Google's Page Rank

Google as the most common search engine in worldwide. The reason its provides better functionality and provide better results. It have one function called 'Page Rank', a sophisticated method to rank web documents.

Some common questions and answers about the PageRank:

What is PageRank?

To rank web documents based on the rank of those documents which link to it. Their rank again is given by the rank of documents which link to them. Therefore, the page rank of a document is determined recursively by the page rank of other documents.

What is PageRank Algorithm?

The PageRank algorithm was described by Lawrence Page and Sergey Brin. It is given by:


PR(A) = (1-d) + d(PR(L1)/C(L1)+PR(L2)/C(L2)+...+PR(Ln)/C(Ln))

where

PR(A) = PageRank of page A.

PR(Li) = PageRank of Pages Li which link to page A,

C(Li) = Number of outbound links on Page Li

d = damping factor which can be set between 0 and 1.