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Parametric estimation for linear parabolic SPDEs in two space dimensions based on temporal and spatial increments
Yozo Tonaki, Yusuke Kaino, Masayuki Uchida · 2023-04-19 · via math.ST updates on arXiv.org

We deal with parameter estimation for a linear parabolic second-order stochastic partial differential equation in two space dimensions driven by two types of $Q$-Wiener processes based on high frequency data with respect to time and space. We propose minimum contrast estimators of the coefficient parameters based on temporal and spatial squared increments, and provide adaptive estimators of the coefficient parameters based on an approximate coordinate process. We also give an example and simulation results of the proposed estimators.

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