@article{understandingandimprovingproximitygraph,
  title = {Understanding and Improving Proximity Graph based Maximum Inner Product Search},
  author = {Jie Liu and Xiao Yan and Xinyan Dai and Zhirong Li and James Cheng and Ming-Chang Yang},
  year = {2019},
  eprint = {1909.13459},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1909.13459v2},
}