"The typical Bayesian spam filters learn to distinguish ham from spam just by reading thousands of emails, but is this all they can do? This essay shows step by step how to teach a Bayesian filter to play chess against a human, on Linux, with XBoard."
http://games.slashdot.org/games/05/07/20/0317215.shtml?tid=156&tid=111&tid=10
http://games.slashdot.org/games/05/07/20/0317215.shtml?tid=156&tid=111&tid=10