1 files changed, 12 insertions, 1 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/InverseDocumentFrequencyNormalization.java b/src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/InverseDocumentFrequencyNormalization.java
index 24f3a850..94bcb32f 100644
--- a/src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/InverseDocumentFrequencyNormalization.java
+++ b/src/de/lmu/ifi/dbs/elki/datasource/filter/normalization/InverseDocumentFrequencyNormalization.java
@@ -4,7 +4,7 @@ package de.lmu.ifi.dbs.elki.datasource.filter.normalization;
  This file is part of ELKI:
  Environment for Developing KDD-Applications Supported by Index-Structures
 
- Copyright (C) 2012
+ Copyright (C) 2013
  Ludwig-Maximilians-Universität München
  Lehr- und Forschungseinheit für Datenbanksysteme
  ELKI Development Team
@@ -32,6 +32,7 @@ import java.util.BitSet;
 import de.lmu.ifi.dbs.elki.data.SparseNumberVector;
 import de.lmu.ifi.dbs.elki.data.type.SimpleTypeInformation;
 import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
+import de.lmu.ifi.dbs.elki.logging.Logging;
 
 /**
  * Normalization for text frequency vectors, using the inverse document
@@ -45,6 +46,11 @@ import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
  */
 public class InverseDocumentFrequencyNormalization<V extends SparseNumberVector<?>> extends AbstractNormalization<V> {
   /**
+   * Class logger.
+   */
+  private static final Logging LOG = Logging.getLogger(InverseDocumentFrequencyNormalization.class);
+
+  /**
    * The IDF storage.
    */
   TIntDoubleMap idf = new TIntDoubleHashMap();
@@ -116,4 +122,9 @@ public class InverseDocumentFrequencyNormalization<V extends SparseNumberVector<
   protected SimpleTypeInformation<? super V> getInputTypeRestriction() {
     return TypeUtil.SPARSE_VECTOR_FIELD;
   }
+
+  @Override
+  protected Logging getLogger() {
+    return LOG;
+  }
 }
 \ No newline at end of file