From a5cd1457ccbbddc57209d655b4107fcd5374a652 Mon Sep 17 00:00:00 2001
From: Ryan Curtin <ryan@ratml.org>
Date: Mon, 15 Nov 2010 19:05:48 +0000
Subject: [PATCH] Fix "translation" errors in DeflationGaussUpdate_() and fix
 spelling in comment.

---
 fastlib/branches/fastlib-stl/mlpack/fastica/fastica.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fastlib/branches/fastlib-stl/mlpack/fastica/fastica.h b/fastlib/branches/fastlib-stl/mlpack/fastica/fastica.h
index 7e30acfa94..c1ac74694d 100644
--- a/fastlib/branches/fastlib-stl/mlpack/fastica/fastica.h
+++ b/fastlib/branches/fastlib-stl/mlpack/fastica/fastica.h
@@ -324,15 +324,16 @@ class FastICA {
    * Deflation Newton-Raphson using Gaussian contrast function
    */
   void DeflationGaussUpdate_(index_t n, const arma::mat& X, arma::vec& w) {
-    arma::vec u, u_sq, u_sq_a, ex, temp1;
+    arma::vec u, u_sq, u_sq_a, ex;
 
     u = trans(X) * w;
     u_sq = pow(u, 2);
     u_sq_a = -a2_ * u_sq;
     // u is gauss
     ex = exp(u_sq_a / 2.0);
+    u = (ex % u);
     ex += (ex % u_sq_a);
-    // ex id dGauss
+    // ex is dGauss
 
     w *= -accu(ex);
     w += (X * u);