tracing: Modeling the acquisition of procedural knowledge, User Modeling and User-adapted Interaction, Vol. 4, No. 4, pp. 253–278 (1994). [2] Piech, C., Bassen, J., Huang, J., Ganguli, S., Sahami, M., Guibas, L. J. and Sohl- Dickstein, J.: Deep knowledge tracing, Advances in Neural Information Processing Systems, pp. 505–513 (2015). [3] Yeung, C.-K. and Yeung, D.-Y.: Addressing two problems in deep knowledge tracing via prediction-consistent regularization, arXiv preprint arXiv:1806.02180 (2018). 16