Impact of Sequence Length and Copying on Clause-Level Inflection
Badr Jaidi, Utkarsh Saboo, Xihan Wu, Garrett Nicolai, Miikka Silfverberg
Abstract
We present the University of British Columbia’s submission to the MRL shared task on multilingual clause-level morphology. Our submission extends word-level inflectional models to the clause-level in two ways: first, by evaluating the role that BPE has on the learning of inflectional morphology, and second, by evaluating the importance of a copy bias obtained through data hallucination. Experiments demonstrate a strong preference for language-tuned BPE and a copy bias over a vanilla transformer. The methods are complementary for inflection and analysis tasks – combined models see error reductions of 38% for inflection and 15.6% for analysis; However, this synergy does not hold for reinflection, which performs best under a BPE-only setting. A deeper analysis of the errors generated by our models illustrates that the copy bias may be too strong - the combined model produces predictions more similar to the copy-influenced system, despite the success of the BPE-model.- Anthology ID:
- 2022.mrl-1.11
- Volume:
- Proceedings of the The 2nd Workshop on Multi-lingual Representation Learning (MRL)
- Month:
- December
- Year:
- 2022
- Address:
- Abu Dhabi, United Arab Emirates (Hybrid)
- Venue:
- MRL
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 106–114
- Language:
- URL:
- https://aclanthology.org/2022.mrl-1.11
- DOI:
- Cite (ACL):
- Badr Jaidi, Utkarsh Saboo, Xihan Wu, Garrett Nicolai, and Miikka Silfverberg. 2022. Impact of Sequence Length and Copying on Clause-Level Inflection. In Proceedings of the The 2nd Workshop on Multi-lingual Representation Learning (MRL), pages 106–114, Abu Dhabi, United Arab Emirates (Hybrid). Association for Computational Linguistics.
- Cite (Informal):
- Impact of Sequence Length and Copying on Clause-Level Inflection (Jaidi et al., MRL 2022)
- PDF:
- https://preview.aclanthology.org/paclic-22-ingestion/2022.mrl-1.11.pdf