Effective Information Extraction with Semantic Affinity Patterns and Relevant Regions Siddharth Patwardhan author Ellen Riloff 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 patwardhan-riloff-2007-effective https://aclanthology.org/D07-1075/ 2007-06 717 727