Artificial Intelligence, Deep Learning: training an artificial neural network using backpropagation with gradient descent.
Last version is https://github.com/damien-mattei/AI_Deep_Learning/blob/main/exo_retropropagationNhidden_layers_matrix_v2.py
Computation and graphics generated by: https://github.com/damien-mattei/AI_Deep_Learning/blob/main/exo_retropropagationNhidden_layers_matrix_v2%2B.rkt