Feast your eyes on this little beauty:
This is Bayes’ formula. It is the maths behind the Bayesian filtering used by spam-catching apps like SpamSieve, SpamFire and JunkMatcher.
Process Software offers a lucid and racy explanation of how Bayes’ forumula works to keep spam out of your Inbox. You will be surprised how interesting it is. I was.
Apple Mail’s built-in Junk Filter uses a different process called “Latent Semantic Analysis”.
“Mail.app’s Junk Filter is not like the others” contains a number of links to explanations of LSA and how it differs from Bayesian filtering.
Tags: Apple Mail, bayesian filtering, junk filter, latent semantic analysis, lsa, mail.app, spam