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Exact yet Efficient Graph Parsing, Bi-directional Locality and the Constructivist Hypothesis

Yajie Ye, Weiwei Sun


Abstract
A key problem in processing graph-based meaning representations is graph parsing, i.e. computing all possible derivations of a given graph according to a (competence) grammar. We demonstrate, for the first time, that exact graph parsing can be efficient for large graphs and with large Hyperedge Replacement Grammars (HRGs). The advance is achieved by exploiting locality as terminal edge-adjacency in HRG rules. In particular, we highlight the importance of 1) a terminal edge-first parsing strategy, 2) a categorization of a subclass of HRG, i.e. what we call Weakly Regular Graph Grammar, and 3) distributing argument-structures to both lexical and phrasal rules.
Anthology ID:
2020.acl-main.377
Volume:
Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics
Month:
July
Year:
2020
Address:
Online
Editors:
Dan Jurafsky, Joyce Chai, Natalie Schluter, Joel Tetreault
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4100–4110
Language:
URL:
https://aclanthology.org/2020.acl-main.377
DOI:
10.18653/v1/2020.acl-main.377
Bibkey:
Cite (ACL):
Yajie Ye and Weiwei Sun. 2020. Exact yet Efficient Graph Parsing, Bi-directional Locality and the Constructivist Hypothesis. In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, pages 4100–4110, Online. Association for Computational Linguistics.
Cite (Informal):
Exact yet Efficient Graph Parsing, Bi-directional Locality and the Constructivist Hypothesis (Ye & Sun, ACL 2020)
Copy Citation:
PDF:
https://aclanthology.org/2020.acl-main.377.pdf
Software:
 2020.acl-main.377.Software.zip
Video:
 http://slideslive.com/38929406