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contagiousflowtoday at 1:02 PM1 replyview on HN

Page rank is trivially gamed by agents. You can make some malicious and some not malicious and have them link to each other.


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perfmodetoday at 1:32 PM

That’s exactly right for global PageRank, which is why I recommended Personalized PageRank specifically.

A cluster of sybil agents endorsing each other has no effect on your trust scores unless they can get endorsements from nodes you already trust.

That’s the whole point of subjective trust metrics, and formally why Cheng and Friedman proved personalized approaches are sybilproof where global ones aren’t.

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