[Spambayes] RE: Central Limit Theorem??!! :)

Anthony Baxter anthony@interlink.com.au
Sat, 28 Sep 2002 15:04:46 +1000


>>> Tim Peters wrote
> + How to compute a sensible score?
>   An honest-to-God probability can be computed from a z-score, and
>   I can supply code to do that (although I'd look on google first
>   for Python code that can already do that; a simple search over a
>   canned sorted list of (abs(zscore), probability) tuples is the
>   quickest way to get a good idea).

Isn't there actually _two_ z scores? "how much does it look like ham"
and "how much does it look like spam"? (I might be mis-understanding the
code here). In this case, isn't the scoring going to need to handle
"hey, both are greater than X sdevs, set it to 50%"

It seems like you'd actually end up with two cutoff numbers, or one
as a difference from 50%... 

Anthony
-- 
Anthony Baxter     <anthony@interlink.com.au>   
It's never too late to have a happy childhood.