Abstract

Designs that produces spatially balanced, or well-spread, samples are desirable as they increase the probability of obtaining a sample highly representative of the population. Spatially correlated Poisson sampling (SCPS) is a method for selecting well-spread samples. In the SCPS method, the sampling outcomes (inclusion or exclusion of units) are decided sequentially. After each decision, the inclusion probabilities of surrounding units are updated. A specific order for deciding the sampling outcomes is not enforced for SCPS, that is, the order can be chosen randomly or be fixed. A new modified method called locally correlated Poisson sampling (LCPS) is suggested. In this new method, the order of the decisions makes sure the inclusion probabilities are updated (more) locally. As a result, a stronger negative correlation between inclusion indicators of nearby units is achieved. Simulations on various data sets show that the resulting samples from LCPS, in general, are more spatially balanced and produce lower variance than samples from SCPS and the local pivotal method.

Keywords

auxiliary variables; design-based sampling; environmental monitoring; local pivotal method; spatially correlated Poisson sampling; unequal probability sampling

Published in

Environmetrics
2024, Volume: 35, number: 2, article number: e2832
Publisher: WILEY

SLU Authors

• Prentius, Wilmer

  • Department of Forest Resource Management, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Probability Theory and Statistics
Environmental Sciences


Publication identifier

DOI: https://doi.org/10.1002/env.2832

Permanent link to this page (URI)

https://res.slu.se/id/publ/127118