Automatic F-term Classification of Japanese Patent Documents Using the k-Nearest Neighborhood Method and the SMART Weighting 論文 Masaki Murata・Toshiyuki Kanamaru・Tamotsu Shirado・Hitoshi Isahara ·2007 ·『自然言語処理』 14(1) pp. 163-189 doi:10.5715/jnlp.14.163