# PPG-Bench

An open benchmark evaluates five public PPG foundation models across nine datasets, 26 tasks and four downstream adaptation regimes under one protocol, finding that 35.3% of 68 task-regime combinations show no meaningful gain over a random or constant baseline and 83.8% show no PPG-specific model beating both classical pulse-rate-variability features and a generic time-series foundation model.

An open benchmark evaluates five public PPG foundation models across nine datasets, 26 tasks and four downstream adaptation regimes under one protocol, finding that 35.3% of 68 task-regime combinations show no meaningful gain over a random or constant baseline and 83.8% show no PPG-specific model beating both classical pulse-rate-variability features and a generic time-series foundation model.