@inproceedings{TUC-HCIS/LP11b,
author = "N. T. Le and N. Pinkwart",
title = "Adding Weights to Constraints in Intelligent Tutoring Systems: Does it Improve the Error Diagnosis?",
year = 2011,
booktitle = "Proceedings of the 6th European Conference On Technology Enhanced Learning (ECTEL)",
publisher = "Springer Verlag",
number = 6964,
keywords = "incom"
}