Next-Token Prediction Learns Generalisable Representations of Sleep Physiology
Researchers introduce Hypnos, a multi-modal foundation model trained on next-token prediction that learns generalizable representations of sleep physiology from over 20,000 polysomnography recordings across eight sensing modalities. The model achieves performance parity with supervised baselines on sleep stage classification while using 100× less labeled data and demonstrates cross-domain generalization by outperforming specialized models on daytime cardiac tasks.