added Regularize to Distance.SpectralCluster

+Distance/SpectralCluster.m

@@ -20,6 +20,29 @@ end
 
 idx=kmeans(Y,k,'emptyaction','singleton','replicates',NREP);
 
+
+function [D,degenerate] = Regularize(DistanceMatrix)
+
+% turn output from NCD into well behaved  distance matrix
+
+D=DistanceMatrix;
+% b = max(max(D));
+% D=D/b; 
+for i=1:size (D,1)
+     for j= 1:size(D,2)
+         D(i,j)= max(D(i,j),D(j,i));
+     end
+     D(i,i)=0;
 end
 
+bound=D;
+for i=1: size(bound,1)
+    bound(i,i)=NaN;
+end
+a =  min(min(bound));
+if 0==a
+    degenerate=1;
+else
+    degenerate=0;
+end
     
\ No newline at end of file