www.gusucode.com > nnet 工具箱 matlab 源码程序 > nnet/nnweight/+normprod/dz_dw.m
function d = dz_dw(w,p,z,param) %NORMPROD.DZ_DW Derivative of weighted input with respect to weight % Copyright 2012-2015 The MathWorks, Inc. sump = sum(abs(p),1); dividep = 1 ./ sump; d = bsxfun(@times,p,dividep); d(~isfinite(d)) = 0; end