Rita Kuo, Wei-Peng Lien, Maiga Chang, Jia-Sheng Heh. Difficulty Analysis for Learners in Problem Solving Process Based on the Knowledge Map. In 2003 IEEE International Conference on Advanced Learning Technologies (ICALT 2003), 9-11 July 2003, Athens, Greece. pages 386-387, IEEE Computer Society, 2003. [doi]
Abstract is missing.