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Geostatistical Smoothing of Areal Data: Mapping Employment Density with Factorial Kriging.

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Abstract:

This article summarizes area‐to‐point (ATP) factorial kriging that allows the smoothing of aggregate, areal data into a continuous spatial surface. Unlike some other smoothing methods, ATP factorial kriging does not suppose that all of the data within an area are located at a centroid or other arbitrary point. Also, unlike some other smoothing methods, factorial kriging allows the user to utilize an autocovariance function to control the smoothness of the output. This is beneficial because the covariance function is a physically meaningful statement of spatial relationship, which is not the case when other spatial kernel functions are used for smoothing. Given a known covariance function, factorial kriging gives the smooth surface that is best in terms of minimizing the expected mean squared prediction error. I present an application of the factorial kriging methodology for visualizing the structure of employment density in the Denver metropolitan area.

Language: English

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1538-4632.2009.00784.x

Affiliations: Department of Geography, University of Tennessee, Knoxville, TN

Publication date: January 1, 2010

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