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arXiv 2012.00180stat.MEmath.STstat.APstat.TH
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用于变点回归函数估计的各向异性局部常数平滑方法

Anisotropic local constant smoothing for change-point regression function estimation

John R. J. Thompson, W. John Braun

AI总结:

本文提出一种各向异性局部常数平滑方法,利用数据生成过程估计指导变点数据去噪,证明其具有$O(n^{-1/(q+2)})$收敛速度,并在模拟数据和微型火灾蔓延图像上验证了有效性。

摘要:

理解加拿大任何地区的森林火灾蔓延对于促进森林健康以及保护人类生命和基础设施至关重要。从噪声图像中量化火灾蔓延——其中火灾区域由变点边界分隔——对于忠实估计火灾蔓延速率至关重要。在本研究中,我们开发了一种统计上一致的平滑估计器,使我们能够对来自微型火灾实验的火灾蔓延图像进行去噪。我们为变点数据开发了一种各向异性平滑方法,该方法利用对底层数据生成过程的估计来指导平滑。我们证明各向异性局部常数回归估计器具有一致性,收敛速度为$O\left(n^{-1/{(q+2)}}\right)$。我们在模拟的一维和二维变点数据以及来自微型火灾实验的火灾蔓延图像上展示了其有效性。

英文摘要:

Understanding forest fire spread in any region of Canada is critical to promoting forest health, and protecting human life and infrastructure. Quantifying fire spread from noisy images, where regions of a fire are separated by change-point boundaries, is critical to faithfully estimating fire spread rates. In this research, we develop a statistically consistent smooth estimator that allows us to denoise fire spread imagery from micro-fire experiments. We develop an anisotropic smoothing method for change-point data that uses estimates of the underlying data generating process to inform smoothing. We show that the anisotropic local constant regression estimator is consistent with convergence rate $O\left(n^{-1/{(q+2)}}\right)$. We demonstrate its effectiveness on simulated one- and two-dimensional change-point data and fire spread imagery from micro-fire experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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