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ACL
2012

Discriminative Strategies to Integrate Multiword Expression Recognition and Parsing

6 years 11 months ago
Discriminative Strategies to Integrate Multiword Expression Recognition and Parsing
The integration of multiword expressions in a parsing procedure has been shown to improve accuracy in an artificial context where such expressions have been perfectly pre-identified. This paper evaluates two empirical strategies to integrate multiword units in a real constituency parsing context and shows that the results are not as promising as has sometimes been suggested. Firstly, we show that pregrouping multiword expressions before parsing with a state-of-the-art recognizer improves multiword recognition accuracy and unlabeled attachment score. However, it has no statistically significant impact in terms of F-score as incorrect multiword expression recognition has important side effects on parsing. Secondly, integrating multiword expressions in the parser grammar followed by a reranker specific to such expressions slightly improves all evaluation metrics.
Matthieu Constant, Anthony Sigogne, Patrick Watrin
Added 29 Sep 2012
Updated 29 Sep 2012
Type Journal
Year 2012
Where ACL
Authors Matthieu Constant, Anthony Sigogne, Patrick Watrin
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