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arXiv 2510.03528cs.CL

在含噪指令上微调:对泛化能力与性能的影响

Fine-Tuning on Noisy Instructions: Effects on Generalization and Performance

Department of Computer Science University of Sheffield, UK(计算机科学系 剑桥大学谢菲尔德分校)

Ahmed Alajrami, Xingwei Tan, Nikolaos Aletras

AI总结:

本文探究在指令微调数据中引入移除停用词、打乱词序等扰动对大型语言模型(LLMs)的影响,发现其在部分情况下能提升LLMs在MMLU等基准原始及扰动版本上的性能,为增强模型对含噪指令的韧性提供了思路。

摘要:

指令微调在增强大型语言模型(LLMs)的任务解决能力、提升其在各类任务中生成有用响应的可用性方面起着至关重要的作用。然而,先前的研究表明,LLMs对指令措辞的细微变化十分敏感。在本文中,我们探究在指令微调数据中引入扰动是否能增强LLMs对含噪指令的抵抗能力。我们聚焦于带有扰动(如移除停用词或打乱词序)的指令微调,如何影响LLMs在广泛使用的基准(MMLU、BBH、GSM8K)的原始版本和扰动版本上的性能。我们进一步评估了学习动态和模型行为的潜在变化。令人惊讶的是,我们的结果表明,在某些情况下,在扰动指令上进行微调能够提升下游任务性能。这些发现凸显了在指令微调中纳入扰动指令的重要性,这能使LLMs对含噪用户输入更具韧性。

英文摘要:

Instruction-tuning plays a vital role in enhancing the task-solving abilities of large language models (LLMs), improving their usability in generating helpful responses on various tasks. However, previous work has demonstrated that they are sensitive to minor variations in instruction phrasing. In this paper, we explore whether introducing perturbations in instruction-tuning data can enhance LLMs' resistance against noisy instructions. We focus on how instruction-tuning with perturbations, such as removing stop words or shuffling words, affects LLMs' performance on the original and perturbed versions of widely-used benchmarks (MMLU, BBH, GSM8K). We further assess learning dynamics and potential shifts in model behavior. Surprisingly, our results suggest that instruction-tuning on perturbed instructions can, in some cases, improve downstream performance. These findings highlight the importance of including perturbed instructions in instruction-tuning, which can make LLMs more resilient to noisy user inputs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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