介绍自动文本分类的一个ppt，详细的介绍了自动文本分类的特征提取，分类算法以及评估。-Introduced an automatic text classification ppt, a detailed introduction of automatic text categorization of feature extraction, classification algorithms, as well as assessment.

< 大规模短文本的分类过滤方法研究>>,有兴趣的可以看一下-" " Classification of a large-scale short text filtering method " " , anyone interested can take a look

信息检索概述，大致对信息检索基础信息进行了介绍-Overview of information retrieval, information retrieval based on information generally was introduced