Code for genereting data, training and testing. There are two tasks: ordering single numbers, or sums or numbers (the _sums suffix).
The training scripts save model weights each epoch. When started, they attempt to load appropriate weights - corresponding to the hidden size and the chosen number of steps in a sequence.
This software builts upon https://github.com/keon/pointer-networks.
Using Keras 2? Try the keras-2.0 branch.