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A time-fractional Kalman filter

Olfa Draouil, Rahma Yasmina Moulay Hachemi, Bernt Øksendal, Aliane Abderrahmen

Source record

Source: arXiv

Published: Aug 25, 2026

arXiv: 2608.25164

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Source abstract

We study a linear filtering problem in which the signal process is described by a time-fractional linear stochastic differential equation driven by Brownian motion. We derive a stochastic integral equation for the conditional mean alongside a Riccati--Volterra type integral equation for the mean-square error function. As a core application, we introduce a time-fractional state-estimation framework for modelling learning trajectories in children with developmental dyscalculia.

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A time-fractional Kalman filter — Mathematical Frontier Network