Package: SamplingStrata
Type: Package
Title: Optimal stratification of sampling frames for multipurpose
sampling surveys
Version: 1.0-2
Date: 2014-02-22
Author: Giulio Barcaroli, Daniela Pagliuca and Egon Willighagen
Maintainer: Giulio Barcaroli <barcarol@istat.it>
Description: 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.
License: GPL (>= 2)
LazyLoad: yes
Depends: R (>= 2.15.0)
Packaged: 2014-03-03 22:01:05 UTC; utente
NeedsCompilation: no
Repository: CRAN
Date/Publication: 2014-03-04 01:20:42

Package: SamplingStrata
Type: Package
Title: Optimal stratification of sampling frames for multipurpose
sampling surveys
Version: 1.0-3
Date: 2014-10-14
Author: Giulio Barcaroli, Daniela Pagliuca and Egon Willighagen
Maintainer: Giulio Barcaroli <barcarol@istat.it>
Description: 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.
License: GPL (>= 2)
LazyLoad: yes
Depends: R (>= 2.15.0)
Packaged: 2014-10-19 20:02:05 UTC; UTENTE
NeedsCompilation: no
Repository: CRAN
Date/Publication: 2014-10-21 13:34:46