User Guidance Function in Natural Language Interface for Document Query and Handling. - Hiroshi Tsuji; Yukiko Morimoto; Yasuharu Namba; Hisao Mase; Hiroshi Kinukawa; Hirohide Endoh (FQAS, 1996)

Computer-aided News Article Summarization. - Hisao Mase; Hiroshi Tsuji; Hiroshi Kinukawa (IEA/AIE, 1996)

Two-Stage Patent Retrieval Method Considering Claim Structure. - Hisao Mase; Tadataka Matsubayashi; Yuichi Ogawa; Makoto Iwayama; Tadaaki Oshio (NTCIR, 2004)

NTCIR-5 Patent Retrieval Experiments at Hitachi. - Hisao Mase; Tadataka Matsubayashi; Yuichi Ogawa; Takaaki Yayoi; Yusuke Sato; Makoto Iwayama (NTCIR, 2005)

Proposal of two-stage patent retrieval method considering the claim structure. - Hisao Mase; Tadataka Matsubayashi; Yuichi Ogawa; Makoto Iwayama; Tadaaki Oshio (ACM Trans. Asian Lang. Inf. Process., 2005)

Perspectives on Reuse Process Support Systems for Document-Type Knowledge. - Yukiko Morimoto; Hisao Mase; Hiroshi Tsuji (HCI (4), 2007)

NTCIR-6 Patent Retrieval Experiments at Hitachi. - Hisao Mase; Makoto Iwayama (NTCIR, 2007)

NTCIR-7 Patent Mining Experiments at Hitachi. - Hisao Mase; Makoto Iwayama (NTCIR, 2008)

NTCIR-8 Research Paper Classification Experiments at Hitachi. - Hisao Mase; Makoto Iwayama (NTCIR, 2010)