[R] comparing fit of cubic spline

Ben Bolker bolker at zoo.ufl.edu
Mon May 21 18:05:16 CEST 2007

Thomas Reed <tom.reed <at> ed.ac.uk> writes:

> I want to compare the fit of a quadratic model to continuous data, with that
> of a cubic spline fit. Is there a way of computing AIC from for e.g. a GAM
> with a smoothing spine, and comparing this to AIC from a quadratic model?
  Why don't you try AIC() on each of the fitted models and
see what happens?  In general R can compute log-likelihoods
and AICs for most fitted model objects ...  If it doesn't work,
you can post your simple example to the list and get more
advice then ...

  Ben Bolker

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