获得徽章 0
- from math import sqrt
# python实现的威尔逊的评分
def confidence(ups, downs):
n = ups + downs
if n == 0:
return 0
z = 1.0
phat = float(ups) / n
return ((phat + z * z / (2 * n) - z * sqrt((phat * (1 - phat) + z * z / (4 * n)) / n)) / (1 + z * z / n))展开评论1
abo123456789.github.io
