http://issues.apache.org/SpamAssassin/show_bug.cgi?id=5376
------- Additional Comments From [EMAIL PROTECTED] 2007-08-07 10:46 ------- (In reply to comment #10) > I propose the following new > measurement. Let's call it the Findlay measurement: > > F(lambda) = 1 / (FN% + FP% * lambda) > > (Actually as defined above it's a function.) > > This is exactly equal to TCR on a balanced (50/50) corpus and doesn't have the > "undesirable" properties you mentioned. it's not bad, but it needs work I'm afraid. For example, take a look at this: fn=3 fp=1.5 f=0.0128205128205128 fn=18 fp=1.2 f=0.0128205128205128 in other words, if the FP% in this case dropped from 1.5% to 1.2%, that would be enough to disguise the FN% rate dropping from 3% to *18%*. ;) ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.
