@inproceedings{EDM-2015-JanningSS15a,
	author        = "Ruth Janning and Carlotta Schatten and Lars Schmidt-Thieme",
	booktitle     = "{Proceedings of the Eighth International Conference on Educational Data Mining}",
	ee            = "http://www.educationaldatamining.org/EDM2015/proceedings/poster566-567.pdf",
	isbn          = "978-8-4606-9425-0",
	pages         = "566--567",
	publisher     = "{International Educational Data Mining Society}",
	title         = "{How to Aggregate Multimodal Features for Perceived Task Difficulty Recognition in Intelligent Tutoring Systems}",
	year          = 2015,
}