PageRank is a
link analysis algorithm, named after
Larry Page,
[1] used by the
Google Internet
search engine that assigns a numerical weighting to each element of a
hyperlinked set of documents, such as the
World Wide Web, with the purpose of "measuring" its relative importance within the set. The
algorithm may be applied to any collection of entities with
reciprocal quotations and references. The numerical weight that it assigns to any given element
E is also called the
PageRank of E and denoted by
PR(E). The name "PageRank" is a
trademark of Google, and the PageRank process has been
patented (
U.S. Patent 6,285,999). However, the patent is assigned to
Stanford University and not to Google. Google has exclusive license rights on the patent from Stanford University. The university received 1.8 million shares of Google in exchange for use of the patent; the shares were sold in 2005 for
$336 million.
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