Prompting PaLM for Translation: Assessing Strategies and Performance

• URL: http://arxiv.org/abs/2211.09102v3
• Date: Sun, 25 Jun 2023 16:51:52 GMT
• Title: Prompting PaLM for Translation: Assessing Strategies and Performance
• Authors: David Vilar, Markus Freitag, Colin Cherry, Jiaming Luo, Viresh Ratnakar, George Foster
• Abstract summary: pathways language model (PaLM) has demonstrated the strongest machine translation (MT) performance among similarly-trained LLMs to date. We revisit previous assessments of PaLM's MT capabilities with more recent test sets, modern MT metrics, and human evaluation, and find that its performance, while impressive, still lags that of state-of-the-art supervised systems.
• Score: 16.73524055296411
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large language models (LLMs) that have been trained on multilingual but not parallel text exhibit a remarkable ability to translate between languages. We probe this ability in an in-depth study of the pathways language model (PaLM), which has demonstrated the strongest machine translation (MT) performance among similarly-trained LLMs to date. We investigate various strategies for choosing translation examples for few-shot prompting, concluding that example quality is the most important factor. Using optimized prompts, we revisit previous assessments of PaLM's MT capabilities with more recent test sets, modern MT metrics, and human evaluation, and find that its performance, while impressive, still lags that of state-of-the-art supervised systems. We conclude by providing an analysis of PaLM's MT output which reveals some interesting properties and prospects for future work.

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