07.b Naive Bayesian Classifiers

Naïve Bayes is a probabilistic classification method based on Bayes’ theorem (or Bayes’ law) with a few tweaks. Bayes’ theorem gives the relationship between the probabilities of two events and their conditional probabilities. Bayes’ law is named after the English mathematician Thomas Bayes.

Taking a continuous variable and grouping the instances by interval, such as salary bands

The probability of the the underlying condition (i.e. purchasing = 0.12) multiplied by the conditional probabilities (i.e. night | purchase = 0.32) multiplying each in turn.