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[Asrg] Re: greylisting with whitelist of good mailservers

2006-02-09 10:07:35
william(_at_)completewhois(_dot_)com wrote:

The algorithms I thus intend to try are:
 
         MA(n)*n + S(n+1)
MA(n+1)= ----------------   Where MA(x) is arithmetic mean at step x
               n+1          with S(x) being actual score at step x

That's just the normal MA.
 
I also think that some kind of multiplier should be applied
so that latest data has highier weight then previous one, so
this endup being:
 
           MA(n,w)*n + S(n+1)*w    Where MA(x,w) is arithmetic mean
MA(n+1,w)= ------=-------------    at step x with weight w (w>1)
                  n + w

You could get a similar effect for e.g. n > 99 with

            M99(n)*99 + S(n+1)
  M99(n+1)= ------------------   
                  100         
-- 
Frank



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