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Naïve Bayes

Representation. Probabilistic Graphical Models. Bayesian Networks. Naïve Bayes. Naïve Bayes Model. Class. (X i  X j | C) for all X i , X j. X 1. X 2. X n. Naïve Bayes Classifier. Class. X 1. X 2. X n. Naïve Bayes Classifier for Text I. Document Label.

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Naïve Bayes

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  1. Representation Probabilistic Graphical Models Bayesian Networks Naïve Bayes

  2. Naïve Bayes Model Class (Xi  Xj | C) for all Xi, Xj . . . X1 X2 Xn

  3. Naïve Bayes Classifier Class . . . X1 X2 Xn

  4. Naïve Bayes Classifier for Text I Document Label P(“buy” appears | Label) . . . cat dog buy

  5. Naïve Bayes Classifier for Text II cat dog buy sell … 0.001 0.001 0.02 0.02 … Document Label Financial Pets 0.02 0.03 0.003 0.001 … . . . W1 W2 Wn

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