porpotion of the positive example estimation process

[aaronlyt]

hi, i am curious about the process of estimating the porpotion of the positive example?
you got a score of 0.554. Using the log-loss formula,how can derive the porpotion of the positive example in the testing data is 0.174?

[howardyclo]

Hello, @aaronlyt :
Please refer to this blog post.