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Title: Population density estimation using regression and area-to-point residual Kriging
Authors: Liu, X. H. 
Kyriakidis, Phaedon 
Goodchild, Michael F. 
Keywords: A real interpolation
Dasymetric mapping
Population surface
Issue Date: Mar-2008
Publisher: Taylor & Francis, Ltd
Source: International Journal of Geographical Information Science, Volume 22, Issue 4, pages 431-447
Abstract: Census population data are associated with several analytical and cartographic problems. Regression models using remote-sensing covariates have been examined to estimate urban population density, but the performance may not be satisfactory. This paper describes a kriging-based areal interpolation method, namely area-topoint residual kriging, which can be used to disaggregate the residuals remaining from regression. Compared with conventional cokriging, the area-to-point residual kriging is much simpler in that only a semivariogram model for the point residuals is required, as opposed to a set of auto- and cross-semivariogram models involving the dependent variable and all the covariates. In addition, area-to-point residual kriging explicitly accounts for any scale differences between source data and target values. The method is illustrated by disaggregating population from census units to the land-use zones within them. Comparative results for regression with and without area-to-point residual kriging show that area-to-point residual kriging can substantially improve interpolation accuracy.
ISSN: 1365-8816
1362-3087 (Online)
DOI: 10.1080/13658810701492225
Rights: © Informa UK Limited, an Informa Group Company
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