Module polynomial_features 

Polynomial features: generate polynomial and interaction features.

Given input features [a, b] and degree 2, this transformer generates:

• [1, a, b, a², a·b, b²] (default — interaction_only = false)
• [1, a, b, a·b] (with interaction_only = true)

With include_bias = false, the constant column 1 is omitted.

This transformer is stateless — no fitting is needed. Call Transform::transform directly.

Structs

PolynomialFeatures

A stateless polynomial feature generator.