复杂空间过程的贝叶斯采样窗口设计

Bayesian design with sampling windows for complex spatial processes

Journal of the Royal Statistical Society. Series C: Applied Statistics · 2023
被引 6
ABS 3

中文导读

提出一种完全贝叶斯设计方法,用于具有复杂协方差结构的空间过程,并通过高斯过程模拟找到采样窗口而非精确点,以解决实际中无法在特定点采样的难题,适用于河流水温与珊瑚礁监测。

Abstract

Abstract Optimal design facilitates intelligent data collection. In this paper, we introduce a fully Bayesian design approach for spatial processes with complex covariance structures, like those typically exhibited in natural ecosystems. Coordinate exchange algorithms are commonly used to find optimal design points. However, collecting data at specific points is often infeasible in practice. Currently, there is no provision to allow for flexibility in the choice of design. Accordingly, we also propose an approach to find Bayesian sampling windows, rather than points, via Gaussian process emulation to identify regions of high design efficiency across a multi-dimensional space. These developments are motivated by two ecological case studies: monitoring water temperature in a river network system in the northwestern United States and monitoring submerged coral reefs off the north-west coast of Australia.

空间统计贝叶斯设计生态监测高斯过程