John C. Stamper, Tiffany Barnes. An unsupervised, frequency-based metric for selecting hints in an MDP-based tutor. In Tiffany Barnes, Michel C. Desmarais, Cristóbal Romero, Sebastián Ventura, editors, Educational Data Mining - EDM 2009, Cordoba, Spain, July 1-3, 2009. Proceedings of the 2nd International Conference on Educational Data Mining. pages 181-190, www.educationaldatamining.org, 2009. [doi]
Abstract is missing.