odes' activation function:

<script src="https://gist.github.com/spolu/a83d8bff58ddcd4045fa.js"></script>

Now that we have the proper data structure to represent our neural network, we need to be able to train it. The network we described is a feed-forward network: values are propagated from the input vector layer to the output layer, along the weights, using at each node its activation function to feed the next layer. Training of such networks relies on backpropagation[6].

Backpropagation alone deserves 