tf-idf程序，朋友写的，很好。对中文句子进行相似度计算，有计算句子权值、排序、两两句子之间的相似度计算。有语料，可以直接运行-tf-idf program, friends wrote, very good. Similarity calculation for Chinese sentences, the sentence weights are calculated, sort, twenty-two similarity between sub-calculation. A corpu