LEDIR: An Unsupervised Algorithm for Learning Directionality of Inference Rules Rahul Bhagat author Patrick Pantel author Eduard Hovy author 2007-06 text Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL) Jason Eisner editor Association for Computational Linguistics Prague, Czech Republic conference publication bhagat-etal-2007-ledir https://aclanthology.org/D07-1017/ 2007-06 161 170