Construction of resolvable spatial row-column designs
Date
2006
Authors
Williams, Emlyn
John, J.A.
Whitaker, D.
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Publisher
International Biometrics Society
Abstract
Resolvable row-column designs are widely used in field trials to control variation and improve the precision of treatment comparisons. Further gains can often be made by using a spatial model or a combination of spatial and incomplete blocking components. Martin, Eccleston, and Gleeson (1993, Journal of Statistical Planning and Inference34, 433-450) presented some general principles for the construction of robust spatial block designs which were addressed by spatial designs based on the linear variance (LV) model. In this article we define the two-dimensional form of the LV model and investigate extensions of the Martin et al. principles for the construction of resolvable spatial row-column designs. The computer construction of efficient spatial designs is discussed and some comparisons made with designs constructed assuming an autoregressive variance structure.
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Keywords
Keywords: maximum likelihood analysis; article; computer aided design; statistical model; Analysis of Variance; Biometry; Clinical Trials; Computer Simulation; Models, Statistical; Reproducibility of Results Average efficiency factor; Deviance; Latinized designs; Linear variance; Residual maximum likelihood; Resolvable designs; Row-column designs; Spatial designs
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Source
Biometrics
Type
Journal article
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2037-12-31
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