test/de/lmu/ifi/dbs/elki/algorithm/outlier/TestLOF.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

package de.lmu.ifi.dbs.elki.algorithm.outlier;

import org.junit.Test;

import de.lmu.ifi.dbs.elki.JUnit4Test;
import de.lmu.ifi.dbs.elki.algorithm.AbstractSimpleAlgorithmTest;
import de.lmu.ifi.dbs.elki.data.DoubleVector;
import de.lmu.ifi.dbs.elki.database.Database;
import de.lmu.ifi.dbs.elki.distance.distancevalue.DoubleDistance;
import de.lmu.ifi.dbs.elki.result.outlier.OutlierResult;
import de.lmu.ifi.dbs.elki.utilities.ClassGenericsUtil;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.ListParameterization;

/**
 * Tests the LOF algorithm.
 * 
 * @author Lucia Cichella
 */
public class TestLOF extends AbstractSimpleAlgorithmTest implements JUnit4Test {
  @Test
  public void testLOF() {
    Database db = makeSimpleDatabase(UNITTEST + "outlier-axis-subspaces-6d.ascii", 1345);

    // Parameterization
    ListParameterization params = new ListParameterization();
    params.addParameter(LOF.K_ID, 10);

    // setup Algorithm
    LOF<DoubleVector, DoubleDistance> lof = ClassGenericsUtil.parameterizeOrAbort(LOF.class, params);
    testParameterizationOk(params);

    // run LOF on database
    OutlierResult result = lof.run(db);

    testSingleScore(result, 1293, 1.1945314199156365);
    testAUC(db, "Noise", result, 0.8921680672268908);
  }
}