1 files changed, 59 insertions, 0 deletions
diff --git a/src/de/lmu/ifi/dbs/elki/evaluation/scores/adapter/DBIDsTest.java b/src/de/lmu/ifi/dbs/elki/evaluation/scores/adapter/DBIDsTest.java
new file mode 100644
index 00000000..d41c7af4
--- /dev/null
+++ b/src/de/lmu/ifi/dbs/elki/evaluation/scores/adapter/DBIDsTest.java
@@ -0,0 +1,59 @@
+package de.lmu.ifi.dbs.elki.evaluation.scores.adapter;
+/*
+ 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.database.ids.DBIDs;
+import de.lmu.ifi.dbs.elki.evaluation.scores.ScoreEvaluation.Predicate;
+
+/**
+ * Test predicate using a DBID set as positive elements.
+ * 
+ * @apiviz.composedOf DBIDs
+ *
+ * @author Erich Schubert
+ */
+public class DBIDsTest implements Predicate<DBIDRefIter> {
+  /**
+   * DBID set.
+   */
+  private DBIDs set;
+
+  /**
+   * Constructor.
+   * 
+   * @param set Set of positive objects
+   */
+  public DBIDsTest(DBIDs set) {
+    this.set = set;
+  }
+
+  @Override
+  public boolean test(DBIDRefIter o) {
+    return set.contains(o.getRef());
+  }
+
+  @Override
+  public int numPositive() {
+    return set.size();
+  }
+}
+\ No newline at end of file