/*
* Encog(tm) Examples v3.0 - Java Version
* http://www.heatonresearch.com/encog/
* http://code.google.com/p/encog-java/
* Copyright 2008-2011 Heaton Research, Inc.
*
* 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.
*
* For more information on Heaton Research copyrights, licenses
* and trademarks visit:
* http://www.heatonresearch.com/copyright
*/
package org.encog.examples.nonlinear.tsp.genetic;
import org.encog.examples.nonlinear.tsp.City;
import org.encog.ml.genetic.genome.CalculateGenomeScore;
import org.encog.ml.genetic.genome.Genome;
public class TSPScore implements CalculateGenomeScore {
private City[] cities;
public TSPScore(City[] cities)
{
this.cities = cities;
}
@Override
public double calculateScore(Genome genome) {
double result = 0.0;
int[] path = (int[])genome.getOrganism();
for (int i = 0; i < cities.length - 1; i++) {
City city1 = cities[path[i]];
City city2 = cities[path[i+1]];
final double dist = city1.proximity(city2);
result += dist;
}
return result;
}
public boolean shouldMinimize() {
return true;
}
}