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- W4288362671 abstract "We investigate Lipschitz-Killing curvatures for excursion sets of random fields on $mathbb R^2$ under small spatial-invariant random perturbations. An expansion formula for mean curvatures is derived when the magnitude of the perturbation vanishes, which recovers the Gaussian Kinematic Formula at the limit by contiguity of the model. We develop an asymptotic study of the perturbed excursion area behaviour that leads to a quantitative non-Gaussian limit theorem, in Wasserstein distance, for fixed small perturbations and growing domain. When letting both the perturbation vanish and the domain grow, a standard Central Limit Theorem follows. Taking advantage of these results, we propose an estimator for the perturbation which turns out to be asymptotically normal and unbiased, allowing to make inference through sparse information on the field." @default.
- W4288362671 created "2022-07-29" @default.
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- W4288362671 date "2019-05-01" @default.
- W4288362671 modified "2023-09-30" @default.
- W4288362671 title "On the excursion area of perturbed Gaussian fields" @default.
- W4288362671 doi "https://doi.org/10.48550/arxiv.1905.00206" @default.
- W4288362671 hasPublicationYear "2019" @default.
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