Hidekazu Tokunaga El-Sayed Atlam Masao Fuketa Kazuhiro Morita Kazuhiko Tsuda Jun-Ichi Aoe Estimating sentence types in computer related new product bulletins using a decision tree. 185-200 2004 168 Inf. Sci. 1-4 http://dx.doi.org/10.1016/j.ins.2004.02.004 db/journals/isci/isci168.html#HidekazuEMKKA04