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Posted to dev@spamassassin.apache.org by bu...@bugzilla.spamassassin.org on 2009/05/13 10:58:11 UTC

[Bug 5686] add OSBF/Winnow as an alternative to Bayes

https://issues.apache.org/SpamAssassin/show_bug.cgi?id=5686





--- Comment #22 from Justin Mason <jm...@jmason.org>  2009-05-13 01:58:10 PST ---
just a progress note.  This has been shelved, as the accuracy rates I get from
our implementation aren't good enough:

default "Bayes" from trunk:
  SUMMARY: 0.30/0.70  fp     0 fn   168 uh     8 us   535    c 222.30

latest OSBF-in-perl:
  SUMMARY: 0.30/0.70  fp     0 fn     7 uh   994 us   631    c 169.50


FNs are a good bit lower, but there's some wierd hacks like having to scale the
scores up by 10% which I'm not comfortable with.

It needs more work, and possibly some analysis of what osbf-lua does that the
perl code doesn't do.  I haven't done this since the license is incompatible,
and have been working from papers/published docs instead, but I don't think
they're quite the same anymore.

Anyway, if anyone wants to take over, the code's all in svn.


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