@article{combinatorialoptimizationbygraphpointer,
  title = {Combinatorial Optimization by Graph Pointer Networks and Hierarchical Reinforcement Learning},
  author = {Qiang Ma and Suwen Ge and Danyang He and Darshan Thaker and Iddo Drori},
  year = {2019},
  eprint = {1911.04936},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1911.04936v1},
}