> Hi Patrik, > > What are your dspam_stats? We have seen behavior like this in two > cases. In the first, training was done in a fashion where similar > messages to an impartial observer were trained as both spam and > innocent. The resulting schizophrenia gave poor results. In the > second, an inappropriate training mode was chosen relative to the > spam/not-spam message ratio. The usual culprit was using TEFT with > a very high spam to good mail ratio. This resulted in a disproportionate > amount of spam being trained versus the good message. This again > reduced the accuracy of DSPAM (That's how Bayesian statistics work.) > In both cases, accuracy was restored by reinitializing the corpus > in question using an appropriate training process and training mode > appropriate for the E-mail in question. > > Good luck, > Ken >
> Hi Patrik, > > What are your dspam_stats? We have seen behavior like this in two > cases. In the first, training was done in a fashion where similar > messages to an impartial observer were trained as both spam and > innocent. The resulting schizophrenia gave poor results. In the > second, an inappropriate training mode was chosen relative to the > spam/not-spam message ratio. The usual culprit was using TEFT with > a very high spam to good mail ratio. This resulted in a disproportionate > amount of spam being trained versus the good message. This again > reduced the accuracy of DSPAM (That's how Bayesian statistics work.) > In both cases, accuracy was restored by reinitializing the corpus > in question using an appropriate training process and training mode > appropriate for the E-mail in question. > > Good luck, > Ken > Hi Ken, My dspam_stats was sent as a reply to Steves mail so you should have got it? All mails that are not retrained as spam is treated as ham I guess? And I do retrain all spams coming through the filter. But what happens if other users (on the same machine) does not retrain at all? Will that affect my filtering? -Patrik ------------------------------------------------------------------------------ _______________________________________________ Dspam-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspam-user
