If the reader wants to know the details of AKT, please refer to the Appendix of the paper: Context-Aware Attentive Knowledge Tracing.
@inproceedings{ghosh2020context,
title={Context-Aware Attentive Knowledge Tracing},
author={Ghosh, Aritra and Heffernan, Neil and Lan, Andrew S},
booktitle={Proceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery \& Data Mining},
year={2020}
}