03 2022 档案

摘要：import pandas as pd import numpy as np import matplotlib.pyplot as plt def sigmoid(x): # 定义网络激活函数 return 1/(1+np.exp(-x)) data_tr = pd.read_csv(r'E:\1 阅读全文

摘要：手工搭建神经网络 import numpy as np import scipy.special import pylab import matplotlib.pyplot as plt #%% class NeuralNetwork(): # 初始化神经网络 def __init__(self, 阅读全文