diff options
author | Andrej Shadura <andrewsh@debian.org> | 2019-03-09 22:30:46 +0000 |
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committer | Andrej Shadura <andrewsh@debian.org> | 2019-03-09 22:30:46 +0000 |
commit | 0a055548ae9f9d5c639bb29ca32e0fd88de37c1d (patch) | |
tree | 3bd93fd4bb0ae6025a6fcfadeb7844669fea457c /elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java | |
parent | 38212b3127e90751fb39cda34250bc11be62b76c (diff) |
Import Upstream version 0.7.1
Diffstat (limited to 'elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java')
-rw-r--r-- | elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java b/elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java new file mode 100644 index 00000000..2f592fb3 --- /dev/null +++ b/elki/src/test/java/de/lmu/ifi/dbs/elki/algorithm/clustering/kmeans/initialization/FarthestSumPointsInitialMeansTest.java @@ -0,0 +1,70 @@ +package de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.initialization; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2016 + Ludwig-Maximilians-Universität München + Lehr- und Forschungseinheit für Datenbanksysteme + ELKI Development Team + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +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.algorithm.clustering.kmeans.AbstractKMeans; +import de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.KMeans; +import de.lmu.ifi.dbs.elki.algorithm.clustering.kmeans.SingleAssignmentKMeans; +import de.lmu.ifi.dbs.elki.data.Clustering; +import de.lmu.ifi.dbs.elki.data.DoubleVector; +import de.lmu.ifi.dbs.elki.database.Database; +import de.lmu.ifi.dbs.elki.utilities.ClassGenericsUtil; +import de.lmu.ifi.dbs.elki.utilities.optionhandling.ParameterException; +import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.ListParameterization; + +/** + * Performs a single assignment with different k-means initializations. + * + * @author Erich Schubert + * @since 0.4.0 + */ +public class FarthestSumPointsInitialMeansTest extends AbstractSimpleAlgorithmTest implements JUnit4Test { + /** + * Run KMeans with fixed parameters and compare the result to a golden + * standard. + * + * @throws ParameterException + */ + @Test + public void testFarthestSumPointsInitialMeans() { + Database db = makeSimpleDatabase(UNITTEST + "different-densities-2d-no-noise.ascii", 1000); + + // Setup algorithm + ListParameterization params = new ListParameterization(); + params.addParameter(KMeans.K_ID, 5); + params.addParameter(KMeans.SEED_ID, 3); + params.addParameter(KMeans.INIT_ID, FarthestSumPointsInitialMeans.class); + AbstractKMeans<DoubleVector, ?> kmeans = ClassGenericsUtil.parameterizeOrAbort(SingleAssignmentKMeans.class, params); + testParameterizationOk(params); + + // run KMeans on database + Clustering<?> result = kmeans.run(db); + testFMeasure(db, result, 0.80399668933); + testClusterSizes(result, new int[] { 32, 169, 199, 201, 399 }); + } +}
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