A Bootstrapping Method for Learning Semantic Lexicons using Extraction Pattern Contexts Michael Thelen author Ellen Riloff author 2002-07 text Proceedings of the 2002 Conference on Empirical Methods in Natural Language Processing (EMNLP 2002) Association for Computational Linguistics conference publication thelen-riloff-2002-bootstrapping 10.3115/1118693.1118721 https://aclanthology.org/W02-1028/ 2002-07 214 221