[Asrg] differential confidence

[Dave CROCKER]

Chris Lewis wrote:
> Dave CROCKER wrote:
>> Chris Lewis wrote:
>>>   Each of the numbers is
>>> scaled differently in a computation something like this:
>>>
>>> if (((complaints * cf + contentblocked * bf + trap * tf) / non-blocked)
>>>> 1) {
...
>> But you don't cite any of the "good" attributes, nevermind scaling factors, per 
>> your reference to good/bad.
> 
> Not quite - the counts in the numerator are "bads" and in the
> denominator the "goods".  Each of the counts have scaling factors
> (normalized so that "passed through"'s scaling factor is 1).

damn. apologies.  I missed the right-most part of the equation.

now that I'm seeing it, where is the factor for it (non-blocked * nbf)?


> I don't look at them as confidence indicators, but rather as scaling
> factors to derive some sort of notion of "what's the probability of a
> given email from this IP being spam?".

right. and i did see the difference in a 'factor' vs. a 'confidence' but skipped 
past that, since both are about determining an amount to discount the value.

d/
-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net