@article{arsmaugmentreinforceswapmergeestimator,
  title = {ARSM: Augment-REINFORCE-Swap-Merge Estimator for Gradient Backpropagation Through Categorical Variables},
  author = {Mingzhang Yin and Yuguang Yue and Mingyuan Zhou},
  year = {2019},
  eprint = {1905.01413},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1905.01413v2},
}