Building Machine Learning Systems with Python - Third Edition

Using Naïve Bayes to classify

Given a new tweet, the only part left is to calculate the probabilities:

Then choose the class as having the higher probability.

As for both classes, the denominator, , is the same, we can simply ignore it without changing the winner class.

Note, however, that we don't calculate any real probabilities any more. Instead, we are estimating which class is more likely given the evidence. This is another reason why Naïve ...