--- a
+++ b/matlab_source/norm_adj.m
@@ -0,0 +1,13 @@
+function [ W ] = norm_adj( adj )
+
+degree = sum(adj');
+W = zeros(length(adj(:,1)),length(adj(1,:)));
+for i = 1:length(adj(:,1)),
+    for j = 1:length(adj(1,:)),
+        if adj(i,j) ~= 0,
+            W(i,j) = 1/degree(i);
+        end
+    end
+end
+
+end