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/*******************************************************************************
 * Copyright (c) 2010 Haifeng Li
 *   
 * Licensed 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 smile.gap;

/**
 * Artificial chromosomes used in Lamarckian algorithm that is a hybrid of
 * of evolutionary computation and a local improver such as hill-climbing.
 * Lamarckian algorithm augments an EA with some
 * hill-climbing during the fitness assessment phase to revise each individual
 * as it is being assessed. The revised individual replaces the original one
 * in the population.
 *
 * @author Haifeng Li
 */
public interface LamarckianChromosome extends Chromosome {
    /**
     * Performs a step of (hill-climbing) local search to evolve this chromosome.
     */
    public void evolve();
}