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arxiv arXiv cs.LG · 6h ago

Patient-Aware Contrastive Learning Preserves Per-Patient Structure in RR-Interval Representations

The article addresses the challenge of contrastive representation learning on physiological signals where subject-specific baselines interfere with class-level objectives, causing models to lose individual variation necessary for generalization. The authors propose a patient-aware contrastive objective for Paroxysmal Atrial Fibrillation detection that forms positive pairs only from same-patient segments to preserve sinus rhythm baselines while separating classes.