# 07.b Naive Bayesian Classifiers Flashcards

What is Naive Bayes

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.

In Naive Bayes what is discretisation of continuous variables

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

How do you calculate the overall probability of something in Naive Bayes

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.