Compute the multinominal Brier score
brierScore(x, classLabels, actual = "actual")
data.frame
, rows are predictions/observations, columns contain classes
vector of predicted class labels (probabilities), corrosponding to column names in x
name of column containing the observed class
A single numeric value.
Brier, GLenn W. 1950. "Verification of Forecasts Expressed in Terms of Probability." Monthly Weather Review 78 (1): 1-3. doi:10.1175/1520-0493(1950)078<0001:VOFEIT>2.0.CO;2.