@inproceedings{Liu2018d, author = "Z. Liu and T. Wang and N. Pinkwart and S. Liu and L. Kang", title = "An Emotion Oriented Topic Modeling Approach to Discover What Students are Concerned about in Course Forums", year = 2018, booktitle = "Proceedings of the 2018 IEEE 18th International Conference on Advanced Learning Technologies (ICALT)", pages = "170-172", doi = "10.1109/ICALT.2018.00047" }