識別モデル(discriminative model)と生成モデル(generative model)

  • Generative models can generate new data instances.
  • Discriminative models discriminate between different kinds of data instances.

More formally, given a set of data instances X and a set of labels Y:

  • Generative models capture the joint probability $p(X, Y)$, or just $p(X)$ if there are no labels.
  • Discriminative models capture the conditional probability $p(Y | X)$.

REFERENCES:

  • https://developers.google.com/machine-learning/gan/generative