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cChoosOperator.h
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1 /**
2  * @file cChoosOperator
3  * file name: cChoosOperator.h
4  * @author Betti Oesterholz
5  * @date 25.03.2010
6  * @mail webmaster@BioKom.info
7  *
8  * System: C++
9  *
10  * This header specifies a class for selecting a good operator.
11  * Copyright (C) @c GPL3 2010 Betti Oesterholz
12  *
13  * This program is free software: you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License (GPL) as
15  * published by the Free Software Foundation, either version 3 of the
16  * License, or any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21  * GNU Lesser General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program. If not, see <http://www.gnu.org/licenses/>.
25  *
26  *
27  * This header specifies a class for selecting a good operator.
28  * The selection method is weelselction.
29  * Every operator has a propability p_i of selection which, is proportional
30  * to it's fitnessvalue plus the ratio of the fitnesssum of all operations
31  * divieded by the number of operations and 1000 .
32  *
33  * minFitness = the minimum fitness (@see cOperatorFitnessAlgorithm::getMinFitness())
34  * minFitness2 = minFitness - fitnesssum / (#operations * 1000))
35  * fitnesssum2 = fitnesssum - minFitness2 * #operations
36  * p_i = (fitness_i - minFitness2) / fitnesssum2
37  *
38  * @see cOperation
39  * @see cOperatorFitnessAlgorithm
40  * @see cEnviroment
41  */
42 /*
43 History:
44 25.03.2010 Oesterholz created
45 06.06.2010 Oesterholz method getClassName() added
46 */
47 
48 
49 #ifndef ___C_CHOOS_OPERATOR_H__
50 #define ___C_CHOOS_OPERATOR_H__
51 
52 #include "version.h"
53 
54 #include "cOperation.h"
55 #include "cOperatorFitnessAlgorithm.h"
56 
57 #include <string>
58 
59 
60 namespace enviroment{
61 
62 
63 class cChoosOperator{
64 public:
65 
66  /**
67  * standardconstructor
68  */
69  cChoosOperator();
70 
71  /**
72  * Destructor of the class cChoosOperator.
73  */
74  virtual ~cChoosOperator();
75 
76  /**
77  * This method selects an operator. The selection method is weelselction.
78  * Every operator has a propability p_i of selection which, is proportional
79  * to it's fitnessvalue plus the ratio of the fitnesssum of all operations
80  * divieded by the number of operations and 1000 .
81  *
82  * minFitness = the minimum fitness (@see cOperatorFitnessAlgorithm::getMinFitness())
83  * minFitness2 = minFitness - fitnesssum / (#operations * 1000))
84  * fitnesssum2 = fitnesssum - minFitness2 * #operations
85  * p_i = (fitness_i - minFitness2) / fitnesssum2
86  *
87  * @return a pointer to the choosen operator, or NULL if non can be selected
88  * Beware: You have to delete the returned object after usage.
89  */
90  virtual cOperation * choosOperator() const;
91 
92  /**
93  * This method clones this object.
94  *
95  * @return a clone of this object
96  */
97  virtual cChoosOperator * clone() const;
98 
99  /**
100  * @return the name of this class
101  */
102  virtual std::string getClassName() const;
103 
104 
105 };//end class cChoosOperator
106 
107 
108 };//end namespace enviroment
109 
110 #endif //___C_CHOOS_OPERATOR_H__
111 
112 
113 
114 
115 
116 
117