Show HN: Hyperbolic N-Space Embeddings for TensorFlow

I still think hyperbolic geometry hasn't been appreciated enough in the ML world, following some related papers by facebook research over the last year (importantly this one: https://papers.nips.cc/paper/7213-poincare-embeddings-for-le...).

Here's an implementation of some basic functions to support the Poincare model for word embeddings in TF. Lorentz model coming eventually...