Perceptron is a rule-weighting algorithm based on artificial neural networks ("perceptrons") instead of \["GeneticAlgorithm"\]s. It is based on error back propagation by gradient descent and includes several security and accuracy-related modifications. It has replaced the GA in the [RescoringProcess] for [SpamAssassin] 3.0.unmigrated-wiki-markup Wiki Markup
Some info may be found at \[http://www.spamassassin.org/full/3.0.x/dist/masses/README.perceptron masses/README.perceptron\] and at [RunningPerceptron].