What is Google PageRank?
PageRank is a family of algorithms for assigning numerical weightings
to hyperlinked documents (or web pages) indexed by a search engine.
Its properties are much discussed by search engine optimization (SEO)
experts. The PageRank system is used by the popular search engine
Google to help determine a page's relevance or importance.
As Google puts it:
> PageRank relies on the uniquely democratic nature of the web by
> using its vast link structure as an indicator of an individual
> page's value. Google interprets a link from page A to page B as
> a vote, by page A, for page B. But Google looks at more than the
> sheer volume of votes, or links a page receives; it also analyzes
> the page that casts the vote. Votes cast by pages that are
> themselves "important" weigh more heavily and help to make other
> pages "important."
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