Constraint-Driven Rank-Based Learning for Information Extraction, Sameer Singh, Limin Yao, Sebastian Riedel and Andrew McCallum, Joint Human Language Technology Conference/Annual Meeting of the North American Chapter of the Association for Computational Linguistics (HLT-NAACL '10) 2010 [pdf]
@inproceedings{singh10constraint,
    address={Los Angeles, California}, 
    year={2010}, 
    author={Sameer Singh and Limin Yao and Sebastian Riedel and Andrew McCallum}, 
    bdsk-url-1={http://www.cs.umass.edu/~lmyao/papers/semi-ie-naacl10.pdf}, 
    title={Constraint-Driven Rank-Based Learning for Information Extraction}, 
    pages={729--732}, 
    month={June}, 
    publisher={Association for Computational Linguistics}, 
    booktitle={Joint Human Language Technology Conference/Annual Meeting of the North American Chapter of the Association for Computational Linguistics (HLT-NAACL '10)}, 
}