SamplingStrata (1.0) is now available on CRAN. Package "SamplingStrata" permits the determination of the best stratification of a sampling frame, the one that ensures the sample of minimum cost, under the condition to satisfy precision constraints in a multivariate and multidomain case.
This new version of the package offer two new functions: - "evalSolution", to evaluate the found solution in terms of expected target variables precision and bias obtainable by samples drawn from the otpimized frame; - "tuneParameters", to determine the best combination of values to assign to the parameters necessary for the execution of the genetic algorithm used for the optimization of the frame stratification. An overview of the way this package can be used in practice is contained in the vignette "Optimization of sampling strata with the SamplingStrata package" available on the website. A focus on the use of the "tuneParameters" function is in the vignette "tuneParameters.pdf" contained in the \inst\doc folder. <http://cran.r-project.org/web/packages/SamplingStrata/vignettes/SamplingStrataVignette.pdf> -- Giulio Barcaroli Servizio Metodologie, Strumenti e Supporto metodologico Dipartimento Integrazione, Qualità e Reti Istituto Nazionale di Statistica [[alternative HTML version deleted]]
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