Mastering .NET Machine Learning

Naïve Bayes

Naïve Bayes is a classification model that attempts to predict if an entity belongs to a series of predefined sets. When you aggregate all the sets together, you have a pretty good estimation of the final result. In order to illustrate, let's go back to the tennis example that we used when talking about decision trees.

We have the following observations for two weeks:

Day	Outlook	Temperature	Humidity	Wind	PlayTennis?
0	sunny	Hot	High	weak	No
1	sunny	Hot	High	strong	No
2	overcast	Hot	High	weak	Yes
3	rain	Mild	High	weak	Yes
4	rain	Cool	Normal	weak	Yes
5	rain	Cool	Normal	strong	No
6	overcast	Cool	Normal	strong	Yes
7	sunny	Mild	High	weak	No
8	sunny	Cool	Normal	weak	yes
9	rain ...