[Asrg] Re: REDIRECt to ASRG RE: Reputation systems

["John R Levine" <johnl at iecc.com>]

I agree.  It's quite appropriate for the ASRG IAR (identity,
authentication, and reputation) subgroup, on the list iar at asrg.sp.am.

> I think that this is getting into an ASRG question.
>
> If we create a graph of false positives vs false negatives we get
> an L shaped curve for most filtering technologies that are
> parameterizable and a point for a non perameterized technology
> such as a blacklist.
>
> Rather than arguing this point round and round does anyone have
> a ready made graph with the various blacklists plotted on it so
> that we could make a useful comparison?
>
> There are two reasons why a list would have more false positives,
> the listing criteria/application thereof could be wrong or the
> list could be more aggressive in listing more spam sources.
>
> If List-A listed 100 addresses and 80 were wrong this would result
> in fewer false positives than List-B listing 1,000,000 addresses
> with 800 wrong. So there is a discrimination function here...


Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Information Superhighwayman wanna-be, http://iecc.com/johnl, Mayor
"I dropped the toothpaste", said Tom, crestfallenly.

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