[bogofilter] bogotune weirdness

[Tom Anderson]

On Sun, 2004-05-09 at 21:46, Tom Allison wrote:
> db_cachesize=5
> robx=0.600000
> min_dev=0.465
> robs=0.0316
> spam_cutoff=0.081       # for 0.05% fpos (3); expect 0.02% fneg (1).
> #spam_cutoff=0.017      # for 0.10% fpos (7); expect 0.02% fneg (1).
> #spam_cutoff=0.001      # for 0.20% fpos (14); expect 0.02% fneg (1).
> ham_cutoff=0.450
> 
> 
> I just tried this on some of my sample files.
> 
> Can someone explain how you can get spam_cutoff < ham_cutoff and what 
> happens to the scoring when both conditions X<ham_cutoff and 
> X>spam_cutoff are met.

Your robx and min_dev would make it so that it couldn't happen to
individual tokens.  Anything in the range between spam_cutoff and
ham_cutoff is ignored due to your min_dev.  First seen tokens are scored
above the ham_cutoff.  And if the whole message scores in that range...
well then I don't know about that... unsure maybe?  

In any event, these values are simply unreasonable.  I'd pick values
that make sense according to theory.  If reality doesn't match theory,
then something is wrong with the programming, as it doesn't fit the
spec.

Tom