Abstract: In the light of result returned currently by generalpurpose search engines being excessive, and having no strong similarity with the topic, this paper covers a technique of dividing the web page to chunks to implement a focused crawler. With this method, Crawler1, a prototype of a focused crawler has been realized. Experimental results indicate that Crawler1 has better performance. The number of topic web pages crawled by Crawler1 attains more than 55%.

Key words: topicspecific search, focused crawling, relevance analysis, page segmentation