from math import log def cal_ctr(loss, pred): return (loss + log(1-pred)) / (log(1-pred) - log(pred)) def log_loss(true_label, predict_label): return - true_label * log(predict_label) - (1 - true_label) * log(1 - predict_label)
from math import log def cal_ctr(loss, pred): return (loss + log(1-pred)) / (log(1-pred) - log(pred)) def log_loss(true_label, predict_label): return - true_label * log(predict_label) - (1 - true_label) * log(1 - predict_label)