function [h, dzdw] = LabelConflict_batch_backup(X, w, DzDy)

x=gather(X{1});

[m, n, k, batch] = size(X{1});

w = gather(w);

nClass = k;

if nargin == 2

h=zeros(m,n,k,batch,'single');

for i=1:nClass

h(:,:,i,:)=x(:,:,i,:);

for j=1:nClass

if i~=j

h(:,:,i,:)=h(:,:,i,:)+x(:,:,j,:)*w(i,j);

end

end

end

h = gpuArray(h);

if nargin > 2

dzdy=gather(DzDy);

dzdw=zeros(nClass,nClass,'single');

for i=1:nClass

h(:,:,i,:)=dzdy(:,:,i,:);

for j=1:nClass

if i~=j

h(:,:,i,:)=h(:,:,i,:)+dzdy(:,:,j,:)*w(i,j);

dzdw(i,j)=sum(mean(mean(bsxfun(@times,dzdy(:,:,i,:),x(:,:,j,:)),1),2));

end

end

end

h=gpuArray(h);

dzdw=gpuArray(dzdw);