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Theory of Probability and Mathematical Statistics

ISSN 1547-7363(online) ISSN 0094-9000(print)

   
 
 

 

Estimation of the Hurst and diffusion parameters in fractional stochastic heat equation


Authors: D. A. Avetisian and K. V. Ralchenko
Journal: Theor. Probability and Math. Statist. 104 (2021), 61-76
MSC (2020): Primary 60G22, 60H15, 62F10, 62F12
DOI: https://doi.org/10.1090/tpms/1145
Published electronically: September 24, 2021
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Abstract: The paper deals with a one-dimensional stochastic heat equation driven by a space-only fractional Brownian noise. We construct strongly consistent estimators of two unknown parameters, namely, the diffusion parameter $\sigma$ and the Hurst parameter $H\in (0,1)$, based on the discrete-time observations of a solution. We also prove joint asymptotic normality of the estimators in the case $H\in \left (0,\frac 34\right )$.


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Additional Information

D. A. Avetisian
Affiliation: Department of Probability Theory, Statistics and Actuarial Mathematics, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
Email: diana.avetisian2017@gmail.com

K. V. Ralchenko
Affiliation: Department of Probability Theory, Statistics and Actuarial Mathematics, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
Email: kostiantynralchenko@knu.ua

Keywords: Stochastic partial differential equation, fractional Brownian motion, strong consistency, asymptotic normality
Received by editor(s): April 19, 2021
Published electronically: September 24, 2021
Additional Notes: The second author was supported by the National Research Fund of Ukraine under grant 2020.02/0026.
Article copyright: © Copyright 2021 Taras Shevchenko National University of Kyiv