X-Git-Url: https://git.auder.net/?p=valse.git;a=blobdiff_plain;f=pkg%2FR%2FEMGLLF.R;h=57638f9709781bf89084497dd899323337e1ee4a;hp=f944f98e38ca48fcac75c73cd3ac2074551d06e9;hb=6279ba8656582370e7242ff9e77d22c23fe8ca04;hpb=ca277ac5ab51fef149014eb5e4610403fdb3227b

diff --git a/pkg/R/EMGLLF.R b/pkg/R/EMGLLF.R
index f944f98..57638f9 100644
--- a/pkg/R/EMGLLF.R
+++ b/pkg/R/EMGLLF.R
@@ -19,7 +19,8 @@
 #'   rho : parametre de variance renormalisé, calculé par l'EM
 #'   pi : parametre des proportions renormalisé, calculé par l'EM
 #'   LLF : log vraisemblance associée à cet échantillon, pour les valeurs estimées des paramètres
-#'   S : ... affec : ...
+#'   S : ...
+#'   affec : ...
 #'
 #' @export
 EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda, 
@@ -39,7 +40,7 @@ EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda,
   k <- length(piInit)  #nombre de composantes dans le mélange
   .Call("EMGLLF", phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda, 
     X, Y, eps, phi = double(p * m * k), rho = double(m * m * k), pi = double(k), 
-    LLF = double(maxi), S = double(p * m * k), affec = integer(n), n, p, m, k, 
+    llh = double(1), S = double(p * m * k), affec = integer(n), n, p, m, k, 
     PACKAGE = "valse")
 }
 
@@ -47,15 +48,20 @@ EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda,
 .EMGLLF_R <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda, 
   X, Y, eps)
 {
-  # Matrix dimensions: NOTE: phiInit *must* be an array (even if p==1)
-  n <- dim(Y)[1]
-  p <- dim(phiInit)[1]
-  m <- dim(phiInit)[2]
-  k <- dim(phiInit)[3]
+  # Matrix dimensions
+  n <- nrow(X)
+  p <- ncol(X)
+  m <- ncol(Y)
+  k <- length(piInit)
+
+  # Adjustments required when p==1 or m==1 (var.sel. or output dim 1)
+  if (p==1 || m==1)
+    phiInit <- array(phiInit, dim=c(p,m,k))
+  if (m==1)
+    rhoInit <- array(rhoInit, dim=c(m,m,k))
 
   # Outputs
-  phi <- array(NA, dim = c(p, m, k))
-  phi[1:p, , ] <- phiInit
+  phi <- phiInit
   rho <- rhoInit
   pi <- piInit
   llh <- -Inf
@@ -67,7 +73,6 @@ EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda,
   ps2 <- array(0, dim = c(p, m, k))
   X2 <- array(0, dim = c(n, p, k))
   Y2 <- array(0, dim = c(n, m, k))
-  EPS <- 1e-15
 
   for (ite in 1:maxi)
   {
@@ -155,7 +160,7 @@ EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda,
     ## E step
 
     # Precompute det(rho[,,r]) for r in 1...k
-    detRho <- sapply(1:k, function(r) det(rho[, , r]))
+    detRho <- sapply(1:k, function(r) gdet(rho[, , r]))
     sumLogLLH <- 0
     for (i in 1:n)
     {
@@ -185,5 +190,6 @@ EMGLLF <- function(phiInit, rhoInit, piInit, gamInit, mini, maxi, gamma, lambda,
       break
   }
 
-  list(phi = phi, rho = rho, pi = pi, llh = llh, S = S)
+	affec = apply(gam, 1, which.max)
+  list(phi = phi, rho = rho, pi = pi, llh = llh, S = S, affec=affec)
 }