Package org.encog.ml.kmeans

Source Code of org.encog.ml.kmeans.TestKMeans

/*
* Encog(tm) Core v3.3 - Java Version
* http://www.heatonresearch.com/encog/
* https://github.com/encog/encog-java-core
* Copyright 2008-2014 Heaton Research, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*  
* For more information on Heaton Research copyrights, licenses
* and trademarks visit:
* http://www.heatonresearch.com/copyright
*/
package org.encog.ml.kmeans;

import junit.framework.Assert;
import junit.framework.TestCase;

import org.encog.ml.MLCluster;
import org.encog.ml.data.MLDataPair;
import org.encog.ml.data.MLDataSet;
import org.encog.ml.data.basic.BasicMLData;
import org.encog.ml.data.basic.BasicMLDataPair;
import org.encog.ml.data.basic.BasicMLDataSet;

public class TestKMeans extends TestCase {
  public static final double[][] DATA = {
        {28,15,22},
        {16,15,32},
        {32,20,44},
        {1,2,3},
        {3,2,1} };
 
    public void testCluster (){
               
        BasicMLDataSet set = new BasicMLDataSet();
       
        for(int i=0;i<DATA.length;i++)
        {
          set.add(new BasicMLData(DATA[i]));
        }

        KMeansClustering kmeans = new KMeansClustering(2,set);
        kmeans.iteration();
        //Assert.assertEquals(37, (int)kmeans.getWCSS());
                             
        int i = 1;
        for(MLCluster cluster: kmeans.getClusters())
        {
          MLDataSet ds = cluster.createDataSet();
            MLDataPair pair = BasicMLDataPair.createPair(ds.getInputSize(), ds.getIdealSize());
            ds.getRecord(0, pair);
          double t = pair.getInputArray()[0];
         
            for(int j=0;j<ds.getRecordCount();j++)
            {
              ds.getRecord(j, pair);
             
              for(j=0;j<pair.getInputArray().length;j++) {
                if(t>10) {
                  Assert.assertTrue(pair.getInputArray()[j]>10);
                } else {
                  Assert.assertTrue(pair.getInputArray()[j]<10);
                }
              }
             
            }
           
            i++;
        }      
    }

}
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