Automatic text classification and focused crawling

A focused crawler is a web crawler that traverse the web to explore information that is related to a particular topic of interest only. On the other hand, generic web crawlers try to search the entire web, which is impossible due to the size and the complexity of WWW. In this paper we make a survey of some of the latest focused web crawling approaches discussing each with their experimental results. We categorize them as focused crawling based on content analysis, focused crawling based on link analysis and focused crawling based on both the content and link analysis. We also give an insight to the future research and draw the overall conclusions.