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arXiv 2601.09367cs.CL
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大型语言模型在临床文本中关系抽取能力的评估:英语和土耳其语的双语评估

Relation Extraction Capabilities of LLMs on Clinical Text: A Bilingual Evaluation for English and Turkish

Department of Computer Engineering, Astana IT University(阿斯塔纳IT大学计算机工程系);Department of Computer Engineering, Ege University(埃兹尔大学计算机工程系)

Aidana Aidynkyzy, Oğuz Dikenelli, Oylum Alatlı, Şebnem Bora

AI总结:

本研究通过双语评估揭示了LLM在临床文本关系抽取中的能力,提出Relation-Aware Retrieval方法,展示其在英语和土耳其语中的高性能表现。

摘要:

非英语语言中用于临床信息抽取的标注数据稀缺,阻碍了以大型语言模型(LLM)为基础的方法的评估。在本研究中,我们提出了首个针对英语和土耳其语的全面双语评估,用于临床关系抽取(RE)任务。为了促进这一评估,我们引入了首个英语-土耳其语平行临床RE数据集,该数据集是从2010年i2b2/VA关系分类语料库中衍生并精心编纂的。我们系统地评估了多种提示策略,包括多上下文学习(ICL)和推理链(CoT)方法,并将这些方法的性能与微调基线模型如PURE进行比较。此外,我们提出了一种基于对比学习的Relation-Aware Retrieval(RAR),这是一种专门设计以捕捉句子级和关系级语义的上下文示例选择方法。我们的结果表明,基于提示的LLM方法在传统微调模型上表现更优。此外,所有评估的LLM和提示技术中,英语的评估表现优于其土耳其语 counterparts。在ICL方法中,RAR取得了最高性能,Gemini 1.5 Flash在英语中的微F1得分为0.906,在土耳其语中为0.888。当RAR与使用DeepSeek-V3模型的结构化推理提示结合时,性能进一步提升到英语中的0.918 F1。这些发现突显了高质量演示检索的重要性,并强调了高级检索和提示技术在临床自然语言处理中弥补资源差距的潜力。

英文摘要:

The scarcity of annotated datasets for clinical information extraction in non-English languages hinders the evaluation of large language model (LLM)-based methods developed primarily in English. In this study, we present the first comprehensive bilingual evaluation of LLMs for the clinical Relation Extraction (RE) task in both English and Turkish. To facilitate this evaluation, we introduce the first English-Turkish parallel clinical RE dataset, derived and carefully curated from the 2010 i2b2/VA relation classification corpus. We systematically assess a diverse set of prompting strategies, including multiple in-context learning (ICL) and Chain-of-Thought (CoT) approaches, and compare their performance to fine-tuned baselines such as PURE. Furthermore, we propose Relation-Aware Retrieval (RAR), a novel in-context example selection method based on contrastive learning, that is specifically designed to capture both sentence-level and relation-level semantics. Our results show that prompting-based LLM approaches consistently outperform traditional fine-tuned models. Moreover, evaluations for English performed better than their Turkish counterparts across all evaluated LLMs and prompting techniques. Among ICL methods, RAR achieves the highest performance, with Gemini 1.5 Flash reaching a micro-F1 score of 0.906 in English and 0.888 in Turkish. Performance further improves to 0.918 F1 in English when RAR is combined with a structured reasoning prompt using the DeepSeek-V3 model. These findings highlight the importance of high-quality demonstration retrieval and underscore the potential of advanced retrieval and prompting techniques to bridge resource gaps in clinical natural language processing.

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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