Absrtact: Text classification is the base of information retrieval and data mining and it is widely used in web data mining and search engine.

摘要：文本分类是信息检索和数据挖掘的基础，被广泛应用于网络数据挖掘及搜索引擎等方面。

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WEB page content structure is very helpful for applications such as information retrieval, classification, information extraction etc.

页面内容结构分析在WEB信息检索、分类和抽取等方面有重要作用。

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