gencve (version 0.3)

logloss: log-loss function for multiclass prediction

Description

Cross entropy or logloss is computed.

Usage

logloss(y, yp)

Arguments

y

vector of test cases

yp

corresonding vector of predictions

Value

the log-loss

References

Log loss is used in Kaggle competitions.

See Also

misclassificationrate

Examples

#logloss for perfect fit
t <- ifelse(runif(50)<0.5, "a", "b")
logloss(y=t, yp=t)