if the Google function for determining PR vote score from one site to a site it links to is: PR(A) = (1-d) + d(PR(t1) / C(t1) + PR(tn)/C(tn) then what I'm wondering is , has anyone experimented with the score to see if its relative ..or if it accumulates? as simple example, say a site is linked back to your site and is giving a PR score of PR .963 and then say another site is linked back to your site giving a score of PR .543 I've always assumed the score does not add itself as in .963 + .543 = PR 1.506 Total new PR to your site. or does it? Is there another algorithm not released by Google that would show how it uses this to derive another percentage score? I just dont believe the search engines wouldv'e made it that easy. So I'm assuming they take 100 scores that might be linked back to your site, they compare this to your current PR score without their inclusion , and then get an average? so if your totalPR score coming back was that example mentioned PR 1.506 and if your site was say a PR4 would that become additive as in PR 4 + PR 1.506 = PR 5.506 OR is it relative in some algorithm like a percentage? As in if your site is PR4 ..and if the total highest PR is 10 then your site is 40% of the 100% total score. ..and this new example PR 1.506 is say only 1.5 % of the possible total 100% score of PR 10 but with relative comparisons compared to your site, the 1.5% it is 2.66% of your PR 4 so obviously when using relative math, a 2.66% is a whole different thing when its 2.66% of PR 10 or 2.66% of PR4 so maybe if they look at it as: if a link score is a relative 1.5% compared to your PR 4 and if your PR4 is technically only 40% Then your score was reduced by 60% according to the total score. So then they could take the 1.506 score you received and reduce it by 60% making it .9036 It all depends if the score you get from other sites is accumulative which would be great! but i highly suspect that wouldnt be the case, because PR scores would get built up to quickly. So if they are relative to the total 100% PR 10 measurement scale. where your 1.506 / 100% = .9036 then what if you were getting links back from say 4sites. If they reduced the total score relative to the 100% total PR 10 and say you were left with the scores of site 1 = .9036 site 2 = .5436 site 3 = .7453 site 4 = .6352 So then would these scores be accumulative or would the search engines average them? I doubt they could straight out average them as that wouldnt be fair .since a site with one link of .9056 would stay the same while a site with .9056 AND a link with .5534 would get averaged into a lower score between those two. Is there anyone that knows for certain which logic is used to sum the scores together? because so far I'm just assuming these scores would most likely by highest probability be getting reduced compared to highest100% PR score (which sets the standard measurement) but do those scores then become accumulative ? so the 4 site example above would become total added PR score of 2.8277 and if this was added to your original PR 4 site..you would then have a total new PR 6.8 OR maybe Im just over thinking it ..and maybe the original formula reduces the numbers in the first function , and then those scores become accumulative. If scores are accumulative and not percentage reduced relative to 100% PR 10 ...then i think I figured somethin out Anyone experiment with the numbers and scores enough to know for sure? Hello? .. lol
Very interesting article, the fact is no one knows the "true" Pagerank calculation formula, this is a kept secret by Google for obvious reasons. I would assume the value is absolute.