lecture17-linkanalysis-handout-6-per

Call this the base set 6 introducon to informaon

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Unformatted text preview: sed   Hub pages are good lists of links on a subject.   e.g., Bob s list of cancer ­related links.   Pagerank s*ll very useful for things like crawl policy   Authority pages occur recurrently on good hubs for the subject.   Best suited for broad topic queries rather than for page ­finding queries.   Gets at a broader slice of common opinion. Introduc)on to Informa)on Retrieval Sec. 21.3 Hubs and Authori*es Introduc)on to Informa)on Retrieval S ec. 21.3 The hope   Thus, a good hub page for a topic points to many authorita*ve pages for that topic.   A good authority page for a topic is pointed to by many good hubs for that topic.   Circular defini*on  ­ will turn this into an itera*ve computa*on. AT&T Alice Authorities Hubs ITIM Bob O2 Mobile telecom companies Introduc)on to Informa)on Retrieval Sec. 21.3 Introduc)on to Informa)on Retriev...
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