Andreis F & Bonetti M (2018) A proposal for a two-step sampling design to oversample units responding to prescribed characteristics. Environmental and Ecological Statistics, 25 (1), pp. 139-154. https://doi.org/10.1007/s10651-017-0396-9
We introduce a novel method to extract a sample from a finite population where units with desired characteristics are over-represented. The approach is both sequential and adaptive and allows, via suitable compositions of predictive and objective functions, to target specific subsets of the population. We consider the problem of estimation and conjecture the validity of a modified Horvitz–Thompson estimator capable to account for the imbalance induced by the targeting procedure. After discussing how to apply the method to the sampling of geographically distributed units, we investigate its potential via simulations.
pi-ps designs; Adaptive sampling; Hot deck imputation; Oversampling; Sequential methods; Spatial sampling
Online publication date: 19 Jan 2018
Environmental and Ecological Statistics: Volume 25, Issue 1
|Date accepted by journal||20/12/2017|