arXiv Machine Learning

Timesynth: A Temporal Fidelity Framework for Health Signal Digital Twins

arXiv:2607. 00431v1 Announce Type: new Abstract: Forecasting models for health-signal digital twins must preserve the oscillatory, frequency, phase, and state-transition dynamics of physiological signals, yet the pointwise metrics used to benchmark them cannot detect when these fundamental properties are lost.

arXiv AI
3d ago

CAMOS: Coupled Oscillatory State-Space Model for Multimodal Clinical Time-Series

CAMOS is a coupled oscillatory state‑space model designed for multimodal clinical time‑series that are irregularly sampled and often incomplete. It addresses a representational limitation of linear state‑space models by allowing the transition operator to depend on which modalities are present, using a bank of second‑order oscillators coupled through a gated matrix. On the ADNI dataset, CAMOS outperforms both uncoupled oscillatory models and clinical fusion models in same‑visit staging, landmark prediction, and longitudinal forecasting, and uniquely avoids collapsing to the majority class when transferred zero‑shot to OASIS‑3.

By Maxx Richard Rahman, Mostafa Hammouda, Wolfgang Maass
arXiv Machine Learning
Aug 4

Rethinking PPG-based Sleep Staging: Datasets, Metrics, and Benchmarks

arXiv:2608. 00943v1 Announce Type: cross Abstract: Automated sleep staging assigns discrete stage labels to successive time epochs throughout an overnight recording; conventionally each window spans at least 30 seconds, reflecting the minimum temporal resolution of the clinical scoring standard.

By Shuntian Zheng, Jiawei Wang, Cong Fu, Huan Yu, Chen Chen, Yu Guan, Sai Gu
arXiv Machine Learning
Aug 14

CardioState-JEPA: Delay-Aware Cross-Modal Learning of a Shared Cardiac Representation

arXiv:2608. 12944v1 Announce Type: new Abstract: Electrocardiography (ECG), photoplethysmography (PPG), and phonocardiography (PCG) provide complementary views of the same cardiac cycle, yet existing cardiac foundation models are trained for a single sensing modality, leaving the shared physiology across sensors unexploited.

By Hamza Shafiq, Hung Manh Pham, Bin Zhu, Pan Zhou, Jun Hu, Aaqib Saeed
arXiv Machine Learning
Sep 22

Large language models in medical time series analysis

arXiv:2609.22262v1 Announce Type: cross Abstract: Medical time series (MedTS), including electrocardiograms (ECG), electroencephalograms (EEG), photoplethysmography (PPG), and vital-sign recordings,...

By Yu Han, Cigdem Beyan, Xiang Zhang, Xiaofeng Liu, Nan Liu, Jimeng Sun, Shenda Hong, Cheng Ding, Vittorio Murino