Because without a few hundred messages, it would be completely and utterly useless?  
It would be like meeting an airline pilot who was 5'7" tall and had a scar on his left 
cheek and wore his hat backwards.  Bayes would think that scars on left cheeks were as 
reliable an indicator of airline-pilotness as was an airline uniform.  All statistics 
are based upon having a statistically significant sample, and to tell the truth, a 
corpus of 200 hams / 200 spams is severely stretching it.
http://www.paulgraham.com/spam.html


> -----Original Message-----
> From: Ron Gilbert [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, September 02, 2003 10:54 AM
> To: [EMAIL PROTECTED]
> Subject: RE: [SAtalk] bayes feedback
> 
> 
> 
> >>I read here that bayes is only turned on after
> >>it learned from at least 200 spams AND 200 hams.
> >>That number could be more.  It only starts to be
> >>efficient after you got say 1000 of both.
> 
> Can someone explain to me why SA won't start using bayes 
> until it's seen
> several hundred messages?  > 


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