Aäron van den Oord Oriol Vinyals Koray Kavukcuoglu 6306-6315 2017 NIPS https://proceedings.neurips.cc/paper/2017/hash/7a98af17e63a0ac09ce2e96d03992fbc-Abstract.html http://papers.nips.cc/paper/7210-neural-discrete-representation-learning conf/nips/2017 db/conf/nips/nips2017.html#OordVK17