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# cobiclust R package
# Copyright INRA 2017
# UMR MIA-Paris, AgroParisTech, INRA, Universite Paris-Saclay, 75005, Paris, France
####################################################################################
#' Calculate selection criteria.
#'
#' @param x The output of the cobiclust function.
#' @param K The number of groups in rows.
#' @param G The number of groups in columns.
#' @return A dataframe with 7 columns.
#' \describe{
#' \item{\code{vICL}}{the vICL selection criterion.}
#' \item{\code{BIC}}{the BIC selection criterion.}
#' \item{\code{penKG}}{the value of the BIC penalty.}
#' \item{\code{lb}}{the value of the lower bound of the log-likelihood.}
#' \item{\code{entZW}}{the value of the entropy of the latent variables Z and W.}
#' \item{\code{K}}{the number of groups in rows.}
#' \item{\code{G}}{the number of groups in columns.}
#' }
#' @export
selection_criteria <-
function(x, K, G){
K <- x$K
G <- x$G
lb <- x$info$lb
penKG <- penalty(x)
BIC <- lb - penKG
ent_ZW <- x$info$ent_ZW
vICL <- BIC - ent_ZW
a_tilde <- x$info$a_tilde
return(cbind(vICL = vICL, BIC = BIC, penKG = penKG, lb = lb, entZW = ent_ZW, K = K, G = G))
}
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