Chih-Hsun Chou Chin-Chuan Han Ya-Hui Chen GA Based Optimal Keyword Extraction in an Automatic Chinese Web Document Classification System. 224-234 2007 conf/ispa/2007w ISPA Workshops https://doi.org/10.1007/978-3-540-74767-3_24 db/conf/ispa/ispa2007w.html#ChouHC07