Have you been plotting the columns of the model matrix against age, and
finding differences between replicates? If so, the differences that you see
are the differences induced by the *identifiability constraints* applied to
the different replicates. The identifiability constraint is that the
Hi, all
I want to choose same knots in GAM for 10 different studies so that they has
the same basis function. Even though I choose same knots and same dimensions
of basis smoothing, the basis representations are still not same.
My command is as follows:
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