Re: Problems with Bayesian filtering (Example #2 from AOL)

[email protected] (Justin Mason) Wed, 25 Feb 2004 14:56:38 -0800
Newsgroups gmane.ietf.asrg.filtering
Message-ID <[email protected]>
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"Jesse Dougherty" writes:
>Any split-on-whitespace Naïve Bayes implementation will have a harder
>time on smaller messages (simply because there are fewer occurances of
>tokens).  JGC's (and a lot of other bayes implementations) have added
>other, non-word tokens which are more "deterministic".
>
>In our research, we've found that the smartest algorithms in the world
>suck with bad tokens and really strong tokens work very well even with
>simple algorithms.

Yep, that meshes with what SpamAssassin and spambayes both found as
well: the key to a good implementation of a Bayes-like classifier is the
tokenizer.  Several %age points of accuracy are made and lost there.

- --j.
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