SamplingStrata (1.0-1)
Optimal stratification of sampling frames for multipurpose sampling surveys.
http://cran.r-project.org/web/packages/SamplingStrata
In the field of stratified sampling design, this package offers an approach for the determination of the best stratification of a sampling frame, the one that ensures the minimum sample cost under the condition to satisfy precision constraints in a multivariate and multidomain case. This approach is based on the use of the genetic algorithm: each solution (i.e. a particular partition in strata of the sampling frame) is considered as an individual in a population; the fitness of all individuals is evaluated applying the Bethel-Chromy algorithm to calculate the sampling size satisfying precision constraints on the target estimates. Functions in the package allows to: (a) analyse the obtained results of the optimisation step; (b) assign the new strata labels to the sampling frame; (c) select a sample from the new frame accordingly to the best allocation. Functions for the execution of the genetic algorithm are a modified version of the functions in the 'genalg' package.
Maintainer:
Giulio Barcaroli
Author(s): Giulio Barcaroli, Daniela Pagliuca and Egon Willighagen
License: GPL (>= 2)
Uses: Does not use any package
Released 4 months ago.
5 previous versions
- SamplingStrata_1.0. Released 6 months ago.
- SamplingStrata_0.9-3. Released 12 months ago.
- SamplingStrata_0.9-2. Released over 1 year ago.
- SamplingStrata_0.9-1. Released almost 2 years ago.
- SamplingStrata_0.9. Released about 2 years ago.
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