wolffd@0: function r = regularizeKernel(W, X, gradient)
wolffd@0: %
wolffd@0: % r = regularizeKernel(W, X, gradient)
wolffd@0: %
wolffd@0: %
wolffd@0:     if gradient
wolffd@0:         r = X;
wolffd@0:     else
wolffd@0:         r = sum(sum(W .* X));
wolffd@0:     end
wolffd@0: end