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Topic: hyperlinks as bets: pagerank as artificial market (Read 644 times) |
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amichail
Senior Riddler
Posts: 450
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hyperlinks as bets: pagerank as artificial market
« on: Jun 28th, 2007, 6:29pm » |
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When page X links to Y, then the pagerank of X goes up (down) if the pagerank of Y goes up (down). Would such a thing make sense? Is it prone to spamming? What sort of formula would you use for this modified pagerank computation?
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Grimbal
wu::riddles Moderator Uberpuzzler
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Re: hyperlinks as bets: pagerank as artificial mar
« Reply #1 on: Jun 29th, 2007, 2:09am » |
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I didn't see first that it is the reverse of the usual relationship. The linking page gets the reputation of the linked page. That would be too easy, wouldn't it? Make random searches, save the highest-ranking result and link to these. That would boost your ranking.
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Barukh
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Re: hyperlinks as bets: pagerank as artificial mar
« Reply #2 on: Jun 29th, 2007, 4:23am » |
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on Jun 28th, 2007, 6:29pm, amichail wrote:What sort of formula would you use for this modified pagerank computation? |
| The usual PR of a page U sums over all the links to U (back-links). In this modified version, the sum would be over all the pages U links to (forward-links).
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amichail
Senior Riddler
Posts: 450
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Re: hyperlinks as bets: pagerank as artificial mar
« Reply #3 on: Jun 29th, 2007, 6:05am » |
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on Jun 29th, 2007, 2:09am, Grimbal wrote:I didn't see first that it is the reverse of the usual relationship. The linking page gets the reputation of the linked page. That would be too easy, wouldn't it? Make random searches, save the highest-ranking result and link to these. That would boost your ranking. |
| But it looks at CHANGES in (modified?) pagerank. The question is whether all such approaches are easy to spam.
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