2019

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Final Report of the NTCIR-14 QA Lab-PoliInfo Task
Yasutomo Kimura | Hideyuki Shibuki | Hokuto Ototake | Yuzu Uchida | Keiichi Takamaru | Kotaro Sakamoto | Madoka Ishioroshi | Teruko Mitamura | Noriko Kando | Tatsunori Mori | Harumichi Yuasa | Satoshi Sekine | Kentaro Inui
NII Testbeds and Community for Information Access Research - 14th International Conference, NTCIR 2019, Tokyo, Japan, June 10-13, 2019, Revised Selected Papers

2017

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Automatic Evaluation of World History Essay Using Chronological and Geographical Measures
Kotaro Sakamoto | Hideyuki Shibuki | Madoka Ishioroshi | Akira Fujita | Yoshinobu Kano | Teruko Mitamura | Tatsunori Mori | Noriko Kando
Proceedings of the 8th International Workshop on Evaluating Information Access co-located with the 13th NTCIR Conference on the Evaluation of Information Access Technologies (NTCIR 2017), Tokyo, Japan, December 5, 2017

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Overview of the NTCIR-13 QA Lab-3 Task
Hideyuki Shibuki | Kotaro Sakamoto | Madoka Ishioroshi | Yoshinobu Kano | Teruko Mitamura | Tatsunori Mori | Noriko Kando
The 13th NTCIR Conference, Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, December 5-8, 2017

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Forst: Question Answering System for Second-stage Examinations at NTCIR-13 QA Lab-3 Task
Kotaro Sakamoto | Madoka Ishioroshi | Yuta Fukuhara | Akihiro Iizuka | Hideyuki Shibuki | Tatsunori Mori | Noriko Kando
The 13th NTCIR Conference, Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, December 5-8, 2017

2016

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Overview of the NTCIR-12 QA Lab-2 Task
Hideyuki Shibuki | Kotaro Sakamoto | Madoka Ishioroshi | Akira Fujita | Yoshinobu Kano | Teruko Mitamura | Tatsunori Mori | Noriko Kando
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016

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Forst: Question Answering System for Second-stage Examinations at NTCIR-12 QA Lab-2 Task
Kotaro Sakamoto | Madoka Ishioroshi | Hyogo Matsui | Takahisa Jin | Fuyuki Wada | Shu Nakayama | Hideyuki Shibuki | Tatsunori Mori | Noriko Kando
Proceedings of the 12th NTCIR Conference on Evaluation of Information Access Technologies, National Center of Sciences, Tokyo, Japan, June 7-10, 2016

2015

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Fusion of Heterogeneous Information in Graph-Based Ranking for Query-Biased Summarization
Kotaro Sakamoto | Hideyuki Shibuki | Tatsunori Mori | Noriko Kando
Proceedings of the First International Workshop on Graph Search and Beyond, GSB 2015, co-located with The 38th Annual SIGIR Conference (SIGIR'15), Santiago, Chile, August 13th, 2015

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Expert-Guided Contrastive Opinion Summarization for Controversial Issues
Jinlong Guo | Yujie Lu | Tatsunori Mori | Catherine Blake
Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume

2014

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Overview of the NTCIR-11 QA-Lab Task
Hideyuki Shibuki | Kotaro Sakamoto | Yoshinobu Kano | Teruko Mitamura | Madoka Ishioroshi | Kelly Y. Itakura | Di Wang | Tatsunori Mori | Noriko Kando
Proceedings of the 11th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR-11, National Center of Sciences, Tokyo, Japan, December 9-12, 2014

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Forst: Question Answering System Using Basic Element at NTCIR-11 QA-Lab Task
Kotaro Sakamoto | Hyogo Matsui | Eisuke Matsunaga | Takahisa Jin | Hideyuki Shibuki | Tatsunori Mori | Madoka Ishioroshi | Noriko Kando
Proceedings of the 11th NTCIR Conference on Evaluation of Information Access Technologies, NTCIR-11, National Center of Sciences, Tokyo, Japan, December 9-12, 2014

2010

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A Method for GeoTime Information Retrieval based on Question Decomposition and Question Answering
Tatsunori Mori
Proceedings of the 8th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-8, National Center of Sciences, Tokyo, Japan, June 15-18, 2010

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Overview of the NTCIR-8 ACLIA Tasks: Advanced Cross-Lingual Information Access
Teruko Mitamura | Hideki Shima | Tetsuya Sakai | Noriko Kando | Tatsunori Mori | Koichi Takeda | Chin-Yew Lin | Ruihua Song | Chuan-Jie Lin | Cheng-Wei Lee
Proceedings of the 8th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-8, National Center of Sciences, Tokyo, Japan, June 15-18, 2010

2008

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Overview of the NTCIR-7 ACLIA Tasks: Advanced Cross-Lingual Information Access
Teruko Mitamura | Eric Nyberg | Hideki Shima | Tsuneaki Kato | Tatsunori Mori | Chin-Yew Lin | Ruihua Song | Chuan-Jie Lin | Tetsuya Sakai | Donghong Ji | Noriko Kando
Proceedings of the 7th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-7, National Center of Sciences, Tokyo, Japan, December 16-19, 2008

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A Simple Baseline Method for NTCIR-7 MuST T2N Task -Yokohama National University at NTCIR-7 MuST T2N-
Tatsunori Mori | Rintaro Miyazaki
Proceedings of the 7th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-7, National Center of Sciences, Tokyo, Japan, December 16-19, 2008

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A QA System that Can Answer Any Class of Japanese Non-Factoid Questions and its Application to CCLQA EN-JA Task: Yokohama National University at NTCIR-7 ACLIA CCLQA EN-JA
Tatsunori Mori | Takuya Okubo | Madoka Ishioroshi
Proceedings of the 7th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-7, National Center of Sciences, Tokyo, Japan, December 16-19, 2008

2007

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An Overview of the 4th Question Answering Challenge (QAC-4) at NTCIR Workshop 6
Jun-ichi Fukumoto | Tsuneaki Kato | Fumito Masui | Tatsunori Mori
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007

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A Monolithic Approach and a Type-by-Type Approach for Non-Factoid Question-answering - Yokohama National University at NTCIR-6 QAC
Tatsunori Mori | Mitsuru Sato | Madoka Ishioroshi | Yugo Nishikawa | Shigenori Nakano | Kei Kimura
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007

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A Method of Cross-Lingual Question-Answering Based on Machine Translation and Noun Phrase Translation using Web documents - Yokohama National University at NTCIR-6 CLQA
Tatsunori Mori | Kousuke Takahashi
Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007

2005

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Answering Contextual Questions Based on the Cohesion with the Knowledge - Yokohama National University at NTCIR-5 QAC3
Tatsunori Mori | Shinpei Kawaguchi
Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005

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A Method of Cross Language Question-Answering Based on Machine Translation and Transliteration - Yokohama National University at NTCIR-5 CLQA1
Tatsunori Mori | Masami Kawagishi
Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005

2004

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Multi-Document Summarization Using a Question-Answering Engine - Yokohama National University at TSC3
Tatsunori Mori | Masanori Nozawa | Yoshiaki Asada
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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Japanese Q/A System Using A* Search and Its Improvement - Yokohama National University at QAC2
Tatsunori Mori
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

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Integration of PLSA into Probabilistic CLIR Model - Yokohama National University at NTCIR4 CLIR
Tetsu Muramatsu | Tatsunori Mori
Proceedings of the Fourth NTCIR Workshop on Research in Information Access Technologies Information Retrieval, Question Answering and Summarization, NTCIR-4, National Center of Sciences, Tokyo, Japan, June 2-4, 2004

2002

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Information Gain Ratio meets Maximal Marginal Relevance - A method of Summarization for Multiple Documents
Tatsunori Mori | Takuro Sasaki
Proceedings of the Third NTCIR Workshop on Research in Information Retrieval, Automatic Text Summarization and Question Answering, NTCIR-3, Tokyo, Japan, October 8-10, 2002

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A* Search Algorithm for Question Answering
Tatsunori Mori | Tomohiro Ohta | Katsuyuki Fujihata | Ryutaro Kumon
Proceedings of the Third NTCIR Workshop on Research in Information Retrieval, Automatic Text Summarization and Question Answering, NTCIR-3, Tokyo, Japan, October 8-10, 2002

2001

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Term Weighting Method based on Information Gain Ratio for Summarizing Documents Retrieved by IR Systems
Tatsunori Mori | Miwa Kikuchi | Kazufumi Yoshida
Proceedings of the Third Second Workshop Meeting on Evaluation of Chinese & Japanese Text Retrieval and Text Summarization, NTCIR-2, Tokyo, Japan, March 7-9, 2001

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Japanese and English Cross-lingual Information Retrieval at DLUT
Seigo Tanimura | Masashi Suzuki | Hiroshi Nakagawa | Tatsunori Mori
Proceedings of the Third Second Workshop Meeting on Evaluation of Chinese & Japanese Text Retrieval and Text Summarization, NTCIR-2, Tokyo, Japan, March 7-9, 2001

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Cross-Lingual Information Retrieval based on LSI with Multiple Word Spaces
Tatsunori Mori | Tomoharu Kokubu | Takashi Tanaka
Proceedings of the Third Second Workshop Meeting on Evaluation of Chinese & Japanese Text Retrieval and Text Summarization, NTCIR-2, Tokyo, Japan, March 7-9, 2001