# Naïve Bayes vs Bayes classifier

While studying the naive Bayes classifier, two questions came to mind:

1. When (if this can happen) is the naive Bayes classifier equivalent to the Bayes classifier?
2. Why do I usually read in textbooks that naive Bayes is popular? What makes it so "popular"?
• The "naive" independence of features assumption makes the calculations multiples (or sums in log space) which is convenient to calculate. It is relatively easy to get class probabilities and provides a sort of baseline for model comparison. The popularity is because it would the model to "beat". – knk Dec 28 '18 at 22:08