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Which models of the data include interaction terms?

Recall from the video that interaction terms involve products of features.

Suppose we have two features x and y, and we use models that process the features as follows:

  1. βx + βy + ββ
  2. βxy + βx + βy
  3. βx + βy + βx^2 + βy^2

where β is a coefficient in your model (not a feature).

Which expression(s) include interaction terms?

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