Training the K-Sparse Autoencoder [1]: http://nbviewer.ipython.org/github/makhzani/convnet/blob/master/K-Sparse%20Autoencoder.ipynb Training the Winner-Take-All Autoencoder [2]: http://nbviewer.ipython.org/github/makhzani/convnet/blob/master/Winner-Take-All%20Autoencoder.ipynb [1] http://arxiv.org/abs/1312.5663 [2] http://arxiv.org/abs/1409.2752