julia现一个,遗传算法程序。
时间: 2024-05-04 07:15:49 浏览: 16
您好,这是一个关于遗传算法的Julia程序:
```julia
using Random
function create_population(population_size, chromosome_length)
population = []
for i in 1:population_size
chromosome = []
for j in 1:chromosome_length
push!(chromosome, rand(Bool))
end
push!(population, chromosome)
end
return population
end
function fitness(chromosome)
return sum(chromosome)
end
function select_parents(population, fitness_values)
parent1 = population[rand(1:length(population))]
parent2 = population[rand(1:length(population))]
if fitness(parent1) > fitness(parent2)
return parent1, parent2
else
return parent2, parent1
end
end
function crossover(parent1, parent2)
child1 = copy(parent1)
child2 = copy(parent2)
crossover_point = rand(2:length(parent1)-1)
for i in crossover_point:length(parent1)
child1[i], child2[i] = child2[i], child1[i]
end
return child1, child2
end
function mutate(chromosome, mutation_rate)
for i in 1:length(chromosome)
if rand() < mutation_rate
chromosome[i] = !chromosome[i]
end
end
return chromosome
end
function genetic_algorithm(population_size, chromosome_length, generations, mutation_rate)
population = create_population(population_size, chromosome_length)
best_fitness = 0
for i in 1:generations
fitness_values = [fitness(chromosome) for chromosome in population]
parents = select_parents(population, fitness_values)
children = crossover(parents[1], parents[2])
population = [parents[1], parents[2], children[1], children[2]]
for j in 1:length(population)
population[j] = mutate(population[j], mutation_rate)
end
fitness_values = [fitness(chromosome) for chromosome in population]
best_individual = population[argmax(fitness_values)]
best_individual_fitness = fitness(best_individual)
if best_individual_fitness > best_fitness
best_fitness = best_individual_fitness
end
end
return best_fitness
end
```
希望对您有帮助!
相关推荐
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)
![](https://csdnimg.cn/download_wenku/file_type_ask_c1.png)