Bayes Probability

Mark Nienberg mark at TIPPINGMAR.COM
Wed May 7 19:14:08 IST 2003


That's not the way it works.  Bayes just returns a score, like all of the other
spamassassin tests.  The Bayes score is added to the other scores and
compared to whatever you set your limits to.  Here are the default scores
from "/usr/share/spamassassin/50_scores.cf".  They are negative for
probabilities less than 40% and positive for probabilities greater than 60%.
They are zero for the probabilities near 50%.

score BAYES_00 0 0 -6.400 -6.400
score BAYES_01 0 0 -6.600 -6.600
score BAYES_10 0 0 -6.400 -5.801
score BAYES_20 0 0 -5.801 -3.101
score BAYES_30 0 0 -1.246 -1.604
score BAYES_40 0
score BAYES_44 0
score BAYES_50 0
score BAYES_56 0
score BAYES_60 0 0 2.002 1.160
score BAYES_70 0 0 2.637 2.188
score BAYES_80 0 0 4.300 2.807
score BAYES_90 0 0 4.126 2.854
score BAYES_99 0 0 4.300 2.791



On 7 May 2003 at 10:43, Paul Hamilton wrote:

> Hi All,
>
> Could someone advise us what level of percentage probability
> does Bayes have to reach before it deems a message to be Spam?
>
> Thanks in advance
>
> Paul H.


--
Mark W. Nienberg, SE
Tipping Mar + associates
1906 Shattuck Ave, Berkeley, CA  94704
visit our website at http://www.tippingmar.com



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