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gcv

PURPOSE ^

generalized cross-validation.

SYNOPSIS ^

function g=gcv(varargin)

DESCRIPTION ^

 generalized cross-validation.

 Usage: g=gcv(varargin)


 Author: Catherine Loader.

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function g=gcv(varargin)
0002 % generalized cross-validation.
0003 %
0004 % Usage: g=gcv(varargin)
0005 %
0006 %
0007 % Author: Catherine Loader.
0008 
0009 fit = locfit(varargin{:});
0010 rs = rsum(fit);
0011 
0012 df0 = rs(1);
0013 df1 = rs(2);
0014 llk = rs(3);
0015 n = size(fit{1}{1},1);
0016 gc = -2*n*llk/((n-df0)^2);
0017 g = [llk df0 df1 gc];
0018 
0019 return;

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