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Mining of Massive Datasets by Anand Rajaraman, Jeffrey David Ullman

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5 Link Analysis

One of the biggest changes in our lives in the decade following the turn of the century was the availability of efficient and accurate Web search, through search engines such as Google. While Google was not the first search engine, it was the first able to defeat the spammers who had made search almost useless. Moreover, the innovation provided by Google was a nontrivial technological advance, called “PageRank.” We shall begin the chapter by explaining what PageRank is and how it is computed efficiently.

Yet the war between those who want to make the Web useful and those who would exploit it for their own purposes is never over. When PageRank was established as an essential technique for a search engine, spammers invented ways ...

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