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Training Trajectories Reveal Cross-Modality Generalization Gaps in 12-Lead–Trained AI-ECG Deployed on Smartwatch Recordings
Hak Seung Lee;
Jong-Hwan Jang;
Sora Kang;
Yong-Yeon Jo;
Jeong Min Son;
Min Sung Lee;
Kyung Su Kim;
Joon-myoung Kwon;
Kyung-Hee Kim
ABSTRACT
AI-ECG models trained on 12-lead–derived Lead I demonstrated comparable endpoint discrimination on smartwatch-derived Lead I but substantially divergent training trajectories, revealing cross-modality generalization gaps not detected by endpoint metrics alone.
Citation
Please cite as:
Lee HS, Jang JH, Kang S, Jo YY, Son JM, Lee MS, Kim KS, Kwon Jm, Kim KH
Training Trajectories Reveal Cross-Modality Generalization Gaps in 12-Lead–Trained AI-ECG Deployed on Smartwatch Recordings