Beyond English: The Impact of Prompt Translation Strategies across Languages and Tasks in Multilingual LLMs

Fuente: arXiv
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Hauptverfasser: Mondshine, Itai, Paz-Argaman, Tzuf, Tsarfaty, Reut
Format: Preprint
Veröffentlicht: 2025
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author Mondshine, Itai
Paz-Argaman, Tzuf
Tsarfaty, Reut
author_facet Mondshine, Itai
Paz-Argaman, Tzuf
Tsarfaty, Reut
contents Despite advances in the multilingual capabilities of Large Language Models (LLMs) across diverse tasks, English remains the dominant language for LLM research and development. So, when working with a different language, this has led to the widespread practice of pre-translation, i.e., translating the task prompt into English before inference. Selective pre-translation, a more surgical approach, focuses on translating specific prompt components. However, its current use is sporagic and lacks a systematic research foundation. Consequently, the optimal pre-translation strategy for various multilingual settings and tasks remains unclear. In this work, we aim to uncover the optimal setup for pre-translation by systematically assessing its use. Specifically, we view the prompt as a modular entity, composed of four functional parts: instruction, context, examples, and output, either of which could be translated or not. We evaluate pre-translation strategies across 35 languages covering both low and high-resource languages, on various tasks including Question Answering (QA), Natural Language Inference (NLI), Named Entity Recognition (NER), and Abstractive Summarization. Our experiments show the impact of factors as similarity to English, translation quality and the size of pre-trained data, on the model performance with pre-translation. We suggest practical guidelines for choosing optimal strategies in various multilingual settings.
format Preprint
id arxiv_https___arxiv_org_abs_2502_09331
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Beyond English: The Impact of Prompt Translation Strategies across Languages and Tasks in Multilingual LLMs
Mondshine, Itai
Paz-Argaman, Tzuf
Tsarfaty, Reut
Computation and Language
Despite advances in the multilingual capabilities of Large Language Models (LLMs) across diverse tasks, English remains the dominant language for LLM research and development. So, when working with a different language, this has led to the widespread practice of pre-translation, i.e., translating the task prompt into English before inference. Selective pre-translation, a more surgical approach, focuses on translating specific prompt components. However, its current use is sporagic and lacks a systematic research foundation. Consequently, the optimal pre-translation strategy for various multilingual settings and tasks remains unclear. In this work, we aim to uncover the optimal setup for pre-translation by systematically assessing its use. Specifically, we view the prompt as a modular entity, composed of four functional parts: instruction, context, examples, and output, either of which could be translated or not. We evaluate pre-translation strategies across 35 languages covering both low and high-resource languages, on various tasks including Question Answering (QA), Natural Language Inference (NLI), Named Entity Recognition (NER), and Abstractive Summarization. Our experiments show the impact of factors as similarity to English, translation quality and the size of pre-trained data, on the model performance with pre-translation. We suggest practical guidelines for choosing optimal strategies in various multilingual settings.
title Beyond English: The Impact of Prompt Translation Strategies across Languages and Tasks in Multilingual LLMs
topic Computation and Language
url https://arxiv.org/abs/2502.09331