@article{optunaanextgenerationhyperparameter,
  title = {Optuna: A Next-generation Hyperparameter Optimization Framework},
  author = {Takuya Akiba and Shotaro Sano and Toshihiko Yanase and Takeru Ohta and Masanori Koyama},
  year = {2019},
  eprint = {1907.10902},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1907.10902v1},
}