diff --git a/moa/src/main/java/moa/classifiers/core/diversitytest/DiversityTest.java b/moa/src/main/java/moa/classifiers/core/diversitytest/DiversityTest.java
new file mode 100755
index 0000000..3066b6b
--- /dev/null
+++ b/moa/src/main/java/moa/classifiers/core/diversitytest/DiversityTest.java
@@ -0,0 +1,13 @@
+package moa.classifiers.core.diversitytest;
+
+import com.yahoo.labs.samoa.instances.Instance;
+import java.util.List;
+import java.util.concurrent.Callable;
+
+import moa.classifiers.Classifier;
+import moa.options.OptionHandler;
+
+public interface DiversityTest extends OptionHandler, Callable<Double> {
+	public void set(List<Instance> testChunk, List<Classifier> targetPool);
+	public boolean morePositiveMoreDiverse();
+}