1 #ifndef __FITNESS_WSTI_H
2 #define __FITNESS_WSTI_H
14 * Just an example Fitness function based on WSTI version.
16 template <typename _Chromosome, typename _Value = double>
17 class WSTI : public Fitness<_Chromosome, _Value> {
20 * Value of the begining of the Fitness function domain
25 * Value of the end of the Fitness function domain
30 * Calculates fenotype of the current Chromosome
35 for (unsigned int i = 0; i < this->chromosome.get().size(); i++) {
36 _fenotype = _fenotype + this->chromosome.get()[i].get() * ratio;
39 // cout << "Fenotyp: " << _fenotype << "\n";
44 * Calculates fenotype of the current Chromosome
46 _Value calculateFenotype() {
47 const unsigned int power2N = 1 << this->chromosome.get().size();
48 return span_start + (span_end - span_start) * this->fenotype() / power2N;
52 * Calculates fitness value of the current Chromosome
54 _Value do_calculate() {
55 _Value fenotype = this->calculateFenotype();
56 return (exp(fenotype) * sin(3.1415 * fenotype) + 1) / fenotype;
60 * Class constructor. Initializes class with required values.
62 * @param _chromosome Chromosome, for which value will be calculated
64 WSTI(_Chromosome& _chromosome)
65 : Fitness<_Chromosome>(_chromosome) {
69 * Class constructor. Initializes class with required values.
71 * @param start begining of the Fitness function domain
72 * @param end end of the Fitness function domain
74 WSTI(float start, float end)
75 : span_start(start), span_end(end) {
79 * Class constructor. Initializes class with required values.
81 * @param _chromosome Chromosome, for which value will be calculated
82 * @param start begining of the Fitness function domain
83 * @param end end of the Fitness function domain
85 WSTI(_Chromosome& _chromosome, float start, float end)
86 : Fitness<_Chromosome>(_chromosome), span_start(start), span_end(end) {
90 * Method used to pass additional arguments needed by the function to
92 * Required map keys are:
93 * - _span_start_ - with value equal to begining of the Fitness function domain
94 * - _span_end_ - with value equal to end of the Fitness function domain
95 * Their values should be floats.
97 * @param args map containing span_start and span_end as a keys and
98 * their values (_double_) passed as strings
100 virtual void parseArguments(std::map<string, string> args) {
101 std::map<string, string>::iterator it;
102 for (it = args.begin(); it != args.end(); it++) {
103 if (it->first == "span_start") {
104 this->span_start = std::stod(it->second);
106 else if (it->first == "span_end") {
107 this->span_end = std::stod(it->second);
113 * Method used to get additional arguments needed by the function to
116 * @return map containing span_start and span_end as a map keys, with
117 * their values passed as string
119 std::map<string, string> getArguments() {
120 std::map<string, string> fit_args;
121 fit_args.insert(std::pair<string, string>("span_start", std::to_string(span_start)));
122 fit_args.insert(std::pair<string, string>("span_end", std::to_string(span_end)));
128 #endif /* __FITNESS_WSTI_H */