%0 Journal Article
%T Method of Text Feature Extraction Based on Relative Word-frequency<br>基于相对词频的文本特征抽取方法
%A ZHANG Peng-fei
%A LI Yun
%A LIU Jian-yi
%A ZHONG Yi-xin
%A <br>张鹏飞
%A 李赟
%A 刘建毅
%A 钟义信
%J 计算机应用研究
%D 2005
%I 
%X Brings forward an improved model of evaluation function based on relative word-frequency, which is promised to re-solve above problem. This model is combined with the modern Chinese language word-frequency statistic achievements, extract feature words based on relative frequency, which results to better distinction degree between the defined classes and undefined classes. At last, the experiment has proved the feasibility and effect of this method.
%K Text Feature Extraction
%K Feature Vector
%K Evaluation Function
%K Relative Word
%K frequency<br>特征抽取
%K 特征向量
%K 评估函数
%K 相对词频
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=6D161B2012BA2BB3&yid=2DD7160C83D0ACED&vid=BC12EA701C895178&iid=E158A972A605785F&sid=EA389574707BDED3&eid=96C778EE049EE47D&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=5&reference_num=3