"Hilofumi Yamamoto","The Development of the Hachidaishu (ca. 905-1205) Thesaurus with the Classification Codes Based on Semantic Principles, and the Visualization System of Poetic Vocabulary Construction","IPSJ-SIG Computers and Humanities Symposium 2008","IPSJ-SIG Computers and Humanities Symposium 2008","The information processing society of Japan","Vol. 2008","No. 15","pp. 325-332",2008,Dec. "Hilofumi Yamamoto","共出現パターンによる歌ことばの分析: 八代集における「吉野の桜」をめぐって",,"The Journal of the Study of Vocabulary","The society of the Study of Vocabulary",,"No. 6","pp. 12-19",2008,Dec.