False Positives Are A Fact Of Life In Spam Filtering
from the type-I-and-type-II-errors... dept
Spam filtering companies are now saying that the "collateral damage" of falsely tagging legitimate email as spam is "inevitable", and it's just something we need to deal with. It's a simple trade-off. The fewer false positives you end up with, the more spam is going to get through as well. Still, it appears that some of the filtering systems are getting pretty good. My own combination of filters is at the point where, out of about 2500 spam emails per week, I'm finding maybe 2 to 3 that are false positives (though, there's a chance that some are just getting deleted), and about 5 to 10 actually slip through the filters and make it to my in-box. Those are pretty good percentages. Still, not everyone is setting up filters, and as someone in the article points out, the real solution needs to be a combination of many factors, from technology, education and government.
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Spambayes - no false positives
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