1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/**
* Description: Contains a set of points.
*
* Author Create/Modi Note
* Xiaofeng Xie Mar 7, 2003
* Xiaofeng Xie May 3, 2003
* Xiaofeng Xie May 11, 2004
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Please acknowledge the author(s) if you use this code in any way.
*
* @version 1.1
* @Since MAOS1.0
*/
package net.adaptivebox.knowledge;
import net.adaptivebox.global.BasicBound;
import net.adaptivebox.global.RandomGenerator;
import net.adaptivebox.goodness.IGoodnessCompareEngine;
import net.adaptivebox.problem.ProblemEncoder;
public class Library {
private final SearchPoint[] libPoints;
private int gIndex = -1;
public Library(int number, ProblemEncoder problemEncoder) {
libPoints = new SearchPoint[number];
for (int i = 0; i < number; i++) {
libPoints[i] = problemEncoder.getEncodedSearchPoint();
}
}
public SearchPoint getGbest() {
return getSelectedPoint(gIndex);
}
public void refreshGbest(IGoodnessCompareEngine qualityComparator) {
gIndex = tournamentSelection(qualityComparator, getPopSize() - 1, true);
}
public int getPopSize() {
return libPoints.length;
}
public SearchPoint getSelectedPoint(int index) {
return libPoints[index];
}
public SearchPoint getRandomPoint() {
return libPoints[RandomGenerator.intRangeRandom(0, libPoints.length - 1)];
}
public static boolean replace(IGoodnessCompareEngine comparator, SearchPoint outPoint,
SearchPoint tobeReplacedPoint) {
boolean isBetter = false;
if (comparator.compare(outPoint.getEncodeInfo(),
tobeReplacedPoint.getEncodeInfo()) < IGoodnessCompareEngine.LARGER_THAN) {
tobeReplacedPoint.importPoint(outPoint);
isBetter = true;
}
return isBetter;
}
public int tournamentSelection(IGoodnessCompareEngine comparator, int times, boolean isBetter) {
int[] indices = RandomGenerator.randomSelection(getPopSize(), times);
int currentIndex = indices[0];
for (int i = 1; i < indices.length; i++) {
int compareValue = comparator.compare(libPoints[indices[i]].getEncodeInfo(),
libPoints[currentIndex].getEncodeInfo());
if (isBetter == (compareValue < IGoodnessCompareEngine.LARGER_THAN)) {
currentIndex = indices[i];
}
}
return currentIndex;
}
public double getExtremalVcon(boolean isMAX) {
double val = BasicBound.MINDOUBLE;
for (int i = 0; i < libPoints.length; i++) {
if (libPoints[i].getEncodeInfo()[0] > val == isMAX) {
val = libPoints[i].getEncodeInfo()[0];
}
}
return val;
}
public int getVconThanNum(double allowedCons) {
int num = 0;
for (int i = 0; i < libPoints.length; i++) {
if (libPoints[i].getEncodeInfo()[0] <= allowedCons) {
num++;
}
}
return num;
}
}
|
