I had built a neural network in the weights update step the mean error square go directly to 0 for example
mean error square 1 = 1.2
mean error square 2 = 0
mean error square 3 = 0
mean error square 4 = 0
mean error square 5 = 0
mean error square 6 = 0 ....................
I don't know what is the problem the size of my neural network is: input = 324 * 540 target = 10 * 540
when I try with an other data with this size input = 81* 540 target = 10 * 540
it works
maybe the problem in the learning rate?