using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.Text.Regularexpressions;

namespace?Test.TFIDF
{
????class?IF_IDF
????{
????????///?

????????///?獲取拆分后的詞組以及每個詞的出現(xiàn)次數(shù)
????????///?

????????///?
????????///?
????????public?Dictionary?GetWordsFrequnce（string?text）
????????{
????????????
????????????Dictionary?dictionary?=?new?Dictionary（）;
????????????Regex?regex?=?new?Regex（@“[\u4e00-\u9fa5]“）;//分揀出中文字符
????????????MatchCollection?results?=?regex.Matches（text）;
????????????int?temp;
????????????foreach?（Match?word?in?results）
????????????{
????????????????if?（dictionary.TryGetValue（word.Value?out?temp））
????????????????{
??????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????6018??2012-07-22?20:19??IFIDF.cs