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Author
R. Reinanda
M. de Rijke
Year
2014
Title
Prior-informed distant supervision for temporal evidence classification
Event
COLING 2014
Book/source title
Proceedings of COLING 2014: the 25th International Conference on Computational Linguistics: technical papers: August 23-29, 2014, Dublin, Ireland
Pages (from-to)
996-1006
Publisher
Association for Computational Linguistics
ISBN
9781941643266
Document type
Conference contribution
Faculty
Faculty of Science (FNWI)
Institute
Informatics Institute (IVI)
Abstract
Temporal evidence classification, i.e., finding associations between temporal expressions and relations expressed in text, is an important part of temporal relation extraction. To capture the variations found in this setting, we employ a distant supervision approach, modeling the task as multi-class text classification. There are two main challenges with distant supervision: (1) noise generated by incorrect heuristic labeling, and (2) distribution mismatch between the target and distant supervision examples. We are particularly interested in addressing the second problem and propose a sampling approach to handle the distribution mismatch. Our prior-informed distant supervision approach improves over basic distant supervision and outperforms a purely supervised approach when evaluated on TAC-KBP data, both on classification and end-to-end metrics.
Link
Link
Language
English
Permalink
http://hdl.handle.net/11245/1.439260
Downloads
  • C14-1094

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