From: jm@jmason.org  Wed Sep 18 12:36:24 2002
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To: "Fox" <lds0062@cdc.net>
Cc: "Justin Mason" <yyyy@example.com>, razor-users@example.sourceforge.net
Subject: Re: [Razor-users] HTML Table - Razor Stats using -lm 4 
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   of "Tue, 17 Sep 2002 18:01:40 EDT." <003d01c25e95$ccf547c0$7c640f0a@mfc.corp.mckee.com> 
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"Fox" said:

> Before or after I whitelisted all the legit mailing lists that Razor is
> tagging?  I had one false positive in the last four days.  Razor tagged some
> guys person-to-person message because he used an ostrich-in-your-face jpeg
> that is probably pretty popular on the net, and -lm 4 means any single
> attachment in a message that is razored, razors the whole message, if I
> understand it correctly.

Razor folks: is -lm documented anywhere?   BTW, I notice all my *.conf
files in ~/.razor use "lm = 4" by default anyway.

> No, I am not keeping official tally of false positives.  I need to write a
> html interface to do it, and then it would be easy.  I imagine you want
> false positive rate per filter.  I will work on it tomorrow, and maybe in a
> week I will have some stats for false positives.

Yeah, that'd be cool -- much appreciated!   comparing text classifiers
like spam filters, without tracking FPs, is not good.   After all, "cat >
/dev/null" gets a 100% hit rate, but without the FP rate figure of, let's
say 90%, you'd never know it was a bad thing to do ;)

--j.

