الملخص
Clinical diagnosis is inherently sequential: clinicians escalate from cheap to costly tests only when additional evidence is expected to resolve diagnostic uncertainty. We present ActiveMedAgent, a framework that brings this cost-aware sequential logic to multimodal medical AI. Given a frozen, API-accessed vision-language model, ActiveMedAgent tracks probability distributions over candidate diagnoses and scores each acquisition by its per-step diagnostic utility minus cost. A lightweight MLP controller is then trained offline on these scored trajectories, learning when to request additional evidence and when to commit. Across three commonly used benchmarks, trajectory-based policy learning consistently outperforms both unguided acquisition and full-modality baselines. Notably, we identify an information overload effect. In 175 cases, the agent produces a correct diagnosis with fewer channels while the full-modality baseline fails, showing that learning what to omit can be as important as learning what to acquire.
الكلمات المفتاحية
بيانات النشر
- المجلة
- غير متاح
- وصول مفتوح
- وصول مفتوح أخضر
اقتبس هذه المقالة
APA 7
Ma, W., Yu, X., Qiu, P., Yang, J., An, Z., Dong, X., Zhao, X., & Liu, X. (2026). ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis. https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis
MLA 9
Ma, Weiwei, et al. "ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis." https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis.
شيكاغو (المؤلف–التاريخ)
Ma, Weiwei, Xiaobing Yu, Peijie Qiu, Jin Yang, Zhaoqi An, Xuanzhao Dong, Xiaoqi Zhao, and Xiaofeng Liu. 2026. "ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis." https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis.
هارفارد
Ma, W., Yu, X., Qiu, P., Yang, J., An, Z., Dong, X., Zhao, X. and Liu, X. (2026) 'ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis', Available at: https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis.
فانكوفر
Ma W, Yu X, Qiu P, Yang J, An Z, Dong X, et al. ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis. https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis
IEEE
W. Ma, X. Yu, P. Qiu, J. Yang, Z. An, X. Dong, X. Zhao, and X. Liu, "ActiveMedAgent: Cost-Aware Trajectory Learning for Multimodal Medical Diagnosis," https://omanscience.com/ar/articles/activemedagent-cost-aware-trajectory-learning-for-multimodal-medical-diagnosis.