On Fri, 09 Oct 2009 23:40:01 -0700 Ted Mittelstaedt <t...@ipinc.net> wrote:
> > I know that it seems like the idea of building up "meta" rules with > a lot of small rules will give you a more accurate hit rate, but > this is one of those non-intuitive things that can be shown by > statistical mathmatics, that is that the concept won't work. Or > rather, it won't work any better than the existing paradigm. I think you just just made that up. It clearly depends on the circumstances. If two rules correlate strongly in spam and weakly correlate or anti-correlate in ham, there's a case for creating a meta rule. In some cases it's possible to create useful meta-rules out of rules that aren't worth scoring individually.