@article{deng2024food,
  title = {A proximal policy optimization approach for food delivery problem with reassignment due to order cancellation},
  author = {Yang Deng and Yimo Yan and Andy H.F. Chow and Zhili Zhou and Cheng-shuo Ying and Yong-Hong Kuo},
  journal = {Expert Systems with Applications},
  year = {2024},
  volume = {258},
  pages = {125045},
  doi = {10.1016/j.eswa.2024.125045},
  url = {https://doi.org/10.1016/j.eswa.2024.125045}
}