TY - GEN
T1 - Discovering narrative containers in clinical text
AU - Miller, Timothy A.
AU - Bethard, Steven
AU - Dligach, Dmitriy
AU - Pradhan, Sameer
AU - Lin, Chen
AU - Savova, Guergana K.
N1 - Funding Information:
The work described was supported by Temporal History of Your Medical Events (THYME) NLM R01LM010090 and Integrating Informatics and Biology to the Bedside (i2b2) NCBO U54LM008748. Thanks to the anonymous reviewers for thorough and insightful comments.
Publisher Copyright:
© 2013 Association for Computational Linguistics
PY - 2013
Y1 - 2013
N2 - The clinical narrative contains a great deal of valuable information that is only understandable in a temporal context. Events, time expressions, and temporal relations convey information about the time course of a patient's clinical record that must be understood for many applications of interest. In this paper, we focus on extracting information about how time expressions and events are related by narrative containers. We use support vector machines with composite kernels, which allows for integrating standard feature kernels with tree kernels for representing structured features such as constituency trees. Our experiments show that using tree kernels in addition to standard feature kernels improves F1 classification for this task.
AB - The clinical narrative contains a great deal of valuable information that is only understandable in a temporal context. Events, time expressions, and temporal relations convey information about the time course of a patient's clinical record that must be understood for many applications of interest. In this paper, we focus on extracting information about how time expressions and events are related by narrative containers. We use support vector machines with composite kernels, which allows for integrating standard feature kernels with tree kernels for representing structured features such as constituency trees. Our experiments show that using tree kernels in addition to standard feature kernels improves F1 classification for this task.
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M3 - Conference contribution
AN - SCOPUS:84992072305
T3 - Proceedings of the Annual Meeting of the Association for Computational Linguistics
SP - 18
EP - 26
BT - BioNLP 2013 - 2013 Workshop on Biomedical Natural Language Processing at the 51st Annual Meeting of the Association for Computational Linguistics, ACL 2013, Proceedings of the Workshop
A2 - Cohen, Kevin Bretonnel
A2 - Demner-Fushman, Dina
A2 - Ananiadou, Sophia
A2 - Pestian, John
A2 - Tsujii, Jun'ichi
PB - Association for Computational Linguistics (ACL)
T2 - 2013 Workshop on Biomedical Natural Language Processing, BioNLP 2013 at the 51st Annual Meeting of the Association for Computational Linguistics, ACL 2013
Y2 - 8 August 2013
ER -