View Full Version : PageRank Explained Mathematically
JohnW
12-06-2006, 11:29 PM
The American Mathematical Society has released a fairly (almost) understandable explanation of Google PageRank.
http://www.ams.org/featurecolumn/archive/pagerank.html
briggidere
12-07-2006, 05:42 AM
i used to think is was pretty good at maths. i now know otherwise.
it's like reading chinese to me. not the text, the formulas. i can read it 100 times and i'll still not get it.
The eigenvalues are basics in matrix calculation.
http://en.wikipedia.org/wiki/Eigenvalue
Should be not THAT complicated.
An equation like:
X + Y = 1
2X - Y = 3
Is a normal matrix ( using matlab notation):
[[1 1] [2 -1] ] [x y ]ī = [ 1 3]ī
Then you solve with the eigenvalues finding your PR.
BUT..... What happen if you have 1000 web sites linking to you? and you donīt know all the websites even!? ( only google knows)
Thats the complicated thing, find the values to feed the matrix...