Efficient Stacked Dependency Parsing by Forest Reranking

Katsuhiko Hayashi, Shuhei Kondo, Yuji Matsumoto


Abstract
This paper proposes a discriminative forest reranking algorithm for dependency parsing that can be seen as a form of efficient stacked parsing. A dynamic programming shift-reduce parser produces a packed derivation forest which is then scored by a discriminative reranker, using the 1-best tree output by the shift-reduce parser as guide features in addition to third-order graph-based features. To improve efficiency and accuracy, this paper also proposes a novel shift-reduce parser that eliminates the spurious ambiguity of arc-standard transition systems. Testing on the English Penn Treebank data, forest reranking gave a state-of-the-art unlabeled dependency accuracy of 93.12.
Anthology ID:
Q13-1012
Volume:
Transactions of the Association for Computational Linguistics, Volume 1
Month:
Year:
2013
Address:
Cambridge, MA
Editors:
Dekang Lin, Michael Collins
Venue:
TACL
SIG:
Publisher:
MIT Press
Note:
Pages:
139–150
Language:
URL:
https://aclanthology.org/Q13-1012
DOI:
10.1162/tacl_a_00216
Bibkey:
Cite (ACL):
Katsuhiko Hayashi, Shuhei Kondo, and Yuji Matsumoto. 2013. Efficient Stacked Dependency Parsing by Forest Reranking. Transactions of the Association for Computational Linguistics, 1:139–150.
Cite (Informal):
Efficient Stacked Dependency Parsing by Forest Reranking (Hayashi et al., TACL 2013)
Copy Citation:
PDF:
https://aclanthology.org/Q13-1012.pdf