[R] Testing additive nonparametric model

Donal O'Neill donal.oneill at nuim.ie
Tue Apr 3 10:36:04 CEST 2007

I have estimated a multiple nonparametric regression using the loess 
command in R. I have also estimated an additive version of the model using 
the gam function. Is there a way of using the output of these two models to 
test the restrictions imposed by the additive model?

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