NLIP reading group: Fast and Robust Joint Models for Biomedical Event Extraction

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• Andreas Vlachos (University of Cambridge)
• Thursday 20 October 2011, 12:00-13:00
• GS15, Computer Laboratory.

If you have a question about this talk, please contact Jimme Jardine.

Andreas will be taking us through the following: http://www.aclweb.org/anthology/D/D11/D11-1001.pdf

Extracting biomedical events from literature has attracted much recent attention. The bestperforming systems so far have been pipelines of simple subtask-specific local classifiers. A natural drawback of such approaches are cascading errors introduced in early stages of the pipeline. We present three joint models of increasing complexity designed to overcome this problem. The first model performs joint trigger and argument extraction, and lends itself to a simple, efficient and exact inference algorithm. The second model captures correlations between events, while the third model ensures consistency between arguments of the same event. Inference in these models is kept tractable through dual decomposition. The first two models outperform the previous best joint approaches and are very competitive with respect to the current state-of-theart. The third model yields the best results reported so far on the BioNLP 2009 shared task, the BioNLP 2011 Genia task and the BioNLP 2011 Infectious Diseases task.

@inproceedings{riedel2011fast, title={Fast and Robust Joint Models for Biomedical Event Extraction}, author={Riedel, S. and McCallum, A.}, booktitle={Proceedings of the Conference on Empirical methods in natural language processing (EMNLP’11)}, year={2011} }

This talk is part of the Natural Language Processing Reading Group series.

This talk is included in these lists:

• Cambridge Forum of Science and Humanities
• Cambridge Language Sciences
• Cambridge talks
• Chris Davis' list
• GS15, Computer Laboratory
• Guy Emerson's list
• Natural Language Processing Reading Group

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