Optimizations are always great :-) This sounds similar to Maciej Kula's experiments in "Binary Latent Representations for Efficient Ranking: Empirical Assessme

Optimizations are always great :-) This sounds similar to Maciej Kula's experiments in "Binary Latent Representations for Efficient Ranking: Empirical Assessment", https://arxiv.org/abs/1706.07479 https://arxiv.org/abs/1706.07479. Maciej shared this [1]: "FWIW I ran similar experiments on recommendation tasks. My initial results were very encouraging (and similar to those reported here), but the effect disappeared entirely after adding regularization to the baseline. I would have more confidence in the results reported here if the authors ran a more principled hyperparameter search, and added regularization to their baseline." [1] https://twitter.com/Maciej_Kula/status/976028573487239168 https://twitter.com/Maciej_Kula/status/976028573487239168