1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.math4.legacy.genetics;
18
19 import org.apache.commons.math4.legacy.exception.MathIllegalArgumentException;
20
21 /**
22 * Policy used to create a pair of new chromosomes by performing a crossover
23 * operation on a source pair of chromosomes.
24 *
25 * @since 2.0
26 */
27 public interface CrossoverPolicy {
28
29 /**
30 * Perform a crossover operation on the given chromosomes.
31 *
32 * @param first the first chromosome.
33 * @param second the second chromosome.
34 * @return the pair of new chromosomes that resulted from the crossover.
35 * @throws MathIllegalArgumentException if the given chromosomes are not compatible with this {@link CrossoverPolicy}
36 */
37 ChromosomePair crossover(Chromosome first, Chromosome second) throws MathIllegalArgumentException;
38 }