岩田具治, Tomoharu Iwata

Japanese | English

Tomoharu Iwata
NTTコミュニケーション科学基礎研究所 協創情報研究部 知能創発環境研究グループ 所属
mail: iwata.tomoharu at lab.ntt.co.jp

略歴

2001年 慶應義塾大学環境情報学部卒業
2003年 東京大学大学院総合文化研究科修士課程修了
2003年 日本電信電話株式会社入社
2008年 京都大学大学院情報学研究科博士課程修了 博士(情報学)

表彰

  1. 言語処理学会 第17回年次大会 優秀発表賞, 2011
  2. ライフインテリジェンスとオフィス情報システム 研究賞, 2011
  3. WebDB Forum 2010 優秀論文賞, 2010
  4. IBIS2010 Honorable Mention, 2010
  5. KDD2010 Best Research Paper Award Honorable Mention, 2010
  6. 教育システム情報学会 全国大会 研究奨励賞, 2009
  7. 数理モデル化と問題解決研究会 プレゼンテーション賞, 2009
  8. 情報処理学会論文誌 論文賞, 2009
  9. FITヤングリサーチャー賞, 2007
  10. NTTコミュニケーション科学基礎研究所 奨励賞，2005
  11. 船井ベストペーパー賞, 2004
  12. (第8回全日本セパタクロー学生選手権大会優勝, 2000)
  13. (第6回日本学生セパタクロー選手権新人戦優勝, 2000)

論文

  1. Tomoharu Iwata, Takeshi Yamada, Naonori Ueda,
    "Modeling Noisy Annotated Data with Application to Social Annotation,"
    IEEE Transactions on Knowledge and Data Engineering, to appear

  2. Tomoharu Iwata, Takeshi Yamada, Yasushi Sakurai, Naonori Ueda,
    "Sequential Modeling of Topic Dynamics with Multiple Timescales,"
    ACM Transactions on Knowledge Discovery from Data (TKDD), Volume 5 Issue 4, 19:1-19:27, 2012

  3. 甲谷優, 岩田具治, 藤村考,
    "複数人によるアカウントの共有を考慮したトピックモデルに基づく協調フィルタリング,"
    日本データベース学会論文誌, Vol.9, No.3, 7-12, 2011

  4. Tomoharu Iwata, Tomoko Kojiri, Takeshi Yamada, Toyohide Watanabe,
    "Recommendation for English Multiple-choice Cloze Questions Based on Expected Test Scores,"
    International Journal of Knowledge-based and Intelligent Engineering Systems, Volume 15, Number 1, 2011

  5. Shinji Watanabe, Tomoharu Iwata, Takaaki Hori, Atsushi Sako, Yasuo Ariki,
    "Topic Tracking Language Model for Speech Recognition,"
    Computer Speech & Language, Volume 25, Issue 22, 440-461, 2011

  6. 甲谷優, 岩田具治, 塩原寿子, 藤村考,
    "QAコミュニティにおける複数情報源を用いた効果的な質問推薦,"
    情報処理学会論文誌 データベース(TOD), Vol.3, No. 4, 34-47, 2010

  7. Takuya Goto, Tomoko Kojiri, Toyohide Watanabe, Tomoharu Iwata, Takeshi Yamada,
    "Automatic Generation System of Multiple-choice Cloze Questions and its Evaluation,"
    Knowledge Management & E-Learning: An International Journal (KM&EL), Vol 2, No 3, 2010

  8. Tomoharu Iwata, Toshiyuki Tanaka, Takeshi Yamada, Naonori Ueda,
    "Improving Classifier Performance using Data with Different Taxonomies,"
    IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 23, No. 11, 1668-1677, 2011

  9. 岩田具治，渡部晋治，山田武士，上田修功：
    "購買行動解析のためのトピック追跡モデル,"
    電子情報通信学会, Vol.J93-D, No.6, pp.978-987, 2010

  10. 石黒勝彦，岩田具治，上田修功：
    "時間依存関係データ分析のための動的無限関係モデル,"
    情報処理学会論文誌　数理モデル化と応用, Vol.3, No.1, 1-12, 2010

  11. Takuya Goto, Tomoko Kojiri, Toyohide Watanabe, Tomoharu Iwata, Takeshi Yamada,
    "Knowledge Network for English Grammar Learning Support System,"
    International Journal of Advanced Intelligence Paradigms, Vol.2, No.1, 64-77, 2009

  12. 岩田具治，山田武士，上田修功,
    "トピックモデルに基づく文書群の可視化,"
    情報処理学会論文誌, Vol.50, No.6, 1649-1659, 2009
    [pdf]*IPSJ

  13. 岩田具治，田中利幸，山田武士，上田修功,
    "分布が変化するデータにおけるモデル学習法,"
    電子情報通信学会, Vol.J-92D, No.3, 361-370, 2009

  14. Tomoharu Iwata, Kazumi Saito, Takeshi Yamada,
    "Recommendation Method for Improving Customer Lifetime Value,"
    IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol.20, No.9, 1254-1263, 2008
    [pdf] © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. *IEEE

  15. 岩田具治，山田武士, 上田修功，
    "購買順序を効率的に用いた協調フィルタリング,"
    情報処理学会論文誌：数理モデル化と応用, Vol.49, No.SIG4 (TOM20), 125-134, 2008 (情報処理学会論文賞)
    [pdf]*IPSJ

  16. 岩田具治，斉藤和巳,
    "パラメトリック埋め込み法を用いた分類器の視覚的解析,"
    情報処理学会論文誌，Vol.48，No.12，4012-4022，2007
    [pdf]*IPSJ

  17. 岩田具治，斉藤和巳，山田武士,
    "契約期間を延ばすためのレコメンド法,"
    情報処理学会論文誌：数理モデル化と応用, Vol.48，No.SIG6 (TOM17), 65-74, 2007
    [pdf]*IPSJ

  18. Tomoharu Iwata, Kazumi Saito, Naonori Ueda, Sean Stromsten, Thomas L. Griffiths, Joshua B. Tenenbaum,
    "Parametric Embedding for Class Visualization,"
    Neural Computation, Vol.19, No.9, 2536-2556, 2007
    [pdf]

  19. Tomoharu Iwata, Kazumi Saito,
    "Visualization of Anomalies using Mixture Models,"
    Journal of Intelligent Manufacturing，Vol.16, 635-643, 2005
    [pdf]

  20. 岩田具治，斉藤和巳，上田修功,
    "パラメトリック埋め込み法によるクラス構造の可視化,"
    情報処理学会論文誌，Vol.46, No.9，2337-2346，2005
    [pdf]*IPSJ

国際会議

  1. Kevin Duh, Tsutomo Hirao, Akisato Kimura, Katsuhiko Ishiguro, Tomoharu Iwata, Ching-Man Au Yeung,
    "Creating Stories: Social Curation of Twitter Messages,"
    In: ICWSM'12: Proceedings of the 6th International AAAI Conference on Weblogs and Social Media, Dublin, Ireland, 2012

  2. Ekapol Chuangsuwanich, Shinji Watanabe, Takaaki Hori, Tomoharu Iwata, James Glass,
    "Handling Uncertain Observations in Unsupervised Topic-mixture Language Model Adaptation,"
    ICASSP2012, 2012

  3. Roland Roller, Shinji Watanabe, Tomoharu Iwata,
    "Effect of Dialog Acts on Word Use in Polylogue,"
    ICASSP2012, 2012

  4. Akinori Fujino, Masaaki Nagata, Tomoharu Iwata,
    "Mislabeling Detection with Cross-validation Likelihood Maximization,"
    ACML2011, 2011

  5. Ching Man Au Yeung, Tomoharu Iwata,
    "Extracting Multi-dimensional Relations: A Generative Model of Groups of Entities in a Corpus,"
    CIKM2011, 1203-1208, 2011

  6. Kevin Duh, Katsuhito Sudoh, Tomoharu Iwata, Hajime Tsukada,
    "Alignment Inference and Bayesian Adaptation for Machine Translation,"
    Proceedings of Machine Translation Summit XIII, Xiamen, China, Sep. 2011

  7. Tomoharu Iwata, Shinji Watanabe,
    "Learning Influences from Word Use in Polylogue,"
    Interspeech2011, 3089-3092, 2011

  8. Yasuhisa Yoshida, Tsutomu Hirao, Tomoharu Iwata, Masaaki Nagata, Yuji Matsumoto,
    "Transfer Learning for Multiple-Domain Sentiment Analysis: Identifying Domain Dependent/Independent Word Polarity,"
    AAAI2011, 2011

  9. Tomoharu Iwata, Shinji Watanabe, Hiroshi Sawada,
    "Fashion Coordinates Recommender System using Photographs from Fashion Magazines,"
    IJCAI2011, 2262-2267, 2011
    [pdf]

  10. Ching Man Au Yeung, Tomoharu Iwata,
    "Strength of Social Influence in Trust Networks in Product Review Sites,"
    WSDM2011, 495-504, 2011

  11. Katsuhiko Ishiguro, Tomoharu Iwata, Naonori Ueda, Josh Tenenbaum,
    "Dynamic Infinite Relational Model for Time-varying Relational Data Analysis,"
    NIPS2010, 910-918, 2010

  12. Takeshi Kurashima, Tomoharu Iwata, Go Irie, Ko Fujimura,
    "Travel Route Recommendation using Geotags in Photo Sharing Sites,"
    CIKM2010, 579-588, 2010

  13. Shinji Watanabe, Tomoharu Iwata, Takaaki Hori, Atsushi Sako, Yasuo Ariki,
    "Application of Topic Tracking Model to Language Model Adaptation and Meeting Analysis,"
    Proc. IEEE Workshop on Spoken Language Technology (SLT'10), 2010

  14. Yutaka Kabutoya, Tomoharu Iwata, Ko Fujimura,
    "Modeling Multiple Users' Purchase over a Single Account for Collaborative Filtering,"
    WISE2010, 2010

  15. Tomoharu Iwata, Takeshi Yamada, Yasushi Sakurai, Naonori Ueda,
    "Online Multiscale Dynamic Topic Models,"
    Proc. of 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD2010), 663-672, 2010
    (Best Research Paper Award Honorable Mention)
    [pdf]

  16. Tomoharu Iwata, Daichi Mochihashi, Hiroshi Sawada,
    "Learning Common Grammar from Multilingual Corpus,"
    Proceedings of 48th Annual Meeting of the Association for Computational Linguistics (ACL2010), 184-188, 2010
    [pdf]

  17. Yutaka Kabutoya, Tomoharu Iwata, Hisako Shiohara, Ko Fujimura,
    "Effective Question Recommendation Based on Multiple Features for Question Answering Communities,"
    Proceedings of 4th Int'l AAAI Conference on Weblogs and Social Media (ICWSM2010), 2010

  18. Albert Au Yeung, Tomoharu Iwata,
    "Capturing Implicit User Influence in Online Social Sharing,"
    Proceedings of 21st ACM Conference on Hypertext and Hypermedia (HT2010), 245-254, 2010

  19. Tomoharu Iwata, Takeshi Yamada, Naonori Ueda,
    "Modeling Social Annotation Data with Content Relevance using a Topic Model,"
    Advances in Neural Information Processing Systems (NIPS2009), 835-843, 2009
    [pdf (revised version)]

  20. Takuya Goto, Tomoko Kojiri, Toyohide Watanabe, Tomoharu Iwata, Takeshi Yamada,
    "An Automatic Generation of Multiple-choice Cloze Questions Based on　Statistical Learning,"
    The 17th International Conference on Computers in Education (ICCE2009), 415-422, 2009 (Nomination for Best Student Paper Award)

  21. Tomoharu Iwata, Shinji Watanabe, Takeshi Yamada, Naonori Ueda,
    "Topic Tracking Model for Analyzing Consumer Purchase Behavior,"
    Proc. of 21st International Joint Conference on Artificial Intelligence (IJCAI-09), 1427-1432, 2009
    [pdf]

  22. Tomoharu Iwata, Tomoko Kojiri, Takeshi Yamada, Toyohide Watanabe,
    "Recommendation Algorithm for Learning Materials that Maximizes Expected Test Scores,"
    Proc. of 10th Pacific Rim International Conference on Artificial Intelligence (PRICAI2008), 965-970, 2008
    [pdf]

  23. Takuya Goto, Tomoko Kojiri, Toyohide Watanabe, Takeshi Yamada, Tomoharu Iwata,
    "English Grammar Learning System Based on Knowledge Network of Fill-in-the-Blank Exercises,"
    Proc. of 12th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES2008), Part III, LNAI 5179, 588-595, 2008

  24. Tomoharu Iwata, Takeshi Yamada, Naonori Ueda,
    "Probabilistic Latent Semantic Visualization: Topic Model for Visualizing Documents,"
    Proc. of 14th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD2008), 363-371, 2008
    [pdf] © ACM, 2008. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution.

  25. Masahide Kakehi, Tomoko Kojiri, Toyohide Watanabe, Takeshi Yamada, Tomoharu Iwata,
    "Organization of Discussion Knowledge Graph from Collaborative Learning Record,"
    Proc. of 11th International Conference on Knowledge-Based Intelligent Information & Engineering Systems (KES2007), LNAI 4694 III, 600-607, 2007

  26. Tomoharu Iwata, Kazumi Saito, Takeshi Yamada,
    "Modeling User Behavior in Recommender Systems based on Maximum Entropy,"
    Proc. of 16th International World Wide Web Conference (WWW2007), poster, 1281-1282, 2007
    [pdf] © ACM, 2007. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution.

  27. Tomoharu Iwata, Kazumi Saito, Takeshi Yamada,
    "Recommendation Method for Extending Subscription Periods,"
    Proc. of 12th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD2006), 574-579, 2006
    [pdf] © ACM, 2006. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution.

  28. Tomoharu Iwata, Kazumi Saito, Naonori Ueda,
    "Visual Nonlinear Discriminant Analysis for Classifier Design,"
    Proc. of 14th European Symposium on Artificial Neural Networks (ESANN2006), 283-288, 2006
    [pdf]

  29. Tomoharu Iwata, Kazumi Saito, Naonori Ueda, Sean Stromsten, Thomas L. Griffiths, Joshua B. Tenenbaum,
    Parametric Embedding for Class Visualization
    Advances in Neural Information Processing Systems 17 (NIPS2004), 617-624, 2005
    [pdf]

  30. Tomoharu Iwata, Kazumi Saito,
    "Visualization of Anomaly using Mixture Model,"
    Proc. of 8th International Conference on Knowledge-Based Intelligent Information & Engineering Systems (KES2004), Part 2, 624-631, 2004

  31. Takashi Ikegami, Tomoharu Iwata, Koh Hashimoto,
    A Network of Dynamic Keystone Species
    Proc. of Artificial Life VIII, 216-222, 2002

  32. Kouichi Takahashi, Yusuke Saito, Tomohiko Aikawa, Tomoharu Iwata, Motohiro Yoneda, Masayuki Okayama, Masaru Tomita,
    "E-Cell: Software Environment for Whole Cell Simulation and Analysis,"
    4th Annual International Conference on Computational Molecular Biology (RECOMB2000), 2000

  33. Yusuke Saito, Kouichi Takahashi, Tomoharu Iwata, Tomohiko Aikawa, Masaru Tomita,
    "Parameter Estimation Mechanism of E-Cell Simulation Environment,"
    Genome Informatics (GIW99), 1999

レター

  1. 岩田具治，斉藤和巳，山田武士,
    "契約期間を延ばすためのリコメンデーション法,"
    情報科学技術レターズ, Vol.5, 109-112, 2006 (FITヤングリサーチャー賞)
    [pdf]

  2. 岩田具治，斉藤和巳，上田修功,
    "事後確率構造の可視化,"
    情報科学技術レターズ, Vol.3, 119-120, 2004 (船井ベストペーパー賞)
    [pdf]

国内会議

  1. 倉島 健，岩田具治，入江 豪，藤村 考:
    "ソーシャルメディアを用いた個人向け旅行プランの自動生成,"
    電子情報通信学会技術研究報告, LOIS, ライフインテリジェンスとオフィス情報システム, 2011

  2. 甲谷 優, 岩田 具治, 内山 俊郎, 藤村 考:
    "ディリクレ過程を用いたアカウントを共有するユーザの購買のモデリング,"
    人工知能学会全国大会, 2011

  3. 吉田康久 平尾努 岩田具治 永田昌明 松本裕治:
    "分野に依存しない単語極性を考慮した評判分析のための転移学習モデル,"
    言語処理学会第17回年次大会, 2011 (優秀発表賞)

  4. Ching-Man Au Yeung, Tomoharu Iwata,
    "Trust Relations and Product Ratings on the Web,"
    WebDB Forum 2010, 2010 (優秀論文賞)

  5. 岩田具治, 山田武士, 上田修功,
    "ラベルノイズに頑健なトピックモデル,"
    IBIS2010, 2010 (Honorable Mention)

  6. 石黒勝彦, 持橋大地, 岩田具治, 澤田宏, 上田修功,
    "トピック画像モデルによるデータの画像化,"
    IBIS2010, 2010

  7. 岩田具治,
    潜在トピックモデルを用いたデータマイニング,
    第1回Latent Dynamics Workshop, 2010/6

  8. 岩田具治, 渡部晋治, 澤田宏:
    ファッション雑誌を用いたコーディネート推薦システム,
    FIT2010, 2010

  9. 甲谷優, 岩田具治, 塩原寿子, 藤村考:
    QAコミュニティにおける複数情報源を用いた効果的な質問推薦,
    DEIM2010, 2010

  10. 倉島健, 岩田具治, 入江豪, 藤村考:
    写真共有サイトにおけるジオタグ情報を利用したトラベルルート推薦,
    LOIS2009-88, 55--60, 2010 （LOIS研究賞受賞）

  11. 後藤拓也，小尻智子，渡邉豊英，岩田具治，山田武士：
    統計的学習を用いた問題作成知識抽出に基づく英語問題自動生成，
    人工知能学会研究会資料，SIG-ALST-A903-06, pp.27--32, 2010

  12. 石黒勝彦, 岩田具治, 上田修功,
    時間変化に対応する無限関係モデルの提案,
    情報処理学会研究報告, Vol. 2009-MPS-75, No. 24, pp. 1-6, 2009 (プレゼンテーション賞）

  13. 岩田具治, 山田武士, 櫻井保志, 上田修功,
    "オンライン学習可能な多重スケールでの時間発展を考慮したトピックモデル,"
    第12回情報論的学習理論ワークショップ (IBIS2009), 2009

  14. 後藤拓也，小尻智子，渡邉豊英，岩田具治，山田武士,
    "統計的学習に基づいた英語短文穴埋問題自動生成システムの評価,"
    教育システム情報学会第34回全国大会講演論文集，pp.74-75, 2009 (大会研究奨励賞受賞)

  15. 渡部晋治，岩田具治，堀貴明，佐古淳，有木康雄,
    "話題追従型言語モデルについての考察,"
    日本音響学会秋季研究発表会, 2-1-3, 2009

  16. 後藤拓也，小尻智子，渡邉豊英，岩田具治，山田武士,
    "既存問題の統計情報を利用した英語問題自動生成手法,"
    人工知能学会研究会資料，SIG-ALST-A901-02，9-14, 2009

  17. 岩田具治, 山田武士, 上田修功,
    "内容と関連するタグの教師なし抽出,"
    信学技報, Vol.109, No.51, AI2009-3, 13-18, 2009

  18. 佐古淳, 有木康雄, 岩田具治, 渡部晋治, 堀 貴明,
    "話題の連続/不連続変化を考慮したトピックモデルに基づく音声認識,"
    信学技報, Vol. 108, No. 338, SP2008-88, 55-60, 2008

  19. 岩田具治，渡部晋治，山田武士，上田修功,
    "トピックモデルに基づくユーザ興味の追跡,"
    情報論的学習理論ワークショップ(IBIS2008), 2008

  20. 岩田具治，田中利幸，山田武士，上田修功，
    "分布が変化するデータにおけるモデル学習法,"
    情報論的学習理論ワークショップ(IBIS2007), 170-175,2007

  21. 筧将英，小尻智子，渡邉豊英，山田武士，岩田具治,
    "協調学習からの問題解決シナリオの抽出,"
    教育システム情報学会研究報告，Vol.22, No.3, 3-7, 2007

  22. 岩田具治，斉藤和巳，山田武士,
    "最大エントロピー法に基づく推薦システムでのユーザ行動のモデル化,"
    第6回情報科学技術フォーラム(FIT2007)，2007

  23. 筧将英，小尻智子，渡邉豊英，山田武士，岩田具治，
    "学習者の視点に基づく協調学習履歴の構造化,"
    第6回情報科学技術フォーラム(FIT2007)，2007

  24. 岩田具治, 斉藤和巳, 山田武士,
    "顧客生涯価値を高めるためのリコメンデーション法,"
    パターン認識・メディア理解研究会，PRMU2007-37, 57-62, 2007

  25. 岩田具治，山田武士, 上田修功，
    "購買順序を考慮した協調フィルタリング,"
    人工知能と知識処理研究会，AI2007-3, 13-18, 2007

  26. 岩田具治，斉藤和巳，山田武士,
    "定額制サービスにおける優良顧客の購買パターン分析,"
    第18回データ工学ワークショップ(DEWS2007)，2007

  27. 岩田具治，斉藤和巳，山田武士,
    "契約期間を延ばすためのレコメンド法,"
    数理モデル化と問題解決研究会，情報処理学会研究報告，MPS-61，5-8，2006

  28. 岩田具治，斉藤和巳，上田修功,
    "パラメトリック埋め込み法によるWeb検索結果のトピック可視化,"
    知識ベースシステム研究会(第69回)，SIG-KBS-A405, 51-56, 2005

  29. 岩田具治，斉藤和巳，上田修功,
    "クラス可視化のためのパラメトリック埋め込み法,"
    日本神経回路学会第14回全国大会講演論文集, 20-21, 2004

  30. 岩田具治，斉藤和巳，上田修功,
    "球面埋め込み法による2部グラフの可視化,"
    日本神経回路学会第14回全国大会講演論文集, 66-67, 2004

  31. 岩田具治，斉藤和巳，上田修功,
    "分類の評価や特異文書の検出のための文書群の構造可視化,"
    自然言語処理研究会, 情報処理学会研究発表資料，NL-161-4, 25-32, 2004

  32. 岩田具治，斉藤和巳,
    "混合モデルを用いた異常値の可視化,"
    ニューロコンピューティング研究会, 信学技報 Vol.103 No.734，NC2003-214，121-126, 2004

学会活動

  1. 電子情報通信学会、情報処理学会会員
  2. 電子情報通信学会査読委員, 2010-
  3. Program Committee Member, 7th International Conference on Advanced Data Mining and Applications (ADMA 2011), 2011
  4. Program Committee Member, 3rd Asian Conference on Machine Learning (ACML 2011), 2011
  5. Program Committee Member, 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies (ACL-HLT 2011), 2011
  6. Program Committee Member, 2nd Asian Conference on Machine Learning (ACML 2010), 2010
  7. Program Committee Member, 1st International Workshop on Intelligent Visual Interfaces for Text Analysis (IVITA), 2010
  8. Program Committee Member, 1st Asian Conference on Machine Learning (ACML 2009), 2009

学位論文

  1. Tomoharu Iwata,
    "Probabilistic User Behavior Models in Online Stores for Recommender Systems,"
    Doctoral Thesis, Graduate School of Informatics, Kyoto University, 2008
    [pdf]

  2. 岩田具治,
    "生態系の進化ダイナミクスとキーストーン種,"
    修士論文，東京大学大学院 総合文化研究科, 2003
    [pdf]
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last update 14/May/2012