Brier score: 0.25
Brier score: 0.25
The Brier score is a measure of the accuracy of probabilistic predictions. It's calculated as the mean squared error between the predicted probability and the actual outcome (0 or 1).
A lower Brier score indicates better calibration. The score ranges from 0 (perfect prediction) to 1 (worst possible prediction).
Formula: Brier Score = (probability - actual outcome)²