Abstract
In this paper, we extend the arc-hybrid system for transition-based parsing with a swap transition that enables reordering of the words and construction of non-projective trees. Although this extension breaks the arc-decomposability of the transition system, we show how the existing dynamic oracle for this system can be modified and combined with a static oracle only for the swap transition. Experiments on 5 languages show that the new system gives competitive accuracy and is significantly better than a system trained with a purely static oracle.- Anthology ID:
- W17-6314
- Original:
- W17-6314v1
- Version 2:
- W17-6314v2
- Volume:
- Proceedings of the 15th International Conference on Parsing Technologies
- Month:
- September
- Year:
- 2017
- Address:
- Pisa, Italy
- Editors:
- Yusuke Miyao, Kenji Sagae
- Venue:
- IWPT
- SIG:
- SIGPARSE
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 99–104
- Language:
- URL:
- https://aclanthology.org/W17-6314
- DOI:
- Cite (ACL):
- Miryam de Lhoneux, Sara Stymne, and Joakim Nivre. 2017. Arc-Hybrid Non-Projective Dependency Parsing with a Static-Dynamic Oracle. In Proceedings of the 15th International Conference on Parsing Technologies, pages 99–104, Pisa, Italy. Association for Computational Linguistics.
- Cite (Informal):
- Arc-Hybrid Non-Projective Dependency Parsing with a Static-Dynamic Oracle (de Lhoneux et al., IWPT 2017)
- PDF:
- https://preview.aclanthology.org/nschneid-patch-2/W17-6314.pdf
- Code
- UppsalaNLP/uuparser