Hello World

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the information is here

class GA:
    def __init__(self, name, gender, age):
        self.name = name
        self.gender = gender
        self.age = age
    def __str__(self):
        return f"name:{name},gender:{gender},age:{age}"

from deap import base,tools,algorithms,creator
import numpy as np
# import random

IND_NUM = 30 # 30位编码，[-5,5]，精度是8位
POP_NUM = 100 # 种群总个体数量
OFS_MAX = 50 # 后代最大值

def decode(individual):
    num = int(''.join([str(i) for i in individual]),2)
    return (-5 + (10 * num)/(2**30 - 1))

def eval(individual):
    x = decode(individual)
    return ((np.square(x) + x) * np.cos(2 * x) + np.square(x) + x)


creator.create("FitnessMin",base.Fitness,weights=(-1.0,))
creator.create("Individual",list,fitness = creator.FitnessMin)

toolbox = base.Toolbox()
toolbox.register("attribute",np.random.randint,0,2)
toolbox.register("individual", tools.initRepeat, creator.Individual, toolbox.attribute, n=IND_NUM)
toolbox.register("population", tools.initRepeat, list, toolbox.individual)
pop = toolbox.population(n=100)

toolbox.register("evaluate", eval)
toolbox.register("select", tools.selTournament, 3)
toolbox.register("mate", tools.cxUniform, indpb=0.5)
toolbox.register("mutate", tools.mutFlipBit, indpb=0.5)
# tools.mutFlipBit()


stats = tools.Statistics(key=lambda x: x.fitness.values)
stats.register("avg", np.mean)
stats.register("std", np.std)
stats.register("min", np.min)
stats.register("max", np.max)

resultPop, logbook = algorithms.eaSimple(pop, toolbox, cxpb=0.5, mutpb=0.2, ngen=POP_NUM, stats=stats, verbose=False)
logbook.header = 'gen','nevals','avg','std','min','max'

print(logbook)

  pie
    title Key elements in Product X
    "Calcium" : 42.96
    "Potassium" : 50.05
    "Magnesium" : 10.01
    "Iron" :  5

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我有一个好点子
tab名字为第一个Tab
只有图标没有Tab名字
名字+icon

作者: Jerry
連結: https://butterfly.js.org/posts/4aa8abbe/
來源: Butterfly
著作權歸作者所有。商業轉載請聯繫作者獲得授權，非商業轉載請註明出處。

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