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Author

Ziwei Xu

AIST, Japan

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Open access Sep 2026

ITCD: implicit trajectory-constrained diffusion for consistent time series imputation

The Implicit Trajectory-Constrained Diffusion network (ITCD) is proposed, which employs a two-stage diffusion architecture to mitigate the distribution shift caused by padding, thereby enabling better adaptation to realistic data and achieving more consistent imputations.

Siyuan Ma, Ziwei Xu, R. Ichise · 0 citations
Open access 2026

NASDiff: Noise-Aware Diffusion With Short-Trajectory Learning for Consistent Time Series Imputation

Noise-Aware Diffusion with Short-trajectory learning for consistent time series imputation (NASDiff) builds a noise-aware diffusion framework that explicitly models distinct noise sources and adopts a low-frequency-oriented diffusion process to decouple diffusion-added noise from intrinsic high-frequency component, the...

Siyuan Ma, Ziwei Xu, R. Ichise · 0 citations

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