TY  - INPR
A1  - Kübler, Sandra
A1  - Maier, Wolfgang
A1  - Rehbein, Ines
A1  - Versley, Yannick
A2  - Calzolari, Nicoletta
A2  - Choukri, Khalid
A2  - Maegaard, Bente
A2  - Mariani, Joseph
A2  - Odijk, Jan
A2  - Piperidis, Stelios
A2  - Tapias, Daniel
T1  - How to compare treebanks
N2  - Recent years have seen an increasing interest in developing standards for linguistic annotation, with a focus on the interoperability of the resources. This effort, however, requires a profound knowledge of the advantages and disadvantages of linguistic annotation schemes in order to avoid importing the flaws and weaknesses of existing encoding schemes into the new standards. This paper addresses the question how to compare syntactically annotated corpora and gain insights into the usefulness of specific design decisions. We present an exhaustive evaluation of two German treebanks with crucially different encoding schemes. We evaluate three different parsers trained on the two treebanks and compare results using EVALB, the Leaf-Ancestor metric, and a dependency-based evaluation. Furthermore, we present TePaCoC, a new testsuite for the evaluation of parsers on complex German grammatical constructions. The testsuite provides a well thought-out error classification, which enables us to compare parser output for parsers trained on treebanks with different encoding schemes and provides interesting insights into the impact of treebank annotation schemes on specific constructions like PP attachment or non-constituent coordination.
Y1  - 2008
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/9880
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30-1110595
UR  - http://cl.indiana.edu/~skuebler/papers/german_parsing.pdf
SN  - 2-9517408-4-0
N1  - Erschienen in: Nicoletta Calzolari ; Khalid Choukri ; Bente Maegaard ; Joseph Mariani ; Jan Odijk ; Stelios Piperidis ; Daniel Tapias (Hrsg.): Proceedings of the Sixth International Conference on Language Resources and Evaluation (LREC-2008), May, 28-30, 2008. Marrakech, Marocco, Paris : ELRA, 2008, S. 2322-2329, ISBN: 2-9517408-4-0
ER  -