From 9d3e4f40579db3b3e7a2c5785feaea9ed16984cc Mon Sep 17 00:00:00 2001
From: Sergey Lisitsyn <blackburn91@gmail.com>
Date: Wed, 3 Aug 2011 03:28:50 +0400
Subject: [PATCH] Removed unnecessary symmetrize matrix in Isomap

---
 src/shogun/preprocessor/Isomap.cpp | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/src/shogun/preprocessor/Isomap.cpp b/src/shogun/preprocessor/Isomap.cpp
index f5b6520d055..06979ae7622 100644
--- a/src/shogun/preprocessor/Isomap.cpp
+++ b/src/shogun/preprocessor/Isomap.cpp
@@ -57,14 +57,6 @@ CCustomDistance* CIsomap::isomap_distance(CDistance* distance)
 			}
 		}
 
-		// symmetrize matrix
-		for (i=0; i<N; i++)
-		{
-			for (j=0; j<N; j++)
-				if (D_matrix.matrix[j*N+i] >= CMath::ALMOST_INFTY)
-					D_matrix.matrix[i*N+j] = D_matrix.matrix[j*N+i];
-		}			
-
 		SG_FREE(col);
 		SG_FREE(col_idx);
 	}