摘要翻译:
本文证明了在有界单连通区域$omega$中观察稠密网格上的变形随机场$z\circ f$时,估计光滑可逆变换$f:\bbb{R}^2到\bbb{R}^2$的定域渐近结果,其中$z$是$bbb{R}^2$上的各向同性高斯随机场。估计$\hat{f}$构造在一个简单连通的区域$U$上,使得$\覆盖{U}\子集\omega$,并利用核平滑二次变分、Bergman投影和准形式化理论的结果来定义。在随机场$Z$和变形$f$的温和假设下,我们证明了当网格间距为零时,概率为1的$U$紧致子集上的$\hat{f}\到R_{theta}f+C$一致,其中$R_{theta}$是不可识别的旋转,$C$是不可识别的平移。
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英文标题:
《Consistent estimates of deformed isotropic Gaussian random fields on the
plane》
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作者:
Ethan Anderes, Sourav Chatterjee
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最新提交年份:
2009
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分类信息:
一级分类:Mathematics 数学
二级分类:Statistics Theory 统计理论
分类描述:Applied, computational and theoretical statistics: e.g. statistical inference, regression, time series, multivariate analysis, data analysis, Markov chain Monte Carlo, design of experiments, case studies
应用统计、计算统计和理论统计:例如统计推断、回归、时间序列、多元分析、数据分析、马尔可夫链蒙特卡罗、实验设计、案例研究
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一级分类:Statistics 统计学
二级分类:Statistics Theory 统计理论
分类描述:stat.TH is an alias for math.ST. Asymptotics, Bayesian Inference, Decision Theory, Estimation, Foundations, Inference, Testing.
Stat.Th是Math.St的别名。渐近,贝叶斯推论,决策理论,估计,基础,推论,检验。
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英文摘要:
This paper proves fixed domain asymptotic results for estimating a smooth invertible transformation $f:\Bbb{R}^2\to\Bbb{R}^2$ when observing the deformed random field $Z\circ f$ on a dense grid in a bounded, simply connected domain $\Omega$, where $Z$ is assumed to be an isotropic Gaussian random field on $\Bbb{R}^2$. The estimate $\hat{f}$ is constructed on a simply connected domain $U$, such that $\overline{U}\subset\Omega$ and is defined using kernel smoothed quadratic variations, Bergman projections and results from quasiconformal theory. We show, under mild assumptions on the random field $Z$ and the deformation $f$, that $\hat{f}\to R_{\theta}f+c$ uniformly on compact subsets of $U$ with probability one as the grid spacing goes to zero, where $R_{\theta}$ is an unidentifiable rotation and $c$ is an unidentifiable translation.
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PDF链接:
https://arxiv.org/pdf/710.0379