 武田 龍, 駒谷 和範

    第83回全国大会講演論文集 Vol. 2021 No. 1 p. 231-232 2021/03/04

  11. 教師ありモノラル音声分離のための残響音声データ内の単一話者区間を活用した転移学習

    生嶋 竜実, 武田 龍, 駒谷 和範

    第83回全国大会講演論文集 Vol. 2021 No. 1 p. 229-230 2021/03/04

  12. 対話システムにおける適応的発話選択のためのユーザ状態の設計と推定

    奥野 尚己, 武田 龍, 駒谷 和範

    第82回全国大会講演論文集 Vol. 2020 No. 1 p. 65-66 2020/02/20

  13. Design of System Dialogue Act Set based on Dialogue Corpus

    Vol. 87 p. 101-103 2019/12/02

    Publisher: 人工知能学会
  14. Use of Dialogue History for User's Interest Level Estimation Based on Multimodal Information

    NISHIMOTO Haruto, TAKEDA Ryu, KOMATANI Kazunori

    Proceedings of the Annual Conference of JSAI Vol. 2019 No. 0 p. 4F2OS11a05-4F2OS11a05 2019

    Publisher: The Japanese Society for Artificial Intelligence
  15. Response Timing Estimation Using Dialogue Situations for Spoken Dialogue Systems

    AKAI Genki, TAKEDA Ryu, KOMATANI Kazunori

    Proceedings of the Annual Conference of JSAI Vol. 2018 No. 0 p. 2N102-2N102 2018

    Publisher: The Japanese Society for Artificial Intelligence
  16. 様々な情報提示に対する運転者の注意散漫度合を測定する枠組みの検討

    山部 和章, 武田 龍, 翠 輝久, 駒谷 和範

    人工知能学会全国大会論文集 Vol. 2017 No. 0 p. 4I13-4I13 2017

    Publisher: 一般社団法人 人工知能学会
  17. 対話中の未知語獲得のための正しいクラスに基づく暗黙的確認要求の抽出

    大野 航平, 武田 龍, 中野 幹生, ニコルズ エリック, 駒谷 和範

    人工知能学会全国大会論文集 Vol. 2017 No. 0 p. 1B1OS25a2-1B1OS25a2 2017

    Publisher: 一般社団法人 人工知能学会
  18. マルチモーダル情報からの運転者の内部状態の推定

    梶野 尊弘, 武田 龍, 小路 悠介, 駒谷 和範

    第78回全国大会講演論文集 Vol. 2016 No. 1 p. 139-140 2016/03/10

  19. 雑談対話における未知語や属性の獲得のための質問生成

    大野 航平, 武田 龍, エリック ニコルズ, 中野 幹生, 駒谷 和範

    第78回全国大会講演論文集 Vol. 2016 No. 1 p. 549-550 2016/03/10

  20. 対話中に現れる未知インスタンスのオントロジーを用いたクラス同定

    中野 領祐, 武田 龍, 駒谷 和範

    第77回全国大会講演論文集 Vol. 2015 No. 1 p. 135-136 2015/03/17

  21. Automatic Speech Recognition using Throat Microphone under Highly-Noisy Environments

    Vol. 19 No. 2 p. 182-186 2014

    Publisher: 環境システム計測制御学会
  22. Deep Neural Networkに基づく日本語音声認識の基礎評価

    神田直之, 武田龍, 大淵康成

    研究報告音声言語情報処理(SLP) Vol. 2013 No. 8 p. 1-6 2013/07/18

    Publisher: 一般社団法人情報処理学会
  23. Speech Recognition under Noisy Environment using Bidirectional OM-LSA Noise Suppression

    OBUCHI Yasunari, TOGAMI Masahito, TAKEDA Ryu

    Technical report of IEICE. EA Vol. 111 No. 490 p. 37-42 2012/03/09

    Publisher: The Institute of Electronics, Information and Communication Engineers
  24. Spoken Dialogue System that Uses Information on Locutionary Acts to Interpret User Utterances

    Vol. 52 No. 12 p. 3374-3385 2011/12/15

    Publisher: 情報処理学会
  25. Constructing spoken dialogue system that uses information at locutionary act level and its data analysis

    Vol. 61 p. 7-12 2011/03/25

    Publisher: 人工知能学会
  26. 誤認識頻発状況下で選択肢列挙を行う音声対話システムとその評価

    松山匡子, 駒谷和範, 武田龍, 尾形哲也, 奥乃博

    第73回全国大会講演論文集 Vol. 2011 No. 1 p. 83-84 2011/03/02

  27. Analysis of User Utterances and Application to Identify User's Referent in Barge-in-able Spoken Dialogue System

    MATSUYAMA KYOKO, KOMATANI KAZUNORI, TAKEDA RYU, OGATA TETSUYA, OKUNO HIROSHI G.

    Vol. 82 No. 21 p. U1-U6 2010/07/22

    Publisher: 情報処理学会
  28. Self-speech cancellation with Semi-blind ICA for Robot speech interaction

    TAKEDA Ryu, NAKADAI Kazuhiro, TAKAHASHI Toru, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Vol. 72 No. 0 p. 27-28 2010/03/08

  29. ニホンアマガエルの同期した発声行動に関する数理的研究および音響信号解析 (第5回生物数学の理論とその応用--RIMS研究集会報告集)

    合原 一究, 武田 龍, 水本 武志, 高橋 徹, 奥乃 博

    数理解析研究所講究録 Vol. 1663 No. 1663 p. 153-158 2009/09

    Publisher: 京都大学数理解析研究所
  30. Identification of User's Referent with Barge-in Timing Model

    MATSUYAMA KYOKO, KOMATANI KAZUNORI, TAKEDA RYU, OGATA TETSUYA, OKUNO HIROSHI G.

    Vol. 76 No. 14 p. N1-N7 2009/05/21

    Publisher: 情報処理学会
  31. Identifying User's Referents Using Barge-in Timing in Spoken Dialogue Systems under Real Environments

    MATSUYAMA Kyoko, KOMATANI Kazunori, SHIRAMATSU Shun, TAKEDA Ryu, OGATA Tetsuya, OKUNO Hiroshi G.

    Vol. 71 No. 0 p. 119-120 2009/03/10

  32. Realtime Syncronization Method between Audio Signal and Score Using Beats, Melodies, and Harmonies for Singer Robots

    OTSUKA Takuma, MURATA Kazumasa, TAKEDA Ryu, NAKADAI Kazuhiro, TAKAHASHI Toru, OGATA Tetsuya, OKUNO Hiroshi G.

    Vol. 71 No. 0 p. 243-244 2009/03/10

  33. ニホンアマガエルの同期した発声行動に関する実験的研究およびその数理モデル解析

    合原 一究, 武田 龍, 水本 武志, 高橋 徹, 合原 一幸, 奥乃 博

    電子情報通信学会技術研究報告. NC, ニューロコンピューティング Vol. 108 No. 480 p. 335-339 2009/03/04

    Publisher: 一般社団法人電子情報通信学会
  34. Design and Evaluation of Barge-In enable Robot Audition System with ICA and MFT-based ASR

    TAKEDA Ryu, NAKADAI Kazuhiro, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Vol. 70 No. 0 p. 135-136 2008/03/13

  35. Development of a robot capable of counting the beats by separating music and recognizing beats from a mixture of music and its own counting voice

    MIZUMOTO Takeshi, TAKEDA Ryu, YOSHII Kazuyoshi, KOMATANI Kazunori, OGATA Tetsuya, OKUNO Hiroshi G.

    Vol. 70 No. 0 p. 439-440 2008/03/13

  36. E-052 Semi-Blind Source Separation using ICA for Barge-In-Capable Robot Spoken Dialogue

    Takeda Ryu, Nakadai Kazuhiro, Komatani Kazunori, Ogata Tetsuya, Okuno Hiroshi G.

    Vol. 6 No. 2 p. 261-262 2007/08/22

    Publisher: Forum on Information Technology
  37. Simultaneous Speech Recognition Using Missing Feature Theory

    YAMAMOTO Shunichi, TAKEDA Ryu, OKUNO Hiroshi G.

    Journal of The Society of Instrument and Control Engineers Vol. 46 No. 6 p. 447-452 2007/06/10

    Publisher: The Society of Instrument and Control Engineers
  38. ICA と MFT に基づく音声認識における Soft Mask を用いた性能評価

    武田 龍, 山本 俊一, 駒谷 和範, 尾形 哲也, 奥乃 博

    第69回全国大会講演論文集 Vol. 2007 No. 1 p. 571-572 2007/03/06

  39. ICAによる音源分離とミッシングフィーチャーマスクによる同時発話認識

    武田 龍, 山本 俊一, 駒谷 和範, 尾形 哲也, 奥乃 博

    第68回全国大会講演論文集 Vol. 2006 No. 1 p. 327-328 2006/03/07

  40. ICAによる音源分離とMFTに基づく音声認識の同時発話認識による評価

    武田龍

    人工知能学会研究会資料 Vol. 624 p. 9-16 2006

Industrial Property Rights 12

  1. 設備点検支援装置

    武本 剛, 本間 健, 武田 龍, 齋藤 仁, 畑山 正美, 三浦 春好, 天野 亘

    特許6427377

  2. 音声認識方法、及び音声認識装置

    武田 龍, 本間 健, 武本 剛

    特許6284462

  3. 検索サーバ、及び検索方法

    藤田 雄介, 武田 龍

    特許6254504

  4. 検索サーバ、及び検索方法

    藤田 雄介, 武田 龍, 神田 直之

    特許6074050

  5. 音声データ認識システム及び音声データ認識方法

    武田 龍

  6. 移動ロボット、及び、音源位置推定システム

    住吉 隆志, 大淵 康成, 神田 直之, 武田 龍

    特許6157598

  7. 検索サーバ、及び検索方法

    武田 龍, 神田 直之, 大淵 康成, 住吉 貴志

    特許5897718

  8. 残響抑圧装置、及び残響抑圧方法

    中臺 一博, 中島 弘史, 奥乃 博, 武田 龍

    特許5550456

  9. 残響抑圧装置、及び残響抑圧方法

    中臺 一博, 武田 龍, 奥乃 博

    特許5572445

  10. ビートトラッキング装置、ビートトラッキング方法、記録媒体、ビートトラッキング用プログラム、及びロボット

    中臺 一博, 長谷川 雄二, 辻野 広司, 村田 和真, 武田 龍, 奥乃 博

    特許5337608

  11. ロボット

    中臺 一博, 長谷川 雄二, 辻野 広司, 村田 和真, 武田 龍, 奥乃 博

    特許5150573

  12. 音源分離システム

    武田 龍, 中臺 一博, 辻野 広司, 奥乃 博

    特許5178370

Institutional Repository 2

Content Published in the University of Osaka Institutional Repository (OUKA)
  1. Learning to Ask Efficiently in Dialogue: Reinforcement Learning Extensions for Stream-based Active Learning

    Waki Issei, Takeda Ryu, Komatani Kazunori

    2025

  2. Design Guidelines for Developing Systems for Dialogue System Competitions

    Komatani Kazunori, Takeda Ryu, Nakashima Keisuke, Nakano Mikio

    Lecture Notes in Electrical Engineering Vol. 943 p. 161-177 2022/11/01