I don't understand the Bayes scoring logic

6 Mar 2005 00:08:52 -0000 

Hi folks

can anyone explain the logic behind this.
Various spam gets tagged with the Bayes check but as follows

        *  0.4 BAYES_60 BODY: Bayesian spam probability is 60 to 80%
        *      [score: 0.6343]

        *  2.1 BAYES_80 BODY: Bayesian spam probability is 80 to 95%
        *      [score: 0.8695]

        *  1.9 BAYES_99 BODY: Bayesian spam probability is 99 to 100%
        *      [score: 1.0000]

So, a 60-80% probability scores 0.4
an 80-95% probability scores 2.1
and a 99-100% scores 1.3

Why does a 99-100% probability score less than an 80-95% probability???

Answers on a postcard please to..............

Cheers
Nigel

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