Title: R2 Measure of Explained Variation under the Additive Hazards
Description: R^2 measure of explained variation under the semiparametric additive hazards model is estimated. The measure can be used as a measure of predictive capability and therefore it can be adopted in model selection process. Rava, D. and Xu, R. (2020) <arXiv:2003.09460>.
Imports: ahaz, pracma, zoo, caTools, survival, Rdpack (>= 0.7)

Description: Multivariate optimal allocation for different domains in one and two stages stratified sample design. R2BEAT extends the Neyman (1934) <doi:10.2307/2342192> – Tschuprow (1923) allocation method to the case of several variables, adopting a generalization of the Bethel’s proposal (1989). R2BEAT develops this methodology but, moreover, it allows to determine the sample allocation in the multivariate and multi-domains case of estimates for two-stage stratified samples.
Author: Stefano Falorsi <stfalors@istat.it>, Andrea Fasulo <fasulo@istat.it>, Alessio Guandalini <alessio.guandalini@istat.it>, Daniela Pagliuca <pagliuca@istat.it>, Marco Dionisio Terribili <terribili@istat.it>

Title: Multistage Sampling Allocation and PSU Selection
Description: Multivariate optimal allocation for different domains in one and two stages stratified sample design.R2BEAT extends the Neyman (1934) – Tschuprow (1923) allocation method to the case of several variables, adopting a generalization of the Bethel’s proposal (1989). R2BEAT develops this methodology but, moreover, it allows to determine the sample allocation in the multivariate and multi-domains case of estimates for two-stage stratified samples. It also allows to perform Primary Stage Units selection. This package requires the availability of ReGenesees, that can be installed from <https://github.com/DiegoZardetto/ReGenesees>.
Depends: R (>= 3.5.0), plyr, sampling, devtools
Author: Andrea Fasulo,Giulio Barcaroli,Raffaella Cianchetta,Stefano Falorsi,Alessio Guandalini,Daniela Pagliuca,Marco Dionisio Terribili

Title: Multistage Sampling Allocation and Sample Selection
Description: Multivariate optimal allocation for different domains in one and two stages stratified sample design. R2BEAT extends the Neyman (1934) – Tschuprow (1923) allocation method to the case of several variables, adopting a generalization of the Bethel’s proposal (1989).R2BEAT develops this methodology but, moreover, it allows to determine the sample allocation in the multivariate and multi-domains case of estimates for two-stage stratified samples. It also allows to perform both Primary Stage Units and Secondary Stage Units selection. This package requires the availability of ReGenesees, that can be installed from <https://github.com/DiegoZardetto/ReGenesees>.
Depends: R (>= 3.5.0), plyr, sampling, devtools, SamplingStrata