001package org.cpsolver.ifs.criteria; 002 003import java.util.Set; 004 005import org.cpsolver.ifs.assignment.Assignment; 006import org.cpsolver.ifs.model.Model; 007import org.cpsolver.ifs.model.Value; 008import org.cpsolver.ifs.model.Variable; 009import org.cpsolver.ifs.util.DataProperties; 010 011 012/** 013 * Simple Criterion: Sum of {@link Value#toDouble(Assignment)}. <br> 014 * <br> 015 * This criterion only counts a sum of values (see {@link Value#toDouble(Assignment)}) of the assigned variables. 016 * It is an alternative to the default {@link Model#getTotalValue(Assignment)}. 017 * 018 * @version IFS 1.3 (Iterative Forward Search)<br> 019 * Copyright (C) 2006 - 2014 Tomáš Müller<br> 020 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 021 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 022 * <br> 023 * This library is free software; you can redistribute it and/or modify 024 * it under the terms of the GNU Lesser General Public License as 025 * published by the Free Software Foundation; either version 3 of the 026 * License, or (at your option) any later version. <br> 027 * <br> 028 * This library is distributed in the hope that it will be useful, but 029 * WITHOUT ANY WARRANTY; without even the implied warranty of 030 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 031 * Lesser General Public License for more details. <br> 032 * <br> 033 * You should have received a copy of the GNU Lesser General Public 034 * License along with this library; if not see 035 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 036 * @param <V> Variable 037 * @param <T> Value 038 */ 039public class AssignedValue<V extends Variable<V, T>, T extends Value<V, T>> extends AbstractCriterion<V, T>{ 040 041 @Override 042 public double getWeightDefault(DataProperties config) { 043 return 1.0; 044 } 045 046 @Override 047 public double getValue(Assignment<V, T> assignment, T value, Set<T> conflicts) { 048 double ret = value.toDouble(assignment); 049 if (conflicts != null) 050 for (T conflict: conflicts) 051 ret -= conflict.toDouble(assignment); 052 return ret; 053 } 054 055}