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Re: st: Probit partial linear regression


From   Maarten buis <[email protected]>
To   [email protected]
Subject   Re: st: Probit partial linear regression
Date   Tue, 10 Apr 2007 07:49:30 +0100 (BST)

--- GUO Lei <[email protected]> wrote:
> Seems though mfp is not what i'm looking for. Because I do not want
> to impose any specification on some key factor, but mfp seems still
> has restrion on the regression form

No, a fractional polynomial, is not the same as polynomial regression.
a) fractional polynomials are much more flexible functions, and b) we
don't a priori specify which powers to estimate, but -mfp- finds those
powers for us. So, I would happily call -mfp- non-parametric.

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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