> ASSP is currently re-inventing the wheel by building, optimizing, and
> updating a bayesian filter.

ASSP has been around for many years and is not "re-inventing the wheel". 
You have not been around ASSP for very long, as stated in your first email 
to the list on 04/21/2007, but that is no excuse for not doing your homework 
and making bogus claims like the above.

> Would it be worthwhile to explore replacing that engine with DSPAM?

Sure, if it offers a significantly better process for handling Bayesian 
filtering.  I think most everything is "worthwhile to explore".  I tend to 
be the "try it once before you say you don't like it" kind of person, for 
most things. :o)

> DSPAM is a very advanced bayesian filter that has (I believe) many more
> features and is potentially a lot smarter than the bayesian filter in
> ASSP. It also learns via incoming and outgoing mail, and can be trained
> via an email interface, just like the current filter.
> <snip>
> What does everyone here think about this?

Personally I think DSpam looks very promising.  Definately deserves 
watching.  I do not believe we need to consider adding it to ASSP at this 
time.  The Bayesian filter in ASSP works very well for the folks that put 
time into training it, however I believe Bayesian in general is somewhat 
depricated in value compared to contact based tests and other content based 
tests we use in ASSP.

Also there's this:
http://en.wikipedia.org/wiki/DSPAM
"at the spam filter test performed at TREC 2005[2] the best-performing DSPAM 
configuration had misclassification rates significantly worse than the 
leading filters in the test and far below stated levels of accuracy."
http://trec.nist.gov/pubs/trec14/papers/SPAM.OVERVIEW.pdf (2005 version)
http://trec.nist.gov/pubs/trec15/papers/SPAM06.OVERVIEW.pdf (2006 version)

Doug Traylor 


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