Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIGASHI Kazuyuki and TAKAHASHI Hitoshi and NAKAGAWA Hiroyuki and TSUCHIYA Tatsuhiro,A Method of Refining Topic Models Based on Term and Document Frequencies.,Computer Software,02896540,Japan Society for Software Science and Technology,2019-10-25,36,4,4_25-4_31,https://cir.nii.ac.jp/crid/1390283659833300992,https://doi.org/10.11309/jssst.36.4_25