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]> |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 "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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Exmh CVS iD8DBQFAPSgmQTcbUG5Y7woRAg2OAJ95TTgqMOOoMLqjA2fgb5FgYwjuhwCg3IZt Jda8nIpw4E+y2lkWomBIdvg= =fCuq -----END PGP SIGNATURE-----