def update_position(self,seq): swap.apply_swap_sequence(np.copy(self.pos),seq)
def update_position(self, seq):
swap.apply_swap_sequence(np.copy(self.pos), seq)
# Particle.gbest=np.copy(child) # gbest_fit=fit_val # flag=0 #if fitness of child is higher than pbest,update pbest #if fit_val<pop[i].pbest_fit: # pop[i].pbest=np.copy(child) # pop[i].pbest_fit=fit_val #calculate new velocity,update position seq1=swap.get_swap_sequence(pop[i].pbest,np.copy(pop[i].pos)) seq2=swap.get_swap_sequence(Particle.gbest,np.copy(pop[i].pos)) new_vel=pop[i].update_velocity(seq1,seq2,k) #new_vel=np.random.permutation(new_vel) #new_pos=pop[i].update_position(new_vel) new_pos=swap.apply_swap_sequence(np.copy(pop[i].pos),new_vel) #print new_vel #print pop[i].pos #print new_pos #pop[i].pos=swap.apply_swap_sequence(new_pos,pop[i].pos) pop[i].vel=swap.get_swap_sequence(new_pos,np.copy(pop[i].pos)) pop[i].pos=np.copy(new_pos) pop[i].fitness=pop[i].get_fitness(cost) if(k%5==0): randno=random.uniform(0,1) if(randno>=0.5): idx1=random.randrange(0,cities) idx2=random.randrange(0,cities)
# Particle.gbest=np.copy(child)
# gbest_fit=fit_val
# flag=0
#if fitness of child is higher than pbest,update pbest
#if fit_val<pop[i].pbest_fit:
# pop[i].pbest=np.copy(child)
# pop[i].pbest_fit=fit_val
#calculate new velocity,update position
seq1 = swap.get_swap_sequence(pop[i].pbest, np.copy(pop[i].pos))
seq2 = swap.get_swap_sequence(Particle.gbest, np.copy(pop[i].pos))
new_vel = pop[i].update_velocity(seq1, seq2, k)
#new_vel=np.random.permutation(new_vel)
#new_pos=pop[i].update_position(new_vel)
new_pos = swap.apply_swap_sequence(np.copy(pop[i].pos), new_vel)
#print new_vel
#print pop[i].pos
#print new_pos
#pop[i].pos=swap.apply_swap_sequence(new_pos,pop[i].pos)
pop[i].vel = swap.get_swap_sequence(new_pos, np.copy(pop[i].pos))
pop[i].pos = np.copy(new_pos)
pop[i].fitness = pop[i].get_fitness(cost)
if (k % 5 == 0):
randno = random.uniform(0, 1)
if (randno >= 0.5):
idx1 = random.randrange(0, cities)
idx2 = random.randrange(0, cities)
temp_val = pop[i].pos[idx1]
pop[i].pos[idx1] = pop[i].pos[idx2]
