a crawler within a search engine Web Page → repository googlebot Google Text link Query analysIs 四a= G oo8 hits Text index Page Rank Ranker Slides 2007 Filippo Menczer, Indiana University School of Informatics Bing Liu: Web Data Mining. Springer, 200 Ch 8 Web Crawing by Filippo Menczer informaticsSlides © 2007 Filippo Menczer, Indiana University School of Informatics Bing Liu: Web Data Mining. Springer, 2007 Ch. 8 Web Crawling by Filippo Menczer A crawler within a search engine Web Text index PageRank Page repository googlebot Text & link Query analysis hits Ranker