Chapter 4. Text Classification

This chapter provides a brief introduction to text classification and also provides you with an example of the Naïve Bayes algorithm, developed from scratch, in order to explain how to turn an equation into a code.

In this chapter we will cover:

  • Learning and classification
  • Bayesian classification
  • Naïve Bayes algorithm
  • E-mail subject line tester
  • The data
  • The algorithm
  • Classifier accuracy
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