Created
August 18, 2017 01:12
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ベルヌーイ分布
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#coding: utf-8 | |
import numpy as np | |
import matplotlib.pyplot as plt | |
import matplotlib.mlab as mlab | |
def bern(x,p): | |
return pow(p,x) * pow(1-p,1-x) | |
if __name__ == "__main__": | |
dist = np.zeros(2) | |
for i in range(1,10): | |
plt.figure() | |
p = 0.1 * i | |
dist[0] = bern(0,p) | |
dist[1] = bern(1,p) | |
x = np.array([0,1]) | |
label = ["x = 0","x = 1"] | |
plt.ylim([0.0,1.0]) | |
plt.title("bernoulli distribution (p = " + str(p) + ")") | |
plt.bar(x,dist,tick_label = label,align = "center") | |
plt.savefig("bernoulli_" + str(p) + ".png") |
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