Soumen Chakrabarti IIT Bombay 1999 43 Related work  WebWatcher, HotList and ColdList  Filtering as post-processing, not acquisition  ReferralWeb  Social network on the Web  Ahoy!, Cora  Hand-crafted to find home pages and papers  WebCrawler, Fish, Shark, Fetuccino, agents  Crawler guided by query keyword matches
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