The algorithm is the core of the topic search engine and determines the search efficiency and quality.

主题搜索器的搜索算法，是搜索引擎的核心，它决定了搜索引擎的搜索效率和质量。

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Firstly, based on the design idea of topic search engine, architecture and function modules of the system are analyzed.

首先，借鉴主题搜索引擎的设计思想，分析系统的总体架构和功能模块。

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Based on the analysis and comparison of the advantages and disadvantages of the existing topic search algorithms, the key factors of improving search efficiency are presented.

在分析和比较现有的主题搜索算法的优缺点的基础上，归纳了提高搜索效率的几个关键因素。

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Then a topic crawler system was designed and implemented, employing topic sensitive Hyperlink-Induced Topic Search (HITS) to predict the priority of fetched Web pages.

在此基础上设计并实现了一个主题爬虫系统，该系统利用主题敏感HITS来计算网页优先级。

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Then a topic crawler system was designed and implemented, employing topic sensitive Hyperlink-Induced Topic Search (HITS) to predict the priority of fetched Web pages.

在此基础上设计并实现了一个主题爬虫系统，该系统利用主题敏感HITS来计算网页优先级。

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