This code is mostly from : https://www.pyimagesearch.com/2016/10/17/stochastic-gradient-descent-sgd-with-python/
uchida-takumi/exercize_StochasticGradientDescent
This code is mostly from : https://www.pyimagesearch.com/2016/10/17/stochastic-gradient-descent-sgd-with-python/
PythonMIT