For the presentation "An Intuitive Introduction to Neural Networks" given at Bank of America.
IntroductionToNeuralNetworks.ipynb trains and visualises the weights of a neural network with one hidden layer trained on the MNIST dataset.
For reference, a logistic regression model trained on MNIST might have the following weights (source):
In contrast, the weights of the input layer to the hidden layer of a neural network trained on MNIST:
And, the weights of the hidden layer to the output units 0 and 1:
