@article{spioptimizeranintegralseparatedpi,
  title = {SPI-Optimizer: an integral-Separated PI Controller for Stochastic Optimization},
  author = {Dan Wang and Mengqi Ji and Yong Wang and Haoqian Wang and Lu Fang},
  year = {2018},
  eprint = {1812.11305},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1812.11305v2},
}