2004

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Experiments on Patent Retrieval at NTCIR-4 Workshop
Hironori Takeuchi | Naohiko Uramoto | Koichi Takeda
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

2005

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Experiments on Patent Retrieval at NTCIR-5 Workshop
Hironori Takeuchi | Naohiko Uramoto | Koichi Takeda
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

2010

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Feature-Rich Information Extraction for the Technical Trend-Map Creation
Risa Nishiyama | Yuta Tsuboi | Yuya Unno | Hironori Takeuchi
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