@Test public void testKmeans() throws Exception {
  ClusteringTestUtils.writePointsToFile(sampleData,getTestTempFilePath("testdata/file1"),fs,conf);
  DistanceMeasure measure=new EuclideanDistanceMeasure();
  CanopyDriver.run(getConfiguration(),testdata,output,measure,3.1,2.1,false,0.0,true);
  Path kmeansOutput=new Path(output,"kmeans");
  KMeansDriver.run(testdata,new Path(output,"clusters-0-final"),kmeansOutput,0.001,10,true,0.0,true);
  int numIterations=10;
  Path clustersIn=new Path(kmeansOutput,"clusters-10-final");
  RepresentativePointsDriver.run(conf,clustersIn,new Path(kmeansOutput,"clusteredPoints"),kmeansOutput,measure,numIterations,true);
  CDbwEvaluator evaluator=new CDbwEvaluator(conf,clustersIn);
  RepresentativePointsDriver.printRepresentativePoints(kmeansOutput,numIterations);
  System.out.println("K-Means CDbw = " + evaluator.getCDbw());
  System.out.println("Intra-cluster density = " + evaluator.intraClusterDensity());
  System.out.println("Inter-cluster density = " + evaluator.interClusterDensity());
  System.out.println("Separation = " + evaluator.separation());
}