01 /*
02 * JENES
03 * A time asnd memory efficient Java library for genetic algorithms and more
04 * Copyright (C) 2011 Intelligentia srl
05 *
06 * This program is free software: you can redistribute it and/or modify
07 * it under the terms of the GNU General Public License as published by
08 * the Free Software Foundation, either version 3 of the License, or
09 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19 package jenes.tutorials.old.problem5;
20
21 import java.util.HashSet;
22 import java.util.Set;
23
24 import jenes.utils.Random;
25 import jenes.chromosome.GenericAlleleSet;
26
27 /**
28 * Tutorial illustrating the use of object-oriented chromosomes, whose
29 * allele set can be defined by the user for each gene.
30 *
31 * In this example the chromosomes are combinations of colors. We aim at finding
32 * the vector of colors closest to a given sequence.
33 *
34 * This class defines an allele set made of doubles.
35 *
36 * @author Luigi Troiano
37 * @author Pierpaolo Lombardi
38 *
39 * @version 1.0
40 * @since 1.0
41 */
42
43 public class DoubleAlleleSet extends GenericAlleleSet<Double> {
44
45 public DoubleAlleleSet(Set<Double> set) {
46 super(set);
47 }
48
49 /**
50 * Builds a DoubleAlleleSet with random values within the range [lowerBound,upperBound]
51 * <p>
52 * @param size the allala set cardinality
53 * @param lowerBound the min value to choose
54 * @param upperBound the max value to choose
55 * @return a new DoubleAlleleSet
56 */
57 public static DoubleAlleleSet createRandom(int size, double lowerBound, double upperBound ) {
58 HashSet<Double> values = new HashSet<Double>();
59 Random rand = Random.getInstance();
60
61 for( int i = 0; i < size; ++i ) {
62 values.add(rand.nextDouble(lowerBound, upperBound+Double.MIN_VALUE));
63 }
64
65 return new DoubleAlleleSet(values);
66 }
67
68 /**
69 * Builds a new DoubleAlleleSet with uniformly distributed values within the range [lowerBound,upperBound]
70 * <p>
71 * @param size the allala set cardinality
72 * @param lowerBound the min value to choose
73 * @param upperBound the max value to choose
74 * @return a new DoubleAlleleSet
75 */
76 public static DoubleAlleleSet createUniform(int size, int lowerBound, int upperBound ) {
77 HashSet<Double> values = new HashSet<Double>();
78
79 double step = 1.0/upperBound - lowerBound;
80 for( double x = lowerBound; x <= upperBound; x += step ) {
81 values.add(x);
82 }
83
84 return new DoubleAlleleSet(values);
85 }
86
87
88 }
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