Paper

PhysioSplit: Delay-Aware Context-Selective Fusion under Cohort Shift

Under review2026Added Oct 6, 2026

  • AB

Authors: Anonymous (ICLR 2027 double-blind)

ICLR 2027 submission (under review)

TL;DR

Estimates a bounded fractional ECG–PPG arrival-delay proxy with a continuous-delay state-space encoder and factorizes the representation into slowly varying context codes and beat-level event codes. Target calibration adapts only the context encoder; event pathway and shared timing stay frozen. Across five cohorts: external waveform degradation ratio 2.23 (SiamQuality) → 1.55; RMSE on the hardest waveform setting 13.21 → 6.74 mmHg; Macro-F1 0.847 on source cohort and 0.724 on a zero-shot ICD-derived phenotype task.

  • Form factor: any

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Tasks & signals

Tasks

Pulse arrival timeBlood pressure

Signals

Keywords

ECG-PPG-fusionPAT-proxystate-spacedomain-shiftcalibrationBP-waveformICLR-2027-sub

How it works

How Method works: Setup → Method → TargetSetup: Signals (PPG, ECG); Form factor (any). Method: Method (State-space model). Target: Pulse arrival time; Blood pressure.SetupSignals: PPG, ECGSignalsPPG, ECGForm factor: anyForm factoranyMethodMethodState-space modelTargetPulse arrival timePulse arrival timeBlood pressureBlood pressure

Cite this paper

APA

PhysioSplit: Delay-Aware Context-Selective Fusion under Cohort Shift. (2026). ICLR 2027 submission. https://openreview.net/forum?id=sbTpcTCpRl

BibTeX

@misc{physiosplitdelay2026physiosplit,
  title         = {{PhysioSplit: Delay-Aware Context-Selective Fusion under Cohort Shift}},
  year          = {2026},
  howpublished  = {ICLR 2027 submission},
  url           = {https://openreview.net/forum?id=sbTpcTCpRl}
}

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