View Full Version : Data on false positives

02-20-2007, 04:56 PM
What data is there on false positives vs junk score and number of messages processed? That is, what fraction of false positives are <95, <90, <85, ... after 10,000, ..., 50,000 messages (assuming false positives and false negatives have been properly identified along the way)?

Michael Tsai
02-20-2007, 07:46 PM
SpamSieve does not calculate this statistic. Speaking from my own experience, I don’t recall ever having a false positive with a score above 80.

02-21-2007, 12:00 AM
Thanks for your response. A follow-up question:

On page 57, the manual says "Message with scores above 90 are almost certainly spam." Was that statement based on (unvalidated?) reports from the field or was that simply a more conservative assessment based on your own experience?

Michael Tsai
02-21-2007, 10:36 AM
It’s based on my experience looking at lots of log files from SpamSieve users.