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Page rank calculated using lowest PR path?
Variable




msg:67630
 10:47 pm on Dec 9, 2004 (gmt 0)

I have a site:

domain.com

with an index.htm page that links to two pages on that site:

example.com/a.htm
example.com/b.htm

as well as to a third page:

example.com/c.htm

Now the index page has PR7 and under this arrangement a.htm, b.htm, and c.htm all have PR6.

However, I change c.htm so it also links to a.htm and b.htm and the next google PR update shows the following PR:

index page PR7
a.htm PR5
b.htm PR5
c.htm PR6

I am able to replicate this behavior from PR update to PR update if I remove and re-add the links on c.htm.

So it appears that PR is assigned using the longest path from the index page. Anyone else showing similar results?

[edited by: ciml at 10:36 am (utc) on Dec. 10, 2004]
[edit reason] Examplified [/edit]

 

DerekH




msg:67631
 1:13 pm on Dec 11, 2004 (gmt 0)

So it appears that PR is assigned using the longest path from the index page

I don' t see where that train of thought comes from. If you read the original paper about Page Rank, then whether or not you believe it is still wholly or mainly applied, you'll see that PR is calculated iteratively, so that it converges to a final value.

It's fairly easy, using a spreadsheet, to see PR moving about a closed system (not that even your example is a truly closed system).

If you believe in the iteration part of the algorithm, you'll see that PR flows about, and even if you try to route it to a particular page, that page then has more PR that it, itself, feeds back to others...
The stable state of the PR is not always what you'd expect.

But though I understand the "theory" you've come up with, I don't, unfortunately, believe it at all!
DerekH

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