如何在python中的deap包中创建一个具有不同范围内随机数的列表 [英] How can I create a list with random numbers in different ranges for deap package in python
问题描述
我正在使用Python中的DEAP软件包编写一个程序,专门针对遗传算法使用进化算法进行优化.
I am using DEAP package in Python to write a program for optimization with evolutionary algorithm specifically with Genetic.
我需要通过使用python中的列表类型来创建染色体.该染色体应具有五个在不同范围内的float基因(等位基因).
I need to create chromosomes by using list type in python. This chromosome should have five float genes (alleles) in different ranges.
我的主要问题是创建这样的染色体.但是,如果我可以为此使用deap包的tools.initRepeat函数会更好.
My main problem is to create such a chromosome. However, it would be better if I could use tools.initRepeat function of deap package for this.
对于所有基因都在相同范围内的情况,我们可以使用以下代码:
For the cases in which all the genes are in the same range we could use the following code:
import random
from deap import base
from deap import creator
from deap import tools
creator.create("FitnessMax", base.Fitness, weights=(1.0,))
creator.create("Individual", list, fitness=creator.FitnessMax)
IND_SIZE=10
toolbox = base.Toolbox()
toolbox.register("attr_float", random.random)
toolbox.register("individual", tools.initRepeat, creator.Individual,
toolbox.attr_float, n=IND_SIZE)
我从此处得到的
推荐答案
I found a good recommendation here.
def genFunkyInd(icls, more_params):
genome = list()
param_1 = random.uniform(...)
genome.append(param_1)
param_2 = random.randint(...)
genome.append(param_2)
# etc...
return icls(genome)
icls
(代表单个类)参数应该接收使用创建者创建的类型,而配置范围的所有其他参数可以像more_params
参数一样传递,也可以在脚本中使用定义的常量传递.这是它在工具箱中的注册方式.
The icls
(standing for individual class) parameter should receive the type created with the creator, while all other parameters configuring your ranges can be passed like the more_params
argument or with defined constants in your script. Here is how it is registered in the toolbox.
toolbox.register('individual', genFunkyInd, creator.Individual, more_params)
它为染色体手动创建一个类.我不知道这是否是最佳选择,但可以用来解决我的问题.
It manually creates a class for chromosome. I don't know if it is the best choice but it can be used to solve my problem.
这篇关于如何在python中的deap包中创建一个具有不同范围内随机数的列表的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!