SentZero: sentence-centric VL pretraining boosts zero-shot multi-task chest X-ray analysis

Hangyul Yoon · hf · 2026-09-30

SentZero is a sentence-centric vision-language pretraining framework for zero-shot, multi-task chest X-ray analysis. Targeting limited positive-pair diversity and false negatives from clinically equivalent sentences recurring across patients, it uses LLM-based abstract-level sentence structuring to expand positive pairs, adds a loss term to mitigate false negatives, and applies sentence-conditioned residual modulation of visual embeddings. It outperforms prior multi-task zero-shot methods across diverse downstream tasks and datasets.

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