Index: trunk/CrossPare/src/de/ugoe/cs/cpdp/dataprocessing/CLAProcessor.java
===================================================================
--- trunk/CrossPare/src/de/ugoe/cs/cpdp/dataprocessing/CLAProcessor.java	(revision 56)
+++ trunk/CrossPare/src/de/ugoe/cs/cpdp/dataprocessing/CLAProcessor.java	(revision 57)
@@ -14,4 +14,6 @@
 
 package de.ugoe.cs.cpdp.dataprocessing;
+
+import java.util.Arrays;
 
 import org.apache.commons.math3.stat.descriptive.rank.Median;
@@ -89,5 +91,5 @@
         // determine median of cluster number
         Median m = new Median();
-        double medianClusterNumber = m.evaluate(clusterNumber);
+        double medianClusterNumber = m.evaluate(Arrays.stream(clusterNumber).distinct().toArray());
 
         // finally modify the instances