R/fastCUB_package.R

In FastCUB: Fast Estimation of CUB Models via Louis' Identity

#' @title fastCUB package
#' @description 
#' The package implements Louis' identity for CUB models for rating data, to retrieve the observed information matrix 
#' within the EM algorithm. On this basis, an accelerated estimation procedure is derived and best-subset variable selection is implemented. 
#' @details 
#'   \tabular{ll}{
#' Package: \tab fastCUB\cr
#' Type: \tab Package\cr
#' Version: \tab 0.0.1\cr
#' Date: \tab 2019-03-05\cr
#' License: GPL-2 | GPL-3
#'  }
#' @references  Simone R. (2021). An accelerated EM algorithm for mixture models with uncertainty for rating data,
#'  \emph{Computational Statistics}, \bold{36}, 691-714 \cr 
#'  Louis T.A. (1982).  Finding the Observed Information Matrix when Using the EM Algorithm, 
#' \emph{Journal of the Royal Statistical Society, Series B}, \bold{44}, 226--233 \cr
#' @author  Rosaria Simone
#' @name fastCUB_package 
#' @keywords package
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