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diff --git a/src/de/lmu/ifi/dbs/elki/data/model/DendrogramModel.java b/src/de/lmu/ifi/dbs/elki/data/model/DendrogramModel.java
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+++ b/src/de/lmu/ifi/dbs/elki/data/model/DendrogramModel.java
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+package de.lmu.ifi.dbs.elki.data.model;
+/*
+This file is part of ELKI:
+Environment for Developing KDD-Applications Supported by Index-Structures
+
+Copyright (C) 2011
+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.distance.distancevalue.Distance;
+import de.lmu.ifi.dbs.elki.result.textwriter.TextWriteable;
+import de.lmu.ifi.dbs.elki.result.textwriter.TextWriterStream;
+
+/**
+ * Model for dendrograms, provides the distance to the child cluster.
+ * 
+ * @author Elke Achtert
+ */
+// TODO: comments
+public class DendrogramModel<D extends Distance<D>> extends BaseModel {
+
+  private D distance;
+
+  public DendrogramModel(D distance) {
+    super();
+    this.distance = distance;
+  }
+
+  /**
+   * @return the distance
+   */
+  public D getDistance() {
+    return distance;
+  }
+
+  /**
+   * Implementation of {@link TextWriteable} interface.
+   */
+  @Override
+  public void writeToText(TextWriterStream out, String label) {
+    super.writeToText(out, label);
+    out.commentPrintLn("Distance to children: " + (distance != null ? distance.toString() : "null"));
+  }
+
+  @Override
+  public String toString() {
+    return "Distance to children: " + (distance != null ? distance.toString() : "null");
+  }
+}