Chromosome* Chromosome::ArithmeticCrossoverWithChromosome(Chromosome* Mutator)
{
//srand( (unsigned)time(0) ); srand should have been called already
bool bAnd = (rand() &1);
//0 doesn't really matter, updating weights anyway
Chromosome* ret = new Chromosome(0);
if (bAnd)
{
for (int i = 0; i < NUM_EVALNODES; i++)
{
int newWeighting = (Weightings[i] & Mutator->GetWeighting(i));
ret->SetWeighting(i, newWeighting);
}
}
else {
for (int i = 0; i < NUM_EVALNODES; i++)
{
int newWeighting = (Weightings[i] | Mutator->GetWeighting(i));
ret->SetWeighting(i, newWeighting);
}
}
return ret;
}
Chromosome* Chromosome::MultiplePointCrossoverWithChromosome(Chromosome* Mutator)
{
//srand( (unsigned)time(0) ); srand should have been called already
Chromosome* ret = new Chromosome(10); // NEED NUM HERE
for (int i = 0; i < NUM_EVALNODES; i++)
{
//In single point crossover, we select a random point
//Before the random point, take from A, take rest from B
int random_integer1 = (rand() %10); //32 bit integer
int random_integer2 = (rand() %10);
while (random_integer1 == random_integer2)
random_integer2 = (rand() % 10);
int mask = 1;
//if (random_integer1 > random_integer2)
{
for (int j = 0 ; j < abs(random_integer1-random_integer2); j++)
{
mask = mask<<1;
mask |= 1;
}
int nextShift = ((random_integer2 > random_integer1) ? random_integer1 : random_integer2);
mask = mask << nextShift;
}
int newWeighting = (Weightings[i]&mask) | (Mutator->GetWeighting(i)& ~mask);
ret->SetWeighting(i, newWeighting);
}
return ret;
}
Chromosome* Chromosome::SinglePointCrossoverWithChromosome(Chromosome* Mutator)
{
//srand( (unsigned)time(0) ); srand should have been called already
Chromosome* ret = new Chromosome(10); // NEED NUM HERE
for (int i = 0; i < NUM_EVALNODES; i++)
{
//In single point crossover, we select a random point
//Before the random point, take from A, take rest from B
int random_integer = (rand() %10); //32 bit integer
int mask = 1;
for (int j = 0 ; j < random_integer; j++)
{
mask = mask<<1;
mask |= 1;
}
int newWeighting = (Weightings[i]&mask) | (Mutator->GetWeighting(i)& ~mask);
ret->SetWeighting(i, newWeighting);
}
return ret;
}
Chromosome* Chromosome::UniformPointCrossoverWithChromosome(Chromosome* Mutator)
{
Chromosome* ret = new Chromosome(10);
for (int i = 0 ;i < NUM_EVALNODES; i++)
{
int Weighting = 0;
int currMutatorWeighting = Mutator->GetWeighting(i);
for (int j = 0; j < 32; j++) //32 bits in an int
{
int mask = 1 << j;
bool bOne = (rand() &1);
if (bOne)
{
Weighting |= mask & Weightings[i];
}
else {
Weighting |= mask & currMutatorWeighting;
}
}
ret->SetWeighting(i, Weighting);
}
return ret;
}
