[unrev-II] Group Trust Indeces

From: Grant Bowman (grant@suse.com)
Date: Mon Feb 19 2001 - 16:50:02 PST

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    Does someone here have enough experience with what a Group Trust Metric
    is to give some background on it? It sounds interesting and may have some
    applications here. http://www.advogato.org/ uses these for Trust metrics on
    their site to validate news and opinions. It's explained at
    http://www.advogato.org/trust-metric.html I have not heard of any
    other algorithms before. I have included the conclusion below.


    -- Grant Bowman                                   grant@suse.com
    -- SuSE                                    +1-510-628-3380 x5027
    -- 580 Second Street, Suite 210              fax +1-510-628-3381
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    The trust metric used in Advogato has a property not known in any previous trust metric: resistance to catastrophic failure in the face of a sufficiently massive attack. Instead, the number of bad nodes accepted scales linearly, and with a fairly small constant, with the number of certificates from valid accounts to bogus ones. It is also easy to compute efficiently and fairly simple to understand. As such, it should find applications in security infrastructures, as well as defining online communities, reliably excluding spammers, trolls, and other common annoyances.

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