@article{parameterlessstochasticnaturalgradient,
  title = {Parameterless Stochastic Natural Gradient Method for Discrete Optimization and its Application to Hyper-Parameter Optimization for Neural Network},
  author = {Kouhei Nishida and Hernan Aguirre and Shota Saito and Shinichi Shirakawa and Youhei Akimoto},
  year = {2018},
  eprint = {1809.06517},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1809.06517v1},
}