@inproceedings{heterogeneousgraphneuralnetworksfor2,
  title = {Heterogeneous Graph Neural Networks for Concept Prerequisite Relation Learning in Educational Data},
  author = {Chenghao Jia and Yongliang Shen and Yechun Tang and Lu Sun and Weiming Lu},
  year = {2021},
  booktitle = {NAACL 2021 4},
  url = {https://aclanthology.org/2021.naacl-main.164},
}