JuliaAI / JuliaAI/MLJTransforms.jl
Make `InteractionTransformer` more useful
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@ablaom is already working on this.
Since Sep 15, 2026.
enhancement
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- Julia
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Description
If features are x, y, z, then this transformer only generates (with order=3) columns for x, y, z, xy, yz, xz, xyz, ie, no feature appears with degree higher than one, and there is no constant term. I suppose that is what "interaction" means?
But what about the common use case of polynomial regression on a single feature? You want 1, x, x^2, x^3, which this transformer won't give.
Perhaps we can add a parameter interaction=true which when false adds all the monomials up to specified order.
cc @olivierlabayle
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