Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-06-26T13:26:38.885006Z
Paper Citation Record · LEDGER
As of 10 August 2026, this Paper Citation Record lists 22 of 22 outbound references and 0 inbound Pith citation observations for arXiv:2606.21436.
A citation records a reference. It does not transfer a finding from one paper to another.
Typed states for the displayed outbound observations.
Source: paper_references, paper_reference_links, observed 2026-06-26T13:26:38.885006Z
One-hop event checks from named stored sources.
Source: scholarly_work_events, retraction_status_cache, observed 2026-08-10T06:31:04.303077+00:00
Pith citing papers itemized under the disclosed page cap.
Source: paper_references, paper_reference_links
A source-named dated measurement, never combined with another source.
Source: cited_works
22 of 22 outbound references displayed
External citation measurements
No source-named external measurement is stored.
Observation f835def8-5d02-4570-8835-01e406d29915 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Large scale population assessment of physical activity using wrist worn accelerometers: The UK Biobank study,
Reference 1
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 1e178cfc-860e-425c-a274-c497a952746d · outbound
Reference 2
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 0489cd13-696f-4232-9c26-b82a52d412db · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Fitbit Charge HR wireless heart rate monitor: Validation study conducted under free-living conditions,
Reference 3
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation dcf48673-aaa3-4ecc-82f5-081ac44e3278 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Guidelines for wrist-worn consumer wearable assessment of heart rate in biobehavioral research,
Reference 4
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9be85c9d-80c0-46e7-8da5-d93b536d1f8f · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Comprehensive comparison of Apple Watch and Fitbit monitors in a free-living setting,
Reference 5
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 816c0c1b-5c72-43b3-89ee-966d94bf7210 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Wrist-worn devices for the measurement of heart rate and energy expenditure: A validation study for the Apple Watch 6, Polar Vantage V and Fitbit Sense,
Reference 6
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 6af66154-d011-48be-93ff-272277eb30f4 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Measurement of heart rate using the Polar OH1 and Fitbit Charge 3 wearable devices in healthy adults during light, moderate, vigorous, and sprint-based exercise: Validation study,
Reference 7
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b11e1af8-183e-41da-a464-9207d6296efa · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Assessment of Samsung Galaxy Watch4 PPG-based heart rate during light-to-vigorous physical activities,
Reference 8
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 74180723-0c9f-44a3-8501-332e6d4cee84 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Preliminary assessment of the Samsung Galaxy Watch 5 accuracy for the monitoring of heart rate and heart rate variability parameters,
Reference 9
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 46f50c0b-3223-4bb7-9953-6809f3c9aea4 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Heart rate measurement accuracy of Fitbit Charge 4 and Samsung Galaxy Watch Active2: Device evaluation study,
Reference 10
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 4ee2d8a7-ce0c-49d7-84d2-6c9563fa85dc · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Validity of the wrist-worn Polar Vantage V2 to measure heart rate and heart rate variability at rest,
Reference 11
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 92c5eb00-d40c-463d-af6a-08fead7afb2e · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Commercial smart watches and heart rate monitors: A concurrent validity analysis,
Reference 12
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 3aee438c-9c2f-4134-9b8d-88df5b5a339a · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Criterion validity and accuracy of a heart rate monitor,
Reference 13
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 37d876f1-604d-46b2-9ebd-4085e5326fa2 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Wrist-worn wearables for monitoring heart rate and energy expenditure while sitting or performing light-to-vigorous physical activity: Validation study,
Reference 14
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 5c87ebc7-370e-438a-b659-8d80788b6914 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Deep PPG: Large-scale heart rate estimation with convolutional neural networks,
Reference 15
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation c46e805f-bf22-4a78-be68-5d2f4a0bd71c · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Deep learning fused wearable pressure and PPG data for accurate heart rate monitoring,
Reference 16
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 9f0e20de-9ccd-4696-8065-77af34db78d9 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data DeepHeart: A deep learning approach for accurate heartrate estimation from PPG signals,
Reference 17
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation 878ef69f-4922-4764-accf-5d991164abe8 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data A Scoping Review of Deep Learning Methods for Photoplethysmography Data
Reference 18
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-10T06:31:04.303077+00:00.
Observation 2a34e75d-d22c-40e8-8378-967018a98a1b · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data A review of wearable multi-wavelength photoplethysmography,
Reference 19
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation f5014e31-c475-4bb8-8033-d6ef9805799e · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data How to wear Google Pixel Watch,
Reference 20
Source-reported events for the cited work
No event found in the named queried sources as of 2026-08-10T06:31:04.303077+00:00.
Observation e0f25444-770e-4254-a9d4-b0170921fd80 · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Reliability and validity of the combined heart rate and movement sensor Actiheart,
Reference 21
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
Observation b3e5870f-ac13-47e2-af71-a12376341d1f · outbound
Pixel Watch: Robust Heart Rate Sensing from Multipath PPG and On-Device Deep Learning Trained on 10,000 hours of Free-Living and Fitness Data Gaussian process robust regression for noisy heart rate data,
Reference 22
Source-reported events for the cited work
Unavailable: canonical work link unavailable.
No inbound Pith citation observations are available.