Zhang, Haimeng

uncg

There are 4 item/s.

TitleDateViewsBrief Description
Circulant matrices on global data analysis 2017 701 In this thesis, we investigate the unbiasedness of the commonly used covariance and variogram estimators when the underlying process is assumed to be stationary on the circle or axially symmetric on the sphere. We represent both estimators as a quadr...
The Wavelet-Galerkin method on global random processes 2021 74 One of the main usages of covariance function or kernel is to capture the spatial or temporal dependency of a random process or random field. Covariance functions have been widely used in many areas such as environmental statistics, economics, machin...
Data generation and estimation for axially symmertic processes on the sphere 2016 867 Data from global networks and satellite sensors have been used to monitor a wide array of processes and variables, such as temperature, precipitation, etc. The modeling and analysis of global data has been extensively studied in the realm of spatial ...
Spectral estimation for random processes with stationary increments 2018 1230 In studying a stationary random process on R, the covariance function is commonlyused to characterize the second-order spatial dependency. Through the inversionof Fourier transformation, its corresponding spectral density has been widely usedto descr...