qq_43613793的博客

Sigmoid函数:y=11+e−zy=\frac{1}{1+e^{-z}}y=1+e−z1​import numpy as npimport pandas as pdimport matplotlib.pyplot as pltfrom scipy.stats import logisticfig=plt.figure(figsize=(12,8))ax=fig.add_subplot(111)z=np.linspace(-6,6,10000)ax.plot(z,logistic.cdf

导入所需的包以及创建数据:import numpy as npimport pandas as pdimport matplotlib.pyplot as pltfrom sklearn.linear_model import LinearRegressionfrom sklearn.metrics import r2_scoreimport statsmodels.api as smimport statsmodels.graphics.api as smgfrom sklearn.pre