1 files changed, 78 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/evaluation/classification/holdout/RandomizedHoldout.java b/src/de/lmu/ifi/dbs/elki/evaluation/classification/holdout/RandomizedHoldout.java
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+++ b/src/de/lmu/ifi/dbs/elki/evaluation/classification/holdout/RandomizedHoldout.java
@@ -0,0 +1,78 @@
+package de.lmu.ifi.dbs.elki.evaluation.classification.holdout;
+
+/*
+ This file is part of ELKI:
+ Environment for Developing KDD-Applications Supported by Index-Structures
+
+ Copyright (C) 2014
+ 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 de.lmu.ifi.dbs.elki.math.random.RandomFactory;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.AbstractParameterizer;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.OptionID;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
+import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.RandomParameter;
+
+/**
+ * A holdout providing a seed for randomized operations.
+ * 
+ * @author Arthur Zimek
+ */
+public abstract class RandomizedHoldout extends AbstractHoldout {
+  /**
+   * The random generator.
+   */
+  protected RandomFactory random;
+
+  /**
+   * Sets the parameter seed to the parameterToDescription map.
+   */
+  public RandomizedHoldout(RandomFactory random) {
+    super();
+    this.random = random;
+  }
+
+  /**
+   * Parameterization class
+   * 
+   * @author Erich Schubert
+   * 
+   * @apiviz.exclude
+   */
+  public static abstract class Parameterizer extends AbstractParameterizer {
+    /**
+     * Random seeding for holdout evaluation.
+     */
+    public static final OptionID SEED_ID = new OptionID("holdout.seed", "Random generator seed for holdout evaluation.");
+
+    /**
+     * The random generator.
+     */
+    protected RandomFactory random;
+
+    @Override
+    protected void makeOptions(Parameterization config) {
+      super.makeOptions(config);
+      RandomParameter seedP = new RandomParameter(SEED_ID);
+      if(config.grab(seedP)) {
+        random = seedP.getValue();
+      }
+    }
+  }
+}
+\ No newline at end of file