"Hilofumi Yamamoto","An analysis of poetic vocabulary by boolean operations and graph theory",,"The Journal of the Study of Vocabulary","The association of the Study of Vocabulary, Japan","Vol. 9",,"pp. 86-94",2011,Dec.
"Hilofumi Yamamoto","Lexical Space of Yamabuki (Japanese Kerria)","IPSJ Symposium Jinmonkon 2011","IPSJ Symposium Series","IPSJ","Vol. 2011","No. 8","pp. 141-146",2011,Dec.
"Hilofumi Yamamoto","Graph Representation of the Connotations of Classical Japanese Poetic Vocabulary","Osaka symposium on digital humanities 2011","Osaka symposium on digital humanities 2011",,"Vol. 1","No. 1","p. 42",2011,Sept.
"Makiro Tanaka,Hilofumi Yamamoto","Quantitative Analysis of Loanwords of Eight Literary Works in the Heian Period (794-1185)","Osaka symposium on digital humanities 2011","Osaka simposium on digital humanities 2011",,"Vol. 1","No. 1","pp. 51-2",2011,Sept.
"Makiro Tanaka,Hilofumi Yamamoto","An analysis of Sino-Japanese words of the Heian period for the development of the historical Japanese dictionary","Asialex 2011","Lexicography: Theoretical and Practical Perspectives",,"Vol. 2011","  496","  505",2011,Aug.
"Hilofumi Yamamoto,Makiro Tanaka","Development of the thesaurus of classical Japanese poetic vocabulary","Asialex 2011","Lexicography: Theoretical and Practical Perspectives",,"Vol. 2011","  576","  585",2011,Aug.
"Hilofumi Yamamoto","Development and Evaluation of the Dictionary of Japanese Compound Functional Expressions Based on BCCWJ","特定領域研究「日本語コーパス」平成22年度公開ワークショップ（研究成果報告会）","特定領域研究「日本語コーパス」平成22年度公開ワークショップ（研究成果報告会）予稿集","文部科学省科学研究費特定領域研究「日本語コーパス」総括班",,,"pp. 535-544",2011,Mar.