1 files changed, 36 insertions, 0 deletions
diff --git a/src/main/java/org/apache/commons/math3/genetics/SelectionPolicy.java b/src/main/java/org/apache/commons/math3/genetics/SelectionPolicy.java
new file mode 100644
index 0000000..c19c922
--- /dev/null
+++ b/src/main/java/org/apache/commons/math3/genetics/SelectionPolicy.java
@@ -0,0 +1,36 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.math3.genetics;
+
+import org.apache.commons.math3.exception.MathIllegalArgumentException;
+
+/**
+ * Algorithm used to select a chromosome pair from a population.
+ *
+ * @since 2.0
+ */
+public interface SelectionPolicy {
+    /**
+     * Select two chromosomes from the population.
+     *
+     * @param population the population from which the chromosomes are choosen.
+     * @return the selected chromosomes.
+     * @throws MathIllegalArgumentException if the population is not compatible with this {@link
+     *     SelectionPolicy}
+     */
+    ChromosomePair select(Population population) throws MathIllegalArgumentException;
+}