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Keum San Chun

3 accepted papers

2026

HiMAE: Hierarchical Masked Autoencoders Discover Resolution-Specific Structure in Wearable Time Series

ICLR 2026poster

Wearable sensors provide abundant physiological time series observations, yet the resolution at which we should extract features for downstream tasks remain unclear. We hypothesize that temporal resolution is a fundamental axis of representation learning, with different clinical and behavioral outco…

Cited by 0SourcecodeScholar
2026

Physiology-Aware Masked Cross-Modal Reconstruction for Biosignal Representation Learning

ICML 2026poster

Biosignals acquired from different locations on the body often provide temporally ordered views of the same underlying physiological process. However, most existing self-supervised learning methods treat these signals as interchangeable views, overlooking the directional temporal dynamics that link …

Cited by 0SourceScholar
2026

WEIGHTED TEMPORAL DECAY LOSS FOR LEARNING WEARABLE PPG DATA WITH SPARSE CLINICAL LABELS

ICASSP 2026poster

Advances in wearable computing and AI have increased interest in leveraging PPG for health monitoring over the past decade. One of the biggest challenges in developing health algorithms based on such biosignals is the sparsity of clinical labels, which makes biosignals temporally distant from lab dr…

Cited by 0SourcePDFScholar