essai fusion

[valse.git] / pkg / R / constructionModelesLassoMLE.R

diff --git a/pkg/R/constructionModelesLassoMLE.R b/pkg/R/constructionModelesLassoMLE.R
deleted file mode 100644 (file)
index ac54319..0000000
--- a/pkg/R/constructionModelesLassoMLE.R
+++ /dev/null
@@ -1,79 +0,0 @@
-#' constructionModelesLassoMLE
-#'
-#' Construct a collection of models with the Lasso-MLE procedure.
-#' 
-#'
-#' @param ...
-#'
-#' @return ...
-#'
-#' export
-constructionModelesLassoMLE = function(phiInit, rhoInit, piInit, gamInit, mini, maxi,
-       gamma, X, Y, thresh, tau, S, ncores=3, fast=TRUE, verbose=FALSE)
-{
-       if (ncores > 1)
-       {
-               cl = parallel::makeCluster(ncores, outfile='')
-               parallel::clusterExport( cl, envir=environment(),
-                       varlist=c("phiInit","rhoInit","gamInit","mini","maxi","gamma","X","Y","thresh",
-                       "tau","S","ncores","verbose") )
-       }
-
-       # Individual model computation
-       computeAtLambda <- function(lambda)
-       {
-               if (ncores > 1)
-                       require("valse") #nodes start with an empty environment
-
-               if (verbose)
-                       print(paste("Computations for lambda=",lambda))
-
-               n = dim(X)[1]
-               p = dim(phiInit)[1]
-               m = dim(phiInit)[2]
-               k = dim(phiInit)[3]
-               sel.lambda = S[[lambda]]$selected
-#              col.sel = which(colSums(sel.lambda)!=0) #if boolean matrix
-               col.sel <- which( sapply(sel.lambda,length) > 0 ) #if list of selected vars
-               if (length(col.sel) == 0)
-                       return (NULL)
-
-               # lambda == 0 because we compute the EMV: no penalization here
-               res = EMGLLF(phiInit[col.sel,,],rhoInit,piInit,gamInit,mini,maxi,gamma,0,
-                       X[,col.sel], Y, tau, fast)
-               
-               # Eval dimension from the result + selected
-               phiLambda2 = res$phi
-               rhoLambda = res$rho
-               piLambda = res$pi
-               phiLambda = array(0, dim = c(p,m,k))
-               for (j in seq_along(col.sel))
-                       phiLambda[col.sel[j],sel.lambda[[j]],] = phiLambda2[j,sel.lambda[[j]],]
-               dimension = length(unlist(sel.lambda))
-
-               # Computation of the loglikelihood
-               densite = vector("double",n)
-               for (r in 1:k)
-               {
-                 if (length(col.sel)==1){
-                   delta = (Y%*%rhoLambda[,,r] - (X[, col.sel]%*%t(phiLambda[col.sel,,r])))
-                 } else delta = (Y%*%rhoLambda[,,r] - (X[, col.sel]%*%phiLambda[col.sel,,r]))
-                       densite = densite + piLambda[r] *
-                               det(rhoLambda[,,r])/(sqrt(2*base::pi))^m * exp(-diag(tcrossprod(delta))/2.0)
-               }
-               llhLambda = c( sum(log(densite)), (dimension+m+1)*k-1 )
-               list("phi"= phiLambda, "rho"= rhoLambda, "pi"= piLambda, "llh" = llhLambda)
-       }
-
-       # For each lambda, computation of the parameters
-       out =
-               if (ncores > 1)
-                       parLapply(cl, 1:length(S), computeAtLambda)
-               else
-                       lapply(1:length(S), computeAtLambda)
-
-       if (ncores > 1)
-               parallel::stopCluster(cl)
-
-       out
-}