http://bugzilla.spamassassin.org/show_bug.cgi?id=4031





------- Additional Comments From [EMAIL PROTECTED]  2004-12-15 07:02 -------
Subject: Re:  bayesian scores lower for higher probability

On Wed, Dec 15, 2004 at 03:22:17AM -0800, [EMAIL PROTECTED] wrote:
> It could be a setup/install problem but... I wiped everything and 
> reinstalled.     
> Then I fed the learning engine with fresh spam, ham, false     
> positives/negatives. Results are the same. 1.9 BAYES_99,  2.1 BAYES_95. 

Of course they didn't change.  The scores aren't dynamic, they're generated
once before a release.

> 90% of false negative I had switching to 3.X could have been catch if score   
>   
> was linear.    

The "problem" here is that BAYES_99 causes FPs, which the perceptron handles by
lowering the score since a billion other rules usually hit on the spam.

This isn't a scoring issue, it's a learning/bayes issue, if anything.





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