[R] adaptive knot placement for splines

[Liaw, Andy]

Not TURBO, but BRUTO (bruto() in the mda package) proposed in the discussion
of that paper, or even MARS (mars(), also in mda).

Andy 

From: Simon Lin
> 
> Are there any R implementation of adaptive knot placement? No 
> need to be fancy. Something like stepwise selection by 
> Friedman and Silverman (1989)?
> 
> The implementation in polyspline is too specific for 
> lognormal distributions. 
> 
> Thanks!
> 
> Simon
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