GA - 1.4.5

Utilities Configuration GA
NNFW WorldSim Total 99% Experiments
realgenotype.cpp
1 /********************************************************************************
2  * FARSA Genetic Algorithm Library *
3  * Copyright (C) 2007-2009 Gianluca Massera <emmegian@yahoo.it> *
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19 
20 #include "genotypes/realgenotype.h"
21 #include "randomgenerator.h"
22 #include <cmath>
23 #include "configurationparameters.h"
24 
25 namespace farsa {
26 
27 RealGenotype::RealGenotype( unsigned int numGenes, float min, float max )
28  : DoubleGenotype( numGenes, min, max, 32 ) {
29  genes = (float*)( data );
30 }
31 
32 RealGenotype::~RealGenotype() {
33  //--- nothing to do
34 }
35 
36 RealGenotype::RealGenotype( const RealGenotype& genotype )
37  : DoubleGenotype( genotype ) {
38  genes = (float*)( data );
39 }
40 
41 RealGenotype& RealGenotype::operator=( const Genotype& genotype ) {
42  RealGenotype* genoreal = (RealGenotype*)(&genotype);
43  copyDataFrom( genoreal );
44  this->numgenes = genoreal->numgenes;
45  this->minv = genoreal->minv;
46  this->maxv = genoreal->maxv;
47  genes = (float*)( data );
48  return *this;
49 }
50 
51 void RealGenotype::configure( ConfigurationParameters& params, QString prefix ) {
52  numgenes = params.getValue( prefix + QString( "ngenes" ) ).toInt();
53  Q_ASSERT_X( numgenes > 0,
54  "RealGenotype::configure",
55  "The ngenes must be present in the config file and its value must be greater than zero" );
56  minv = params.getValue( prefix + QString( "minValue" ) ).toDouble();
57  maxv = params.getValue( prefix + QString( "maxValue" ) ).toDouble();
58  Q_ASSERT_X( minv < maxv,
59  "RealGenotype::configure",
60  "The minValue and maxValue must be different!! Check you config file" );
61  resize( numgenes*32 );
62  QString zipdata = params.getValue( prefix + QString( "data" ) );
63  if ( !zipdata.isNull() ) {
64  fromCompressedString( zipdata );
65  }
66  genes = (float*)( data );
67  QStringList valuesList = params.getValue( prefix + QString( "fitness" ) )
68  .split( QRegExp("\\s+"), QString::SkipEmptyParts );
69  if ( valuesList.size() > 0 ) {
70  // read the values of fitness
71  fitnessv.resize(0);
72  foreach( QString avalue, valuesList ) {
73  fitnessv << avalue.toDouble();
74  }
75  // safe check
76  if ( fitnessv.size() == 0 ) {
77  fitnessv.append( 0 );
78  }
79  }
80  rankv = params.getValue( prefix + QString( "rank" ) ).toDouble();
81  notesv = params.getValue( prefix + QString( "notes" ) );
82 }
83 
84 void RealGenotype::save( ConfigurationParameters& params, QString prefix ) {
85  params.createParameter( prefix, QString("type"), "RealGenotype" );
86  params.createParameter( prefix, QString("ngenes"), QString("%1").arg( numgenes ) );
87  params.createParameter( prefix, QString("minValue"), QString("%1").arg( minv ) );
88  params.createParameter( prefix, QString("maxValue"), QString("%1").arg( maxv ) );
89  QString fitstring;
90  foreach( double avalue, fitnessv ) {
91  fitstring.append( QString("%1 ").arg(avalue) );
92  }
93  params.createParameter( prefix, QString("fitness"), fitstring );
94  params.createParameter( prefix, QString("data"), toCompressedString() );
95  params.createParameter( prefix, QString("rank"), QString("%1").arg(rankv) );
96  params.createParameter( prefix, QString("notes"), notesv );
97 }
98 
99 void RealGenotype::describe( QString type ) {
100  Descriptor d = addTypeDescription( type, "RealGenotype encode a vector of real double values, each double correspond to a gene" );
101  d.describeInt( "ngenes" ).limits( 1, MaxInteger ).def( 8 ).props( IsMandatory ).help( "The number of real values represented by the Genotype" );
102  d.describeReal( "minValue" ).def( -5.0 ).help( "The minimum value representable" );
103  d.describeReal( "maxValue" ).def( +5.0 ).help( "The maximum value representable" );
104  d.describeReal( "fitness" ).props( IsList ).help( "The fitness of the Genotype", "The fitness of a Genotype support multi objective fitness; if you specify a vector of values they are considered different objectives of the fitness" );
105  d.describeString( "data" ).help( "The bits composing the Genotype stored in a compressed string" );
106  d.describeReal( "rank" ).def( 0 ).help( "The rank indicate who is more fitted that others and how much; the values are dependent on the kind of GeneticAlgo used" );
107 }
108 
109 double RealGenotype::at( unsigned int i ) const {
110  Q_ASSERT_X( (i+1)*32 <= size(),
111  "RealGenotype::at",
112  "The value requested is beyond the dimension of this Genotype" );
113  return (double) ( genes[i] );
114 }
115 
116 void RealGenotype::set( unsigned int i, double value ) {
117  Q_ASSERT_X( (i+1)*32 <= size(),
118  "RealGenotype::set",
119  "The value to be set is beyond the dimension of this Genotype" );
120  genes[i] = (float) ( value );
121  return;
122 }
123 
124 void RealGenotype::randomize() {
125  for( unsigned int i=0; i<numgenes; i++ ) {
126  genes[i] = (float)( globalRNG->getDouble( minv, maxv ) );
127  }
128 }
129 
130 RealGenotype* RealGenotype::clone() const {
131  return ( new RealGenotype( *this ) );
132 }
133 
134 } // end namespace farsa