A Pairwise Event Coreference Model, Feature Impact and Evaluation for Event Coreference Resolution Zheng Chen author Heng Ji author Robert Haralick author 2009-09 text Proceedings of the Workshop on Events in Emerging Text Types Constantin Orasan editor Laura Hasler editor Corina Forăscu editor Association for Computational Linguistics Borovets, Bulgaria conference publication chen-etal-2009-pairwise https://aclanthology.org/W09-4303/ 2009-09 17 22