www.gusucode.com > nnet 工具箱 matlab 源码程序 > nnet/nnprocess/+removeconstantrows/backprop.m

    function dx = backprop(dy,x,y,settings)
%REMOVECONSTANTROWS..BACKPROP Backpropagate derivatives from outputs to inputs

% Copyright 2012-2015 The MathWorks, Inc.

  sizes = size(dy);
  sizes(1) = settings.xrows;
  dx = zeros(sizes,'like',dy);
  dx(settings.keep,:,:,:) = dy;
end