@inproceedings{EDM-2017-LiuL,
	author        = "Jingxuan Liu and Hongli Li",
	booktitle     = "{Proceedings of the 10th International Conference on Educational Data Mining}",
	ee            = "http://educationaldatamining.org/EDM2017/proc_files/papers/paper_163.pdf",
	publisher     = "{International Educational Data Mining Society}",
	title         = "{Exploring the Relationship Between Student Pre-knowledge and Engagement in MOOC Class Using Polytomous IRT}",
	year          = 2017,
}