Intelligent Tutoring Systems 14th International Conference, ITS 2018, Montreal, QC, Canada, June 11-15, 2018, Proceedings - Nkambou, Roger; Nkambou, Roger; Azevedo, Roger; Azevedo, Roger; Vassileva, Julita; Vassileva, Julita (Springer International Publishing : Imprint: Springer, 2018)