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2原创 激活函数的复现and深度学习的认识
import numpy as npimport matplotlib.pyplot as pltdef sigmoid(x): return 1.0/(1+np.exp(-x))x= np.arange(-10,10)y=sigmoid(x)plt.plot(x,y)plt.axvline(0.0, color='k') #坐标轴上加一条竖直的线（0位置）plt.yti...
2019-12-03 22:59:20
190
原创 房价预测线性回归
import numpy as npimport matplotlib.pyplot as pltimport pandas as pdimport seaborn as snsfrom sklearn.datasets import load_bostonfrom sklearn.model_selection import train_test_splitfrom sklearn....
2019-11-24 13:07:48
452
原创 线性逻辑回归
线性回归import numpy as npimport matplotlib.pyplot as pltx=np.array([1.,2.,3.,4.,5.,])y = np.array([1.,3.,2.,3.,5,])plt.scatter(x,y)plt.axis([0,6,0,6])plt.show()# 房屋面积、房间数x_data = np.array( ...
2019-11-23 22:35:00
137
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