Last active
December 21, 2015 00:19
-
-
Save bulv1ne/6219360 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| from math import sqrt | |
| def score(phat, n, z=1.0): | |
| #z 1.0 = 85%, 1.6 = 95% | |
| return ((phat + z*z/(2*n) - z * sqrt((phat*(1-phat)+z*z/(4*n))/n))/(1+z*z/n)) | |
| def confidence(ups, downs): | |
| n = ups + downs | |
| if n == 0: | |
| return 0 | |
| phat = float(ups) / n | |
| return wilson_score(phat, n) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment