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comparison scripts/statistics/models/logistic_regression_derivatives.m @ 5428:2a16423e4aa0

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[project @ 2005-08-23 18:38:27 by jwe]
author jwe
date Tue, 23 Aug 2005 18:38:28 +0000
parents 4c8a2e4e0717
children 93c65f2a5668
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5427:a92afe70fb8d 5428:2a16423e4aa0
22 ## Called by logistic_regression. Calculates derivates of the 22 ## Called by logistic_regression. Calculates derivates of the
23 ## log-likelihood for ordinal logistic regression model. 23 ## log-likelihood for ordinal logistic regression model.
24 ## @end deftypefn 24 ## @end deftypefn
25 25
26 ## Author: Gordon K. Smyth <gks@maths.uq.oz.au> 26 ## Author: Gordon K. Smyth <gks@maths.uq.oz.au>
27 ## Adapted-By: KH <Kurt.Hornik@ci.tuwien.ac.at> 27 ## Adapted-By: KH <Kurt.Hornik@wu-wien.ac.at>
28 ## Description: Derivates of log-likelihood in logistic regression 28 ## Description: Derivates of log-likelihood in logistic regression
29 29
30 function [dl, d2l] = logistic_regression_derivatives (x, z, z1, g, g1, p) 30 function [dl, d2l] = logistic_regression_derivatives (x, z, z1, g, g1, p)
31 31
32 ## first derivative 32 ## first derivative