Comparing LLM-Based Translation Approaches for Extremely Low-Resource Languages
Jared Coleman, Ruben Rosales, Kira Toal, Diego Cuadros, Nicholas Leeds, Bhaskar Krishnamachari, Khalil Iskarous
Abstract
We present a comprehensive evaluation and extension of the LLM-Assisted Rule-Based Machine Translation (LLM-RBMT) paradigm, an approach that combines the strengths of rule-based methods and Large Language Models (LLMs) to support translation in no-resource settings. We present a robust new implementation (the Pipeline Translator) that generalizes the LLM-RBMT approach and enables flexible adaptation to novel constructions. We benchmark it against four alternatives (Builder, Instructions, RAG, and Fine-tuned translators) on a curated dataset of 150 English sentences, and compare them across translation quality and runtime. The Pipeline Translator consistently achieves the best overall performance. The LLM-RBMT methods (Pipeline and Builder) also offer an important advantage: they naturally align with evaluation strategies that prioritize grammaticality and semantic fidelity over surface-form overlap, which is critical for endangered languages where mistranslation carries high risk.- Anthology ID:
- 2026.loresmt-1.4
- Volume:
- Proceedings for the Ninth Workshop on Technologies for Machine Translation of Low Resource Languages (LoResMT 2026)
- Month:
- March
- Year:
- 2026
- Address:
- Rabat, Morocco
- Editors:
- Atul Kr. Ojha, Chao-hong Liu, Ekaterina Vylomova, Flammie Pirinen, Jonathan Washington, Nathaniel Oco, Xiaobing Zhao
- Venues:
- LoResMT | WS
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 49–68
- Language:
- URL:
- https://preview.aclanthology.org/manual-author-scripts/2026.loresmt-1.4/
- DOI:
- Cite (ACL):
- Jared Coleman, Ruben Rosales, Kira Toal, Diego Cuadros, Nicholas Leeds, Bhaskar Krishnamachari, and Khalil Iskarous. 2026. Comparing LLM-Based Translation Approaches for Extremely Low-Resource Languages. In Proceedings for the Ninth Workshop on Technologies for Machine Translation of Low Resource Languages (LoResMT 2026), pages 49–68, Rabat, Morocco. Association for Computational Linguistics.
- Cite (Informal):
- Comparing LLM-Based Translation Approaches for Extremely Low-Resource Languages (Coleman et al., LoResMT 2026)
- PDF:
- https://preview.aclanthology.org/manual-author-scripts/2026.loresmt-1.4.pdf