However, the model probabilities need be memorized for Bayesian filtering
recursion in the estimation cycle.
Users who decide desktop software is the right choice should look for a product that adds its controls to an e-mail program's toolbar, uses Bayesian filtering
, and is frequently updated online.
goes beyond identifying spam with keywords and headers; it uses a statistical approach and analyzes the entire context of e-mail to differentiate between valid email and spam.
Content tools that run Bayesian filtering
and heuristics text analyses on messages are no longer as effective as they once were on their own," noted Michael Hyatt, president of BlueCat Networks, Inc.
SpamAssassin, which is built into several different e-mail client plug-ins, uses a type of statistical analysis known as Bayesian filtering
to help it learn from existing spam to identify unfamiliar spam more accurately, theoretically getting better and better over time.