Article | Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013); May 22-24; 2013; Oslo University; Norway. NEALT Proceedings Series 16 | Using Constraint Grammar for Chunking Link�ping University Electronic Press Conference Proceedings
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Title:
Using Constraint Grammar for Chunking
Author:
Eckhard Bick: University of Southern Denmark, Odense, Denmark
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Full text (pdf)
Year:
2013
Conference:
Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013); May 22-24; 2013; Oslo University; Norway. NEALT Proceedings Series 16
Issue:
085
Article no.:
007
Pages:
13-26
No. of pages:
14
Publication type:
Abstract and Fulltext
Published:
2013-05-17
ISBN:
978-91-7519-589-6
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Series:
NEALT Proceedings Series
Publisher:
Linköping University Electronic Press; Linköpings universitet


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This paper presents and evaluates a novel and flexible chunking method using Constraint Grammar (CG) rules to introduce chunk edges in corpus annotation. Our method exploits preexisting (non-constituent) morphosyntactic annotation such as part-of-speech or function tags; but can also be made to work on raw text; integrated with other CG modules. The first version of the chunker was developed for German CG-annotated interview data; with a parallel English version derived from the German one; indicating a high degree of language-independence of the rules in the presence of generalized syntactic-functional tags (e.g. subject; object; modifier). Two different approaches are discussed; one for minimal; flat chunking; the other for deep; nested chunking. The system has a reasonable performance and robustness for both; achieving F-scores of 89.1 and 97.4 for nested and minimal chunking; respectively. Xml markup is supported; and with a full set of rules; the tool can be used to convert CG annotation into complete constituent trees in VISL or TIGER format.

Keywords: Chunking; Constraint Grammar; Syntactic Constituent Trees

Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013); May 22-24; 2013; Oslo University; Norway. NEALT Proceedings Series 16

Author:
Eckhard Bick
Title:
Using Constraint Grammar for Chunking
References:
No references available

Proceedings of the 19th Nordic Conference of Computational Linguistics (NODALIDA 2013); May 22-24; 2013; Oslo University; Norway. NEALT Proceedings Series 16

Author:
Eckhard Bick
Title:
Using Constraint Grammar for Chunking
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