a system for ranking web pages developed by Google Inc. founders Larry Page and
Sergey Brin at Stanford University.
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. In essence, 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."
high-quality sites receive a higher PageRank, which Google remembers each time
it conducts a search. Of course, important pages mean nothing to you if they don't
match your query. So, Google combines PageRank with sophisticated text-matching
techniques to find pages that are both important and relevant to your search.
Google goes far beyond the number of times a term appears on a page and examines
all aspects of the page's content (and the content of the pages linking to it)
to determine if it's a good match for your query.
For more information
on PageRank see http://www.google.com/technology/
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