2007

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Toshiba BRIDJE at NTCIR-6 CLIR: The Head/Lead Method and Graded Relevance Feedback
Tetsuya Sakai | Makoto Koyama | Tatsuya Izuha | Akira Kumano | Toshihiko Manabe | Tomoharu Kokubu
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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Toshiba BRIDJE at NTCIR-5 CLIR: Evaluation using Geometric Means
Tetsuya Sakai | Toshihiko Manabe | Akira Kumano | Makoto Koyama | Tomoharu Kokubu
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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The Relationship between Answer Ranking and User Satisfaction in a Question Answering System
Tomoharu Kokubu | Tetsuya Sakai | Yoshimi Saito | Hideki Tsutsui | Toshihiko Manabe | Makoto Koyama | Hiroko Fujii
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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Toshiba ASKMi at NTCIR-4 QAC2
Tetsuya Sakai | Yoshimi Saito | Yumi Ichimura | Makoto Koyama | Tomoharu Kokubu
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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ASKMi: A Japanese Question Answering System based on Semantic Role Analysis
Tetsuya Sakai | Yoshimi Saito | Yumi Ichimura | Makoto Koyama | Tomoharu Kokubu | Toshihiko Manabe
Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 2004, 7th International Conference, University of Avignon, France, April 26-28, 2004. Proceedings

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The effect of back-formulating questions in question answering evaluation
Tetsuya Sakai | Yoshimi Saito | Yumi Ichimura | Tomoharu Kokubu | Makoto Koyama
SIGIR 2004: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Sheffield, UK, July 25-29, 2004

2003

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Evaluating retrieval performance for Japanese question answering: what are best passages?
Tetsuya Sakai | Tomoharu Kokubu
SIGIR 2003: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 28 - August 1, 2003, Toronto, Canada

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

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