对文档与主题层的向量表示进行简化，设计与实现了一个主题搜索机器人原型。
Simplifying the vector representation of documents and topic levels, a prototype of the focused crawler is designed and implemented.
对文档与主题层的向量表示进行简化，设计与实现了一个主题搜索机器人原型。
Simplifying the vector representation of documents and topic levels, a prototype of the focused crawler is designed and implemented.
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