?? learnbpm.m
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function [dw,db] = learnbpm(p,d,lr,mc,dw,db)%LEARNBPM Backpropagation learning rule with momentum.% % [dW,dB] = LEARNBPM(P,D,LR,MC,dW,dB)% P - RxQ matrix of input vectors.% D - SxQ matrix of error vectors.% lr - the learning rate.% mc - momentum constant.% dW - SxR weight change matrix.% dB - Sx1 bias change vector (optional).% Returns:% dW - a new weight change matrix.% dB - a new bias change vector (optional).% % See also NNLEARN, BACKPROP, SIMFF, INITFF, TRAINBPX.% Mark Beale, 1-31-92% Revised 12-15-93, MB% Copyright (c) 1992-93 by the MathWorks, Inc.% $Revision: 1.1 $ $Date: 1994/01/11 16:25:05 $if nargin < 5,error('Not enough input arguments'),endx = (1-mc)*lr*d;dw = mc*dw + x*p';if nargout == 2 [R,Q] = size(p); db = mc*db + x*ones(Q,1);end
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