bogotune results

Thu Mar 25 03:43:53 CET 2004

On Wed, 24 Mar 2004 21:20:24 -0500
Tom Allison wrote:

> Boris 'pi' Piwinger wrote:
> > 
> > 
> > Right. OTOH you can see any unsure as a failure.
> > 
> 
> I would think any Unsure to be a failure is a little over expectant.
> 
> If my assumption of what bogotune does is correct, I would have
> assumed a ham_cutoff just above the highest scoring ham and a
> spam_cutoff just below the lowest scoring spam.

Since a ham message _can_ score higher than a spam message, and vice
versa, this may not be what you want.  Consider ham_cutoff to be a bit
less than the lowest scoring spam and the spam_cutoff to be a bit higher
that the higest scoring ham.  That leaves an unsure range corresponding
to spam which score lower than ham.

>  However, I do not understand the min_dev/robx/robs contribution to 
> filtering well enough to comment on them in regard to the numbers that
> 
> bogotune might suggest.

They're interrelated in non-obvious ways.  Simply increasing one (or
all) of them doesn't lead to a clear increase (or decrease) in scores.
If they were related in some obvious way, we'd have a set of equations
to spit out the ideal parameters.  As it is, we have a program that does
some heavy duty number crunching and searching in order to come up with
a good set of parameters.

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