Entity Annotation based on Inverse Index Operations Ganesh Ramakrishnan author Sreeram Balakrishnan author Sachindra Joshi author 2006-07 text Proceedings of the 2006 Conference on Empirical Methods in Natural Language Processing Dan Jurafsky editor Eric Gaussier editor Association for Computational Linguistics Sydney, Australia conference publication ramakrishnan-etal-2006-entity https://aclanthology.org/W06-1658/ 2006-07 492 500