2005

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NTCIR-5 Patent Retrieval Experiments at RICOH
Hideo Itoh
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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Ricoh in the NTCIR4 CLIR Tasks
Yuichi Kojima | Hideo Itoh
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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NTCIR-4 Patent Retrieval Experiments at RICOH
Hideo Itoh
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

2003

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Ricoh at CLEF 2003
Yuichi Kojima | Hideo Itoh | Hiroko Mano | Yasushi Ogawa
Working Notes for CLEF 2003 Workshop co-located with the 7th European Conference on Digital Libraries (ECDL 2003), Trondheim, Norway, August 21-22, 2003

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Ricoh at CLEF 2003
Yuichi Kojima | Hideo Itoh | Hiroko Mano | Yasushi Ogawa
Comparative Evaluation of Multilingual Information Access Systems, 4th Workshop of the Cross-Language Evaluation Forum, CLEF 2003, Trondheim, Norway, August 21-22, 2003, Revised Selected Papers

2002

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University of Tokyo/RICOH at NTCIR-3 Web Retrieval Task
Masashi Toyoda | Masaru Kitsuregawa | Hiroko Mano | Hideo Itoh | Yasushi Ogawa
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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Term Distillation for Cross-DB Retrieval
Hideo Itoh | Hiroko Mano | Yasushi Ogawa
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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RICOH at TREC-10: Web Track Ad-hoc Task
Hideo Itoh | Hiroko Mano | Yasushi Ogawa
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001

1999

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An Efficient Method for in Memory Construction of Suffix Arrays
Hideo Itoh | Hozumi Tanaka
Sixth International Symposium on String Processing and Information Retrieval and Fifth International Workshop on Groupware, SPIRE/CRIWG 1999, Cancun, Mexico, September 21-24, 1999

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