@InProceedings{sha-EtAl:2016:P16-1,
  author    = {Sha, Lei  and  Liu, Jing  and  Lin, Chin-Yew  and  Li, Sujian  and  Chang, Baobao  and  Sui, Zhifang},
  title     = {RBPB: Regularization-Based Pattern Balancing Method for Event Extraction},
  booktitle = {Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {August},
  year      = {2016},
  address   = {Berlin, Germany},
  publisher = {Association for Computational Linguistics},
  pages     = {1224--1234},
  url       = {http://www.aclweb.org/anthology/P16-1116}
}