collaborators

5 papers

math.ST2026

Exponential mixing properties of nonlinear functional autoregressive models

Shuntarou Suzuki, Yoshikazu Terada

The importance of functional data analysis has increased substantially in recent years. In machine learning, nonlinear function regression based on deep neural networks is referred…

cs.CV2026

Neural Stochastic Processes for Satellite Precipitation Refinement

Shunya Nagashima, Takumi Bannai, Shuitsu Koyama +2

Accurate precipitation estimation is critical for flood forecasting, water resource management, and disaster preparedness. Satellite products provide global hourly coverage but con…

cs.LG2026

A Decomposition-based State Space Model for Multivariate Time-Series Forecasting

Shunya Nagashima, Shuntaro Suzuki, Shuitsu Koyama +1

Multivariate time series (MTS) forecasting is crucial for decision-making in domains such as weather, energy, and finance. It remains challenging because real-world sequences inter…

eess.SP2026

PENGUIN: General Vital Sign Reconstruction from PPG with Flow Matching State Space Model

Shuntaro Suzuki, Shuitsu Koyama, Shinnosuke Hirano +1

Photoplethysmography (PPG) plays a crucial role in continuous cardiovascular health monitoring as a non-invasive and cost-effective modality. However, PPG signals are susceptible t…

math.ST2024

Adaptive Bayes estimator for stochastic differential equations with jumps under small noise asymptotics

Shuntaro Suzuki, Takaaki Wakamatsu, Yasutaka Shimizu

In this paper, we consider parameter estimation for stochastic differential equations driven by Wiener processes and compound Poisson processes. We assume unknown parameters corres…