Understanding Bayes’ Theorem

DS202 Blog Post

This video will help you grasp the intuition behind Bayes’ Theorem.

On Week 03 (Part II), I showed you the following equation and mentioned that it forms the basis for one of the algorithms we explore in this course, Naive Bayes.

\[ P(\mathbf{Y} = k | \mathbf{X} = x) = \frac{P(k)P(\mathbf{X}|\mathbf{Y}=k)}{\sum_{l=1}^{K}{P(l)P(\mathbf{X}|\mathbf{Y}=l)}} \]

The following video might help you understand the intuition behind the equation. Enjoy!