arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2601.03423cs.CLcs.AI
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无需训练适应新一代语言模型使用遗留临床模型

Training-Free Adaptation of New-Generation LLMs using Legacy Clinical Models

Stanford University(斯坦福大学);MemorialCare(纪念医疗中心)

Sasha Ronaghi, Chloe Stanwyck, Asad Aali, Amir Ronaghi, Miguel Fuentes, Tina Hernandez-Boussard, Emily Alsentzer

AI总结:

本文提出CAPT方法,通过模型融合实现无需训练的临床模型与通用领域模型适应,提升临床任务性能,适用于计算资源有限的医疗机构。

摘要:

通过持续预训练和指令微调将语言模型适应到临床领域需要为每个新模型生成进行昂贵的重新训练。我们提出跨架构代理调优(CAPT),一种模型融合方法,使现有临床模型能够无需训练地适应最先进的通用领域模型。CAPT支持词汇表不重叠的模型,利用对比解码选择性地注入临床相关信号,同时保持通用领域模型的推理和流畅性。在六个临床分类和文本生成任务中,CAPT结合新一代通用领域模型和旧一代临床模型,一致优于两者单独使用和最先进的融合方法(平均比UniTE高17.6%,比代理调优高41.4%)。通过令牌级分析和医生案例研究,我们证明CAPT增强了临床可操作语言,减少了上下文错误,增加了临床特异性。该技术尤其受益于计算资源受限的医疗机构,这些机构无法支持迭代临床训练,但希望采用新兴通用领域模型进展。

英文摘要:

Adapting language models to the clinical domain through continued pretraining and instruction tuning requires costly retraining for each new model generation. We propose Cross-Architecture Proxy Tuning (CAPT), a model-ensembling approach that enables training-free adaptation of state-of-the-art general-domain models using existing clinical models. CAPT supports models with disjoint vocabularies, leveraging contrastive decoding to selectively inject clinically relevant signals while preserving the general-domain model's reasoning and fluency. On six clinical classification and text-generation tasks, CAPT with a new-generation general-domain model and an older-generation clinical model consistently outperforms both models individually and state-of-the-art ensembling approaches (average +17.6\% over UniTE, +41.4\% over proxy tuning across tasks). Through token-level analysis and physician case studies, we demonstrate that CAPT amplifies clinically actionable language, reduces context errors, and increases clinical specificity. This technique especially benefits healthcare institutions with constrained computational capacity that cannot support iterative clinical training and want to adopt emerging general-domain model advances.

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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