Paper
Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression
ML4H 2026 poster (OpenReview SydnfDKAmG, 2026-10-30)
TL;DR
Studies whether compressing PPG FMs keeps health information: compact contrastive encoders, rhythm-based knowledge distillation and post-training quantization, probed for participant-level traits and segment-level physiology. Traits survive small encoders; physiology needs more capacity and is harder under a contrastive objective. Pretraining objective, not scale alone, governs the trait/physiology split.
- Form factor: wrist
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Cite this paper
Ebers, M. R., Lymysalo, V., Kamran, F., Jewell, S., Zhang, X., Futoma, J., & Vallat, R. (2026). Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression. ML4H 2026 poster. https://openreview.net/forum?id=SydnfDKAmG
Ebers, Megan R, Venla Lymysalo, Fahad Kamran, Sean Jewell, Xi Zhang, Joseph Futoma, and Raphael Vallat. 2026. "Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression." ML4H 2026 poster. https://openreview.net/forum?id=SydnfDKAmG.
Ebers, M. R., Lymysalo, V., Kamran, F., Jewell, S., Zhang, X., Futoma, J. and Vallat, R. (2026) 'Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression', ML4H 2026 poster. Available at: https://openreview.net/forum?id=SydnfDKAmG
Ebers, Megan R, et al. "Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression." ML4H 2026 poster, 2026. https://openreview.net/forum?id=SydnfDKAmG.
M. R. Ebers et al., "Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression," ML4H 2026 poster, 2026, [Online]. Available: https://openreview.net/forum?id=SydnfDKAmG.
@inproceedings{ebers2026toward,
title = {{Toward on-device foundation models for wearable PPG: characterizing latent health structure under compression}},
author = {Ebers, Megan R. and Lymysalo, Venla and Kamran, Fahad and Jewell, Sean and Zhang, Xi and Futoma, Joseph and Vallat, Raphael},
year = {2026},
booktitle = {ML4H 2026 poster},
url = {https://openreview.net/forum?id=SydnfDKAmG}
}Added to the ChatPPG research hub