A Transition-based System for Universal Dependency Parsing

Hao Wang, Hai Zhao, Zhisong Zhang


Abstract
This paper describes the system for our participation in the CoNLL 2017 Shared Task: Multilingual Parsing from Raw Text to Universal Dependencies. In this work, we design a system based on UDPipe1 for universal dependency parsing, where multilingual transition-based models are trained for different treebanks. Our system directly takes raw texts as input, performing several intermediate steps like tokenizing and tagging, and finally generates the corresponding dependency trees. For the special surprise languages for this task, we adopt a delexicalized strategy and predict basing on transfer learning from other related languages. In the final evaluation of the shared task, our system achieves a result of 66.53% in macro-averaged LAS F1-score.
Anthology ID:
K17-3020
Volume:
Proceedings of the CoNLL 2017 Shared Task: Multilingual Parsing from Raw Text to Universal Dependencies
Month:
August
Year:
2017
Address:
Vancouver, Canada
Editors:
Jan Hajič, Dan Zeman
Venue:
CoNLL
SIG:
SIGNLL
Publisher:
Association for Computational Linguistics
Note:
Pages:
191–197
Language:
URL:
https://aclanthology.org/K17-3020
DOI:
10.18653/v1/K17-3020
Bibkey:
Cite (ACL):
Hao Wang, Hai Zhao, and Zhisong Zhang. 2017. A Transition-based System for Universal Dependency Parsing. In Proceedings of the CoNLL 2017 Shared Task: Multilingual Parsing from Raw Text to Universal Dependencies, pages 191–197, Vancouver, Canada. Association for Computational Linguistics.
Cite (Informal):
A Transition-based System for Universal Dependency Parsing (Wang et al., CoNLL 2017)
Copy Citation:
PDF:
https://aclanthology.org/K17-3020.pdf
Data
Universal Dependencies