- 计算非概率型分布间的KL散度,首先需要将两个频率分布直方图转换为概率分布。假设这两个数据分别为
data1
和data2
,可以通过将其每个直方柱的高度除以直方图总数得到概率分布。
python import numpy as np
def histogram_to_probability(data):
bins = len(data)
total = np.sum(data)
return [i / total for i in data]
prob1 = histogram_to_probability(data1)
prob2 = histogram_to_probability(data2)
计算KL散度代码:
python from scipy.stats import entropy
kl_divergence = entropy(prob1, prob2)
print(f"KL散度为:{kl_divergence}")