Abstract
“Episodic Logic: Unscoped Logical Form” (EL-ULF) is a semantic representation capturing predicate-argument structure as well as more challenging aspects of language within the Episodic Logic formalism. We present the first learned approach for parsing sentences into ULFs, using a growing set of annotated examples. The results provide a strong baseline for future improvement. Our method learns a sequence-to-sequence model for predicting the transition action sequence within a modified cache transition system. We evaluate the efficacy of type grammar-based constraints, a word-to-symbol lexicon, and transition system state features in this task. Our system is available at https://github.com/genelkim/ulf-transition-parser. We also present the first official annotated ULF dataset at https://www.cs.rochester.edu/u/gkim21/ulf/resources/.- Anthology ID:
- 2021.iwcs-1.18
- Volume:
- Proceedings of the 14th International Conference on Computational Semantics (IWCS)
- Month:
- June
- Year:
- 2021
- Address:
- Groningen, The Netherlands (online)
- Editors:
- Sina Zarrieß, Johan Bos, Rik van Noord, Lasha Abzianidze
- Venue:
- IWCS
- SIG:
- SIGSEM
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 184–201
- Language:
- URL:
- https://aclanthology.org/2021.iwcs-1.18
- DOI:
- Cite (ACL):
- Gene Kim, Viet Duong, Xin Lu, and Lenhart Schubert. 2021. A Transition-based Parser for Unscoped Episodic Logical Forms. In Proceedings of the 14th International Conference on Computational Semantics (IWCS), pages 184–201, Groningen, The Netherlands (online). Association for Computational Linguistics.
- Cite (Informal):
- A Transition-based Parser for Unscoped Episodic Logical Forms (Kim et al., IWCS 2021)
- PDF:
- https://preview.aclanthology.org/nschneid-patch-3/2021.iwcs-1.18.pdf
- Code
- genelkim/ulf-transition-parser