@inproceedings{prerequisiterelationlearningforconcepts,
  title = {Prerequisite Relation Learning for Concepts in MOOCs},
  author = {Liangming Pan and Chengjiang Li and Juanzi Li and Jie Tang},
  year = {2017},
  booktitle = {ACL 2017 7},
  url = {https://aclanthology.org/P17-1133},
}