Structured Event Retrieval over Microblog Archives Donald Metzler author Congxing Cai author Eduard Hovy author 2012-06 text Proceedings of the 2012 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Eric Fosler-Lussier editor Ellen Riloff editor Srinivas Bangalore editor Association for Computational Linguistics Montréal, Canada conference publication metzler-etal-2012-structured https://aclanthology.org/N12-1083/ 2012-06 646 655