What is the algorithm of Pagerank?
Today i want to show you the main formula for pagerank algorithm.
it is as follows
PR(A) = (1-d) + d (PR(T1)/C(T1) + … + PR(Tn)/C(Tn))
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
Did you understand it ? If not i will try to humanize this formula.
this formula tells that your pagerank is calculated as the sum of pagerank of the pages that give you backlinks divided by the number of the links that pages outlinks.
The pageranks are not integer actually. But people tell as i have a pagerank of x where x is an integer.
Asume that there is a 4 paged network Let them be (A,B,C,D)
A is linked by B,C,D then A =B+C+D
and B links to C as well
A=(B/2)+C+D
this is that simple.
After i look this formula carefully i understood that the links from page 0 links are not useful because (PageRank 0 / numberoflinks) equals to 0 again.
So my brilliant idea to link all my sites to this site failed. Except for pagerank 2 (Euro 2008) and pagerank 5 (forumsite).
If some of my pages have a pagerank increase then this may bring extra points to me so i am not changing them yet.
And i have read some document about the pagerank is not calculated on the fly. So the banners are not showing my real pagerank.
