annotate toolboxes/FullBNT-1.0.7/netlab3.3/mlppak.m @ 0:e9a9cd732c1e tip

first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function w = mlppak(net)
wolffd@0 2 %MLPPAK Combines weights and biases into one weights vector.
wolffd@0 3 %
wolffd@0 4 % Description
wolffd@0 5 % W = MLPPAK(NET) takes a network data structure NET and combines the
wolffd@0 6 % component weight matrices bias vectors into a single row vector W.
wolffd@0 7 % The facility to switch between these two representations for the
wolffd@0 8 % network parameters is useful, for example, in training a network by
wolffd@0 9 % error function minimization, since a single vector of parameters can
wolffd@0 10 % be handled by general-purpose optimization routines.
wolffd@0 11 %
wolffd@0 12 % The ordering of the paramters in W is defined by
wolffd@0 13 % w = [net.w1(:)', net.b1, net.w2(:)', net.b2];
wolffd@0 14 % where W1 is the first-layer weight matrix, B1 is the first-layer
wolffd@0 15 % bias vector, W2 is the second-layer weight matrix, and B2 is the
wolffd@0 16 % second-layer bias vector.
wolffd@0 17 %
wolffd@0 18 % See also
wolffd@0 19 % MLP, MLPUNPAK, MLPFWD, MLPERR, MLPBKP, MLPGRAD
wolffd@0 20 %
wolffd@0 21
wolffd@0 22 % Copyright (c) Ian T Nabney (1996-2001)
wolffd@0 23
wolffd@0 24 % Check arguments for consistency
wolffd@0 25 errstring = consist(net, 'mlp');
wolffd@0 26 if ~isempty(errstring);
wolffd@0 27 error(errstring);
wolffd@0 28 end
wolffd@0 29
wolffd@0 30 w = [net.w1(:)', net.b1, net.w2(:)', net.b2];
wolffd@0 31