If the reader wants to know the details of EKPT, please refer to the Chapter 5 of the paper: Learning or Forgetting? A Dynamic Approach for Tracking the Knowledge Proficiency of Students.
@article{huang2020learning,
title={Learning or forgetting? A dynamic approach for tracking the knowledge proficiency of students},
author={Huang, Zhenya and Liu, Qi and Chen, Yuying and Wu, Le and Xiao, Keli and Chen, Enhong and Ma, Haiping and Hu, Guoping},
journal={ACM Transactions on Information Systems (TOIS)},
volume={38},
number={2},
pages={1--33},
year={2020},
publisher={ACM New York, NY, USA}
}