YOMIDAS REKISHIKAN, new database service of Japanese newspaper and YOMIDAS YOGO JISHO, thesaurus by The Yomiuri Shimbun 論文 Hamaguchi Masahiro ·2009-01-01 ·『Journal of Information Processing and Management』 52(3) pp. 142-149 doi:10.1241/johokanri.52.142