self-classification的用法和樣例：
例句
- Text classification feature selection in text categorization is the first important problem to be solved.
摘要文本分類特徵選擇是文本自動分類中首先要解決的重要問題。 - Web page classification was one of the hot study problems in the domain of Internet Search currently.Now there were the classifiers based on text and the hyperlinks.
摘要網頁自動分類是當前互聯網搜索領域一個熱點研究課題，目前主要有基於網頁文本內容的分類和基於網頁間超鏈接結構的分類。
