NTT DTEC at Patent Retrieval Task. - Yohichi Nakatani; Koutarou Takada; Michihiro Isoda; Manabu Okumura; Makoto Iwayama; Yuzo Marukawa; Akihiro Shinmori (NTCIR, 2002)

Rhetorical Structure Analysis of Japanese Patent Claims using Cue Phrases. - Akihiro Shinmori; Manabu Okumura; Yuzo Marukawa; Makoto Iwayama (NTCIR, 2002)

An empirical study on retrieval models for different document genres: patents and newspaper articles. - Makoto Iwayama; Atsushi Fujii; Noriko Kando; Yuzo Marukawa (SIGIR, 2003)

Can Claim Analysis Contribute toward Patent Map Generation? - Akihiro Shinmori; Manabu Okumura; Yuzo Marukawa; Makoto Iwayama (NTCIR, 2004)

Evaluating patent retrieval in the third NTCIR workshop. - Makoto Iwayama; Atsushi Fujii; Noriko Kando; Yuzo Marukawa (Inf. Process. Manag., 2006)