@misc{li2023knowledge,
  title={Knowledge Graph Enhanced Intelligent Tutoring System Based on Exercise Representativeness and Informativeness},
  author={Linqing Li and Zhifeng Wang},
  year={2023},
  eprint={2307.15076},
  archivePrefix={arXiv},
  primaryClass={cs.CY},
  url={https://arxiv.org/abs/2307.15076}
}