What is PageRank?
Jul 25th, 2008 by sherlock Hit :: 388
PageRank is considers the importance of each page that casts a vote, as votes from some pages are considered to have greater value, thus giving the linked page greater value. We have always taken a pragmatic approach to help improve search quality and create useful products, and our technology uses the collective intelligence of the web to determine a page’s importance.
from: google.com
Source :: http://www.smiling-dolphin.com
It may look daunting to nonmathematicians, but the PageRank algorithm is in fact elegantly
simple and is calculated as follows:
where:
· PR(A) is the PageRank of a page A.
· PR(T1) is the PageRank of a page T1.
· C(T1) is the number of outgoing links from the page T1.
· d is a damping factor in the range 0 < d < 1, usually set to 0.85.
The PageRank of a web page is therefore calculated as a sum of the PageRanks of all pages
linking to it (its incoming links), divided by the number of links on each of those pages (its
outgoing links).
Source :: Google Hacks