Jiangning Wu Hiroki Tanioka Shizhu Wang Donghua Pan Kenichi Yamamoto Zhongtuo Wang An Improved VSM Based Information Retrieval System and Fuzzy Query Expansion. 537-546 2005 conf/fskd/2005-1 FSKD (1) http://dx.doi.org/10.1007/11539506_68 db/conf/fskd/fskd2005-1.html#WuTWPYW05