TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Rehbein, Ines
A1  - van Genabith, Josef
ED  - De Smedt, Koenraad
ED  - Hajič, Jan
ED  - Kübler, Sandra
T1  - Why is it so difficult to compare treebanks? TIGER and TüBa-D/Z revisited
T2  - The Sixth International Workshop on Treebanks and Linguistic Theories (TLT ‘07). Bergen, Norway. December 7–8, 2007
N2  - This paper is a contribution to the ongoing discussion on treebank annotation schemes and their impact on PCFG parsing results.  We provide a thorough comparison of two German treebanks: the TIGER treebank and the TüBa-D/Z. We use simple statistics on sentence length and vocabulary size, and more refined methods such as perplexity and its correlation with PCFG parsing results, as well as a Principal Components Analysis. Finally we present a qualitative evaluation of a set of 100 sentences from the TüBa- D/Z, manually annotated in the TIGER as well as in the TüBa-D/Z annotation scheme, and show that even the existence of a parallel subcorpus does not support a straightforward and easy comparison of both annotation schemes.
T3  - NEALT Proceedings Series - 1 
KW  - Korpus <Linguistik>
KW  - Syntaktische Analyse
KW  - Annotation
KW  - treebanks
Y1  - 2007
U6  - https://nbn-resolving.org/urn:nbn:de:bsz:mh39-57822
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:mh39-57822
UR  - http://doras.dcu.ie/15264/
SN  - 1736-6305
SS  - 1736-6305
SP  - 115
EP  - 126
PB  - Northern European Association for Language Technology
CY  - Tartu
ER  -