def evolve(self): """ Takes the best genes and creates a new genome for the next generation """ # Create 20 mutations of each of the 2 best chromosomes i = self.population-1 nextGenChromosomesA = [] nextGenChromosomesB = [] while i >= 0: AChrom = Chromosome() BChrom = Chromosome() AChrom.genes = matrixEvolution.mutateMatrix(self.bestChromosomes[0].genes,self.mutationRate,self.mutationRange) BChrom.genes = matrixEvolution.mutateMatrix(self.bestChromosomes[1].genes,self.mutationRate,self.mutationRange) nextGenChromosomesA.append(AChrom) nextGenChromosomesB.append(BChrom) i -= 1 #combine the two groups to form the next generation genome nextGenChromos = [] for i in range(len(nextGenChromosomesA)): chrom = Chromosome() chrom.genes = matrixEvolution.mixMatrix(nextGenChromosomesA[i].genes,nextGenChromosomesB[i].genes) nextGenChromos.append(chrom) self.chromosomes = nextGenChromos self.generation += 1
def evolve(self):
""" Takes the best genes and creates a new genome for the next generation
"""
#print self.chromosomes[0].strength, self.chromosomes[1].strength
bestChrom1=self.chromosomes[0]
bestChrom2=self.chromosomes[1]
for chrom in self.chromosomes[2:]:
if chrom.strength > bestChrom1.strength:
#print 'strength1',chrom.strength
bestChrom1=chrom
elif chrom.strength > bestChrom2.strength:
#print 'strength 2',chrom.strength
bestChrom2=chrom
self.bestChromosomes=[bestChrom1,bestChrom2]
# Create 20 mutations of each of the 2 best chromosomes
i = self.population-3
nextGenChromosomesA = []
nextGenChromosomesB = []
while i >= 0:
AChrom = Chromosome(500)
BChrom = Chromosome(500)
AChrom.genes = matrixEvolution.mutateMatrix(self.bestChromosomes[0].genes,self.mutationRate,self.mutationRange)
BChrom.genes = matrixEvolution.mutateMatrix(self.bestChromosomes[1].genes,self.mutationRate,self.mutationRange)
nextGenChromosomesA.append(AChrom)
nextGenChromosomesB.append(BChrom)
i -= 1
self.generation += 1
#combine the two groups to form the next generation genome
nextGenChromos = [bestChrom1,bestChrom2]
for i in range(len(nextGenChromosomesA)):
chrom = Chromosome(i+2)
chrom.identification[0] = self.generation
chrom.genes = matrixEvolution.mixMatrix(nextGenChromosomesA[i].genes,nextGenChromosomesB[i].genes)
nextGenChromos.append(chrom)
#print nextGenChromos[0].strength, nextGenChromos[1].strength
self.chromosomes = nextGenChromos