TY - CHAP T1 - Considering Ill-Definedness Of Problem Tasks Under The Aspect Of Solution Space AU - Le, N. T. AU - Menzel, W. AU - Pinkwart, N. TI - Proceedings of the 23st International Conference of the Florida Artificial Intelligence Research Society (FLAIRS) PY - 2010 PB - AAAI ER - TY - CHAP T1 - Evaluation of a Constraint-Based Homework Assistance System for Logic Programming AU - Le, N. T. AU - Menzel, W. AU - Pinkwart, N. TI - Proceedings of the 17th International Conference on Computers in Education (ICCE) PY - 2009 PB - Asia-Pacific Society for Computers in Education ER -