ChatPPG.
Join free
Model

Continuous HRV from PPG (state-space)

code release

PPGIMUTempOpen codeWeights: open
Code Cite
UnconfirmedCatalog paper date: Not reportedAdded to atlas: Oct 19, 2026
GitHub starsView on GitHub (opens in a new tab)

Activity counts measure attention, not model quality. Missing counts are unknown. Publication status follows the linked source; a listed venue alone does not confirm peer review.

Form factor
Wrist
Signals
PPG, IMU, Temp
License

none declared (no LICENSE file in repo at the recorded commit; all rights reserved by default)

At a glance
Type
Task model
Modalities
PPGIMUTemp
Form factor
Wrist
Parameters
Not reported
Architecture
Not reported
Venue
Not reported
Year
Not reported
arXiv
Not reported
DOI
Not reported
Code
Open (opens in a new tab)
Weights
Open
Licence
none declared (no LICENSE file in repo at the recorded commit; all rights reserved by default)
Caveats
Not reported
Datasets
Not reported
Added
Oct 19, 2026
Updated
Oct 19, 2026

Original description

The method estimates ECG-aligned inter-beat intervals (IBIs) from wearable photoplethysmography (PPG), then refines the estimates with a causal, learnable state-space model (SSM). Motion (IMU) and temperature are used as auxiliary signals when available. The result is a continuous IBI sequence from which standard HRV measures, including SDNN, RMSSD, and LF/HF power, are computed.

The following are the reported IBI results (mean ± standard deviation across subjects/folds, in ms). r is Pearson correlation with ECG-derived IBI.

For full SDNN, RMSSD, and frequency-domain results, see the manuscript. Example experiment artifacts—checkpoints, per-subject arrays, and fold summaries—are in results/.

Verbatim fromGitHub· Description from the repository README

Continuous HRV from PPG (state-space): ChatPPG research summary card

How it works

How Continuous HRV from PPG (state-space) works: Input signals → Model → Downstream tasksInput signals: PPG (Photoplethysmogram); IMU (Accelerometer, 3-axis); Temperature (Skin temperature). Model: Continuous HRV from PPG (state-space) (State-space model).Input signalsPPG: PhotoplethysmogramPPGPhotoplethysmogramIMU: Accelerometer, 3-axisxyzIMUAccelerometer, 3-axisTemperature: Skin temperatureTemperatureSkin temperatureModelContinuous HRV from PPG…State-space model
Inputs
PPG, IMU, Temp
Approach
code release · open weights

Datasets

No public datasets linked yet.

Cite

APA

Continuous HRV from PPG (state-space). (n.d.).

BibTeX

@misc{continuoushrvppgcontinuous,
  title         = {{Continuous HRV from PPG (state-space)}}
}

Built from the hub record. Check it against the publisher before submitting.

History

  1. Added to the ChatPPG research hub