The user modeling technique is one of the most important task in constructing the information filtering system.

基于内容的文本过滤关键在于建立语义层次上的用户模板。

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Next, this paper discusses the package filtering and content filtering and describes the design and implementation of information filtering system.

接下来，本论文重点介绍了在信息过滤中主要使用的包过滤和内容过滤，并描述了信息过滤系统的设计与实现。

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To meet this need, this paper puts forward a model of the individualized information filtering system, introduces its framework, and elaborates its key technologies.

针对这种需要，提出了一种个性化信息过滤系统的模型，介绍了其总体结构，并深入分析了其关键技术。

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