Google Pagerank Formula

Discussion in 'Google' started by mithil, Feb 12, 2010.

  1. #1
    Just wanted to know if Google still uses this Pagerank formula for calculating the pagerank for a website.

    PR(A) = (1 - d) + d * SUM ((PR(I->A)/C(I))

    Where:

    * PR(A) is the PageRank of your page A.
    * d is the damping factor, usually set to 0,85.
    * PR(I->A) is the PageRank of page I containing a link to page A.
    * C(I) is the number of links off page I.
    * PR(I->A)/C(I) is a PR-value page A receives from page I.
    * SUM (PR(I->A)/C(I)) is the sum of all PR-values page A receives from pages with links to page A..

    In other words: The PR of a page is determined by the PR of every page I that has a link to page A. For every page I that points to page A, the PR of page I is devided by the number of links from page I. These values are cumulated and multiplied by 0,85. Finally 0,15 is added to this result, and this number represents the PR of page A.
     
    mithil, Feb 12, 2010 IP
  2. brother_of_devil

    brother_of_devil Peon

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    #2
    Wrong place to ask :)

    I'm sure the idea of PR calculation is still around the same. But the exact formula is (and actually was) much more complex.
     
    brother_of_devil, Feb 12, 2010 IP
  3. imkane

    imkane Active Member

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  4. poker princess

    poker princess Member

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    #4
    poker princess, Feb 12, 2010 IP