%0 Conference Proceedings %T Measuring Prerequisite Relations Among Concepts %A Liang, Chen %A Wu, Zhaohui %A Huang, Wenyi %A Giles, C. Lee %Y Màrquez, Lluís %Y Callison-Burch, Chris %Y Su, Jian %S Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing %D 2015 %8 September %I Association for Computational Linguistics %C Lisbon, Portugal %F liang-etal-2015-measuring %R 10.18653/v1/D15-1193 %U https://aclanthology.org/D15-1193 %U https://doi.org/10.18653/v1/D15-1193 %P 1668-1674