寻找最优的算法是计算机科学基础研究的方向之一，对数据进行排序或从电子信号中过滤掉噪音都是非常有效的方法。

A t its most fundamental, computer science is about the search for better algorithms - more efficient ways for computers to do things like sort data or filter noise out of digital signals.

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这篇论文主要研究了面向主题的搜索中的两个关键算法——网页过滤和链接排序，同时研究了搜索器的实现技术。

This paper is going to deal with two main algorithms in Focus crawling, these being web page filtration and URL ordering.

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