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Problem Addressed

Problem Addressed. Attempts to prove that Web Crawl is random & biased image of Web Graph and does not assert properties of Web Graph Understanding the Hyperlink structure has allowed the design of Algorithms like PageRank, HITS etc. Approach.

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Problem Addressed

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Presentation Transcript

  1. Problem Addressed • Attempts to prove that Web Crawl is random & biased image of Web Graph and does not assert properties of Web Graph • Understanding the Hyperlink structure has allowed the design of Algorithms like PageRank, HITS etc

  2. Approach • Generally authors use sociological hypothesis to model the web graphs & compare the graphs with existing crawls • This paper attempts to model the web crawling process using only Zipf’s law but arrive at results comparable to existing web graph models.

  3. Criticism • Uses Zipf’s law to model the crawling process, but also uses Zipf’s law in evaluation • Most of the evaluation criteria used are commonly observed in graphs following Zipf’s law • Concludes that Web Crawls are different from Web Graphs without proving it

  4. Relation to Course • Closely related to Social Networks as it discusses Zipf’s law, Small World Phenomenon, A/H, Page Ranks etc. • Related to the study of Crawlers

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