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Parsing German: How Much Morphology Do We Need?

  • We investigate how the granularity of POS tags influences POS tagging, and furthermore, how POS tagging performance relates to parsing results. For this, we use the standard “pipeline” approach, in which a parser builds its output on previously tagged input. The experiments are performed on two German treebanks, using three POS tagsets of different granularity, and six different POS taggers, together with the Berkeley parser. Our findings show that less granularity of the POS tagset leads to better tagging results. However, both too coarse-grained and too fine-grained distinctions on POS level decrease parsing performance.

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Metadaten
Author:Wolfgang Maier, Sandra Kübler, Daniel Dakota, Daniel Whyatt
URN:urn:nbn:de:bsz:mh39-61889
URL:http://www.spmrl.org/category/spmrl-sancl2014.html
Parent Title (English):First Joint Workshop on Statistical Parsing of Morphologically Rich Languages and Syntactic Analysis of Non-Canonical Language (SPMRL-SANCL 2014). August 2014. Dublin, Ireland
Document Type:Conference Proceeding
Language:English
Year of first Publication:2014
Date of Publication (online):2017/05/23
Publicationstate:Veröffentlichungsversion
Reviewstate:Peer-Review
Tag:German; morphology; part-of-speech (POS)
GND Keyword:Deutsch; Morphologie <Linguistik>; Syntaktische Analyse
First Page:1
Last Page:14
Dewey Decimal Classification:400 Sprache / 400 Sprache, Linguistik
BDSL-Classification:Grammatik
Linguistics-Classification:Korpuslinguistik
Linguistics-Classification:Morphologie
Open Access?:Ja
Licence (English):License LogoCreative Commons - Attribution 4.0 International