Design of Improved Web Crawler By Analysing Irrelevant Result

A key issue in designing a focused Web crawler is how to determine whether an unvisited URL is relevant to the search topic. Effective relevance prediction can help avoid downloading and visiting many irrelevant pages. In this module, we propose a new learning-based approach to improve relevance prediction in focused Web crawlers. For this study, we chose Naïve Bayesian as the base prediction model, which however can be easily switched to a different prediction model. The performance of a focused crawler depends mostly on the richness of links in the specific topic being searched, and focused crawling usually relies on a general web search engine for providing starting points. Key Terms: URL; focused crawler; classifier; relevance prediction; links; search engine; ranking Full Text: http://www.ijcsmc.com/docs/papers/August2013/V2I8201356.pdf