Author

Imran Razzak

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Preprint Aug 2026

MVC-Bench: Benchmarking Calibration of Medical Vision-Language Models

The underlying causes of miscalibration in VLMs and Medical-VLMs are investigated and a simple train-time calibration method, Multi-Class Margin (MCM) regularization, is proposed, which achieves lowest ECE on 10 out of 12 settings in in-domain and remains competitive under domain shifts.

Ashshak Sharifdeen, Shihab Aaqil Ahamed, Ufaq Khan et al. · 2 citations

Preprint Aug 2026

Counterfactual Anatomy-guided Spatial-Temporal Decoding for Annotation-Free Hallucination Mitigation in Medical VLMs

Experiments on the SLAKE and MIMIC-CXR datasets demonstrate that CAST consistently outperforms strong baselines and surpasses decoding strategies reliant on ground truth, and indicates that compact, automatically selected regions provide highly effective contrastive guidance without expert annotations.

Yifan Lu, A. Dukre, Abhijit Das et al. · 0 citations