Изменения

* [https://towardsdatascience.com/the-vanishing-exploding-gradient-problem-in-deep-neural-networks-191358470c11 towardsdatascience.com {{---}} The vanishing exploding gradient problem in deep neural networks];

* [https://machinelearningmastery.com/exploding-gradients-in-neural-networks/ machinelearningmastery.com {{---}} Exploding gradients in neural networks].