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arXiv 2401.17072cs.CL

SemScore:基于语义文本相似性的指令微调大语言模型自动化评估

SemScore: Automated Evaluation of Instruction-Tuned LLMs based on Semantic Textual Similarity

Humboldt-Universität zu Berlin(柏林洪堡大学)

Ansar Aynetdinov, Alan Akbik

AI总结:

提出SemScore指标,利用语义文本相似性直接比较模型输出与目标响应,在12个指令微调LLMs上优于8种现有评估指标,与人工评估相关性最高。

摘要:

指令微调的大语言模型(LLMs)近期在生成符合自然语言指令的恰当响应方面展现出显著进步。然而,许多现有工作依赖人工评估来判断生成响应的质量。由于这种人工评估耗时,难以扩展到对多个模型及模型变体的评估。在这篇短论文中,我们提出了一种简单但极为有效的评估指标,称为SemScore,该指标直接利用语义文本相似性(STS)将模型输出与黄金目标响应进行比较。我们使用8种广泛使用的文本生成评估指标,对12个著名的指令微调LLMs的模型输出进行了比较评估。我们发现,在与人工评估的相关性方面,我们提出的SemScore指标优于所有其他(在许多情况下更为复杂的)评估指标。这些发现表明了我们提出的指标在评估指令微调LLMs方面的实用性。

英文摘要:

Instruction-tuned Large Language Models (LLMs) have recently showcased remarkable advancements in their ability to generate fitting responses to natural language instructions. However, many current works rely on manual evaluation to judge the quality of generated responses. Since such manual evaluation is time-consuming, it does not easily scale to the evaluation of multiple models and model variants. In this short paper, we propose a straightforward but remarkably effective evaluation metric called SemScore, in which we directly compare model outputs to gold target responses using semantic textual similarity (STS). We conduct a comparative evaluation of the model outputs of 12 prominent instruction-tuned LLMs using 8 widely-used evaluation metrics for text generation. We find that our proposed SemScore metric outperforms all other, in many cases more complex, evaluation metrics in terms of correlation to human evaluation. These findings indicate the utility of our proposed metric for the evaluation of instruction-tuned LLMs.

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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