How We Chose the Bayesian Analyzers

For the purposes of illustration, we wanted to show differently architected solutions that were widely used and that had good accuracy rates. The packages we cover in this chapter include

  • CRM114

  • bogofilter

  • Anti-Spam SMTP Proxy (ASSP)

We chose CRM114 due to its widespread use and accuracy. CRM114 (the Controllable Regex Mutilator) is a regular expression filter that actually predates most of the other more recent Bayesian methods and packages. However, Bayesian support has been extended with a Markovian system and is similar enough to the rest of the packages here that decided to include it in our discussion. CRM114 is written in ANSI C and is actually a language designed specifically for filters and offers significant ...

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