Hello team,

Can I double check with you that I understand correctly what the PolynomialFeatures() is doing under the hood?

If I set it like this:

poly = PolynomialFeatures(degree=3, interaction_only=False, include_bias=False)

and I fit it on a dataset with 3 variables, a,b and c.

Am I correct to say that the fit() method creates all possible combinations like this:

a;

b;

c;

(a+b)^2

(a+b)^3

(a+c)^2

(a+c)^3

(c+b)^2

(c+b)^3

(a+b+c)^2

(a+b+c)^3

And the transform() generates the expansion, without the constant that multiplies the interactions and avoiding duplicated terms after the expansion?

Thanks for the help.

Kind regards

Sole

_______________________________________________
scikit-learn mailing list
scikit-learn@python.org
https://mail.python.org/mailman/listinfo/scikit-learn