arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.02558cs.CLcs.LG
收藏

增强生物医学NLI模型的鲁棒性:一种针对临床试验的探针方法

Enhancing Robustness in Biomedical NLI Models: A Probing Approach for Clinical Trials

National University of Computer & Emerging Sciences(国家计算机与新兴科学大学)

Ata Mustafa

AI总结:

本研究通过记忆探针分析Sci-five模型在临床试验蕴含任务中的特征学习,并利用迭代零空间投影微调,提升了模型鲁棒性和准确性。

摘要:

大型语言模型已经彻底改变了各个领域和行业,例如对话式人工智能、内容生成、信息检索、商业智能以及医疗等,仅举几例。在医疗领域的一个主要应用是分析和研究临床试验的蕴含任务。然而,已经观察到大型语言模型容易受到捷径学习、事实不一致以及上下文微小变化时性能下降的影响。为了确保模型输出的完整性,进行了对抗性和鲁棒性测试。但是,模糊性仍然存在。为了确保推理的完整性并调查模型是否具有正确的句法和语义理解,使用了探针方法。在这里,我使用了记忆探针来研究在临床试验上训练的Sci-five模型。我调查了模型相对于自然逻辑学习的特征。为了实现目标,我训练了任务特定的探针。使用这些探针来调查训练模型的最终层。然后,使用迭代零空间投影对训练模型进行微调。结果表明模型准确性提高了。在实验过程中,我观察到探针的大小对微调过程有影响。

英文摘要:

Large Language Models have revolutionized various fields and industries, such as Conversational AI, Content Generation, Information Retrieval, Business Intelligence, and Medical, to name a few. One major application in the field of medical is to analyze and investigate clinical trials for entailment tasks.However, It has been observed that Large Language Models are susceptible to shortcut learning, factual inconsistency, and performance degradation with little variation in context. Adversarial and robust testing is performed to ensure the integrity of models output. But, ambiguity still persists. In order to ensure the integrity of the reasoning performed and investigate the model has correct syntactic and semantic understanding probing is used. Here, I used mnestic probing to investigate the Sci-five model, trained on clinical trial. I investigated the model for feature learnt with respect to natural logic. To achieve the target, I trained task specific probes. Used these probes to investigate the final layers of trained model. Then, fine tuned the trained model using iterative null projection. The results shows that model accuracy improved. During experimentation, I observed that size of the probe has affect on the fine tuning process.

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。

↑