arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2301.04558cs.CVcs.CL
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学习利用时间结构进行生物医学视觉-语言处理

Learning to Exploit Temporal Structure for Biomedical Vision-Language Processing

Microsoft Health Futures(微软健康未来部门)
Shruthi Bannur, Stephanie Hyland, Qianchu Liu, Fernando Pérez-García, Maximilian Ilse, Daniel C. Castro, Benedikt Boecking, Harshita Sharma, Kenza Bouzid, Anja … 展开作者

Shruthi Bannur, Stephanie Hyland, Qianchu Liu, Fernando Pérez-García, Maximilian Ilse, Daniel C. Castro, Benedikt Boecking, Harshita Sharma, Kenza Bouzid, Anja Thieme, Anton Schwaighofer, Maria Wetscherek, Matthew P. Lungren, Aditya Nori, Javier Alvarez-Valle, Ozan Oktay

AI总结:

本文提出BioViL-T模型,通过联合编码当前及先前的医学图像和报告,利用时间结构增强生物医学视觉-语言表示,并在进展分类、短语定位和报告生成等任务上取得最先进性能。

摘要:

视觉-语言处理中的自监督学习利用成像与文本模态之间的语义对齐。先前在生物医学VLP方面的工作大多依赖于单一图像和报告对的对齐,尽管临床记录通常会引用先前的图像。这不仅导致模态之间的对齐不佳,而且错失了通过数据中现有的时间内容利用丰富自监督的机会。在这项工作中,我们在训练和微调期间明确考虑可用的先前图像和报告。我们的方法名为BioViL-T,使用一个CNN-Transformer混合多图像编码器与文本模型联合训练。它被设计为能够灵活应对随时间出现的挑战,例如姿态变化和缺失输入图像。所得模型在单图像和多图像设置的下游任务中均表现出色,在(I)进展分类、(II)短语定位和(III)报告生成方面达到了最先进的性能,同时在疾病分类和句子相似性任务上提供了一致的改进。我们发布了一个新颖的多模态时间基准数据集MS-CXR-T,以从时间语义角度量化视觉-语言表示的质量。我们的实验结果表明,纳入先前图像和报告以充分利用数据具有优势。

英文摘要:

Self-supervised learning in vision-language processing exploits semantic alignment between imaging and text modalities. Prior work in biomedical VLP has mostly relied on the alignment of single image and report pairs even though clinical notes commonly refer to prior images. This does not only introduce poor alignment between the modalities but also a missed opportunity to exploit rich self-supervision through existing temporal content in the data. In this work, we explicitly account for prior images and reports when available during both training and fine-tuning. Our approach, named BioViL-T, uses a CNN-Transformer hybrid multi-image encoder trained jointly with a text model. It is designed to be versatile to arising challenges such as pose variations and missing input images across time. The resulting model excels on downstream tasks both in single- and multi-image setups, achieving state-of-the-art performance on (I) progression classification, (II) phrase grounding, and (III) report generation, whilst offering consistent improvements on disease classification and sentence-similarity tasks. We release a novel multi-modal temporal benchmark dataset, MS-CXR-T, to quantify the quality of vision-language representations in terms of temporal semantics. Our experimental results show the advantages of incorporating prior images and reports to make most use of the data.

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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