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Makoto Iwayama

Advanced Research Laboratory, Hitachi, Ltd.

Test Collections for Patent-to-Patent Retrieval and Patent Map Generation in NTCIR-4 Workshop



Atsushi Fujii , Makoto Iwayama , Noriko Kando

* Proceedings of the 4th International Conference on Language Resources and Evaluation (LREC-2004), pp.1643-1646, May. 2004. 
* 4 pages, Proceedings of the 4th International Conference on Language Resources and Evaluation (to appear) 

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Topic Graph Generation for Query Navigation: Use of Frequency Classes for Topic Extraction



Yoshiki Niwa , Shingo Nishioka , Makoto Iwayama , Akihiko Takano , Yoshihiko Nitta

* Proceedings of NLPRS'97, Natural Language Processing Pacific Rim Symposium '97, pages 95-100, Phuket, Thailand, Dec. 1997 
* 6 pages, 3 figures 

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