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some changes to start, new work on eoLottery

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This commit is contained in:
gustavo 1999-02-03 17:28:07 +00:00
commit e20fb6c7aa
4 changed files with 66 additions and 29 deletions
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5
eo/src/eo
View file

@ -42,9 +42,14 @@
#include <eoFitness.h> // what's the matter with you?
#include <eoProblem.h> // what's the matter with you?
#include <eoLottery.h>
//#include <eoGA.h>
//-----------------------------------------------------------------------------
#endif _eo_
// Local Variables:
// mode:C++
// End:

53
eo/src/eoBin.h
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@ -15,6 +15,9 @@
#include <eoUniform.h> // eoUniform
#include <eoRnd.h> // eoRnd
//-----------------------------------------------------------------------------
/// eoBin: implementation of binary chromosome.
/// based on STL's bit_vector (vector<bool>)
//-----------------------------------------------------------------------------
template <class F> class eoBin: public EO<F>, public bit_vector
@ -79,7 +82,8 @@ template<class Chrom> class eoBinRandom: public eoMonOp<Chrom>
/// The class name.
string className() const { return "eoBinRandom"; }
///
/// Randomizes a cromosome.
/// @param chrom The cromosome to be randomize.
void operator()(Chrom& chrom) const
{
eoUniform<float> uniform(0.0, 1.0);
@ -99,12 +103,13 @@ template<class Chrom> class eoBinBitFlip: public eoMonOp<Chrom>
/// The class name.
string className() const { return "eoBinBitFlip"; }
///
void eoBinBitFlip::operator()(Chrom& chrom) const
/// Change one bit.
/// @param chrom The cromosome which one bit is going to be changed.
void operator()(Chrom& chrom) const
{
eoUniform<unsigned> uniform(0, chrom.size());
unsigned pos = uniform();
chrom[pos] = !chrom[pos];
eoUniform<float> uniform(0.0, 1.0);
for (unsigned i = 0; i < chrom.size(); i++)
chrom[i] = (uniform() < 0.5) ? false : true;
}
};
@ -116,12 +121,14 @@ template<class Chrom> class eoBinMutation: public eoMonOp<Chrom>
{
public:
/// (Default) Constructor.
/// @param _rate Rate of mutation.
eoBinMutation(const double& _rate = 0.01): rate(_rate), uniform(0.0, 1.0) {}
/// The class name.
string className() const { return "eoBinMutation"; }
///
/// Mutate a chromosome.
/// @param chrom The chromosome to be mutated.
void operator()(Chrom& chrom) const
{
for (unsigned i = 0; i < chrom.size(); i++)
@ -144,7 +151,8 @@ template<class Chrom> class eoBinInversion: public eoMonOp<Chrom>
/// The class name.
string className() const { return "eoBinInversion"; }
///
/// Inverts a range of bits in a binary chromosome.
/// @param chrom The chromosome whos bits are going to be inverted (a range).
void operator()(Chrom& chrom) const
{
eoUniform<unsigned> uniform(0, chrom.size() + 1);
@ -167,7 +175,8 @@ template<class Chrom> class eoBinNext: public eoMonOp<Chrom>
/// The class name.
string className() const { return "eoBinNext"; }
///
/// Change the bit string x to be x+1.
/// @param chrom The chromosome to be added one.
void operator()(Chrom& chrom) const
{
for (int i = chrom.size() - 1; i >= 0; i--)
@ -194,7 +203,8 @@ template<class Chrom> class eoBinPrev: public eoMonOp<Chrom>
/// The class name.
string className() const { return "eoBinPrev"; }
///
/// Change the bit string x to be x-1.
/// @param chrom The chromosome to be substracted one.
void operator()(Chrom& chrom) const
{
for (int i = chrom.size() - 1; i >= 0; i--)
@ -206,11 +216,11 @@ template<class Chrom> class eoBinPrev: public eoMonOp<Chrom>
else
{
chrom[i] = 1;
continue;
continue;
}
}
};
//-----------------------------------------------------------------------------
// eoBinCrossover --> classic crossover
//-----------------------------------------------------------------------------
@ -221,6 +231,9 @@ template<class Chrom> class eoBinCrossover: public eoBinOp<Chrom>
/// The class name.
string className() const { return "eoBinCrossover"; }
/// 2-point crossover for binary chromosomes.
/// @param chrom1 The first chromosome.
/// @param chrom2 The first chromosome.
void operator()(Chrom& chrom1, Chrom& chrom2) const
{
eoUniform<unsigned> uniform(1, min(chrom1.size(), chrom2.size()));
@ -248,7 +261,9 @@ template<class Chrom> class eoBinNxOver: public eoBinOp<Chrom>
/// The class name.
string className() const { return "eoBinNxOver"; }
///
/// n-point crossover for binary chromosomes.
/// @param chrom1 The first chromosome.
/// @param chrom2 The first chromosome.
void operator()(Chrom& chrom1, Chrom& chrom2) const
{
unsigned max_size = min(chrom1.size(), chrom2.size());
@ -312,7 +327,9 @@ template<class Chrom> class eoBinGxOver: public eoBinOp<Chrom>
/// The class name
string className() const { return "eoBinGxOver"; }
///
/// Gene crossover for binary chromosomes.
/// @param chrom1 The first chromosome.
/// @param chrom2 The first chromosome.
void operator()(Chrom& chrom1, Chrom& chrom2) const
{
unsigned max_genes = min(chrom1.size(), chrom2.size()) / gene_size;
@ -353,8 +370,8 @@ template<class Chrom> class eoBinGxOver: public eoBinOp<Chrom>
template<class Chrom> class eoBinUxOver: public eoBinOp<Chrom>
{
public:
/// Constructor.
eoBinUxOver(const float _rate): rate(_rate)
/// (Default) Constructor.
eoBinUxOver(const float _rate = 0.5): rate(_rate)
{
if (rate < 0 || rate > 1)
{
@ -366,7 +383,9 @@ template<class Chrom> class eoBinUxOver: public eoBinOp<Chrom>
/// The class name.
string className() const { return "eoBinUxOver"; }
///
/// Uniform crossover for binary chromosomes.
/// @param chrom1 The first chromosome.
/// @param chrom2 The first chromosome.
void operator()(Chrom& chrom1, Chrom& chrom2) const
{
unsigned min_size = min(chrom1.size(), chrom2.size());

14
eo/src/eoFitness.h
View file

@ -11,24 +11,24 @@
class eoFitness: public eoPersistent
{
public:
virtual operator float() const = 0;
virtual bool operator<(const eoFitness& other) const = 0;
bool operator>(const eoFitness& other) const
virtual bool operator>(const eoFitness& other) const
{
return !(*this < other || *this == other);
}
bool operator==(const eoFitness& other) const
virtual bool operator==(const eoFitness& other) const
{
return !(other < *this || *this < other);
}
bool operator!=(const eoFitness& other) const
virtual bool operator!=(const eoFitness& other) const
{
return other < *this || *this < other;
}
virtual operator float() const = 0;
};
//-----------------------------------------------------------------------------

23
eo/src/eoLottery.h
View file

@ -16,15 +16,25 @@
template<class Chrom> class eoLottery: public eoSelect<Chrom>
{
public:
eoLottery(const float& rate = 1.0): eoLottery(rate) {}
void operator()(const eoPop<Chrom>& pop, eoPop<Chrom>& breeders)
/// (Default) Constructor.
eoLottery(const float& _rate = 1.0): rate(_rate) {}
///
void operator()(const eoPop<Chrom>& pop, eoPop<Chrom>& breeders) const
{
// scores of chromosomes
vector<float> score(pop.size());
// calculates accumulated scores for chromosomes
transform(pop.begin(), pop.end(), score.begin(), fitness);
for (unsigned i = 0; i < pop.size(); i++)
score[i] = pop[i].fitness();
float sum = accumulate(score.begin(), score.end(), MINFLOAT);
transform(score.begin(), score.end(), score.begin(),
bind2nd(divides<float>(), sum));
@ -32,7 +42,7 @@ template<class Chrom> class eoLottery: public eoSelect<Chrom>
// generates random numbers
vector<float> random(pop.size());
generate(random.begin(), random.end(), Uniform<float>(0,1));
generate(random.begin(), random.end(), eoUniform<float>(0,1));
sort(random.begin(), random.end(), less<float>());
// selection of chromosomes
@ -49,10 +59,13 @@ template<class Chrom> class eoLottery: public eoSelect<Chrom>
if (score_index < pop.size())
score_index++;
else
fill_n(back_insert_iterator<Pop>(breeders),
fill_n(back_insert_iterator<eoPop<Chrom> >(breeders),
num_chroms - breeders.size(), pop.back());
} while (breeders.size() < num_chroms);
}
private:
float rate; // selection rate
};
//-----------------------------------------------------------------------------