MeanQuadraticWeightedKappa
                        Compute the mean quadratic weighted kappa
ScoreQuadraticWeightedKappa
                        Compute the quadratic weighted kappa
ae                      Compute the absolute error#' This function
                        computes the elementwise absolute error for a
                        number or a vector
apk                     Compute the average precision at k
auc                     Compute the area under the ROC (AUC)
ce                      Compute the classification error
ll                      Compute the log loss
logLoss                 Compute the mean log loss
mae                     Compute the mean absolute error#' This function
                        computes the mean absolte error between two
                        vectors
mapk                    Compute the mean average precision at k
mse                     Compute the mean squared error#' This function
                        computes the mean squared error between two
                        vectors
msle                    Compute the mean squared log error
rmse                    Compute the root mean squared error#' This
                        function computes the root mean squared error
                        between two vectors
rmsle                   Compute the root mean squared log error
se                      Compute the squared error
sle                     Compute the squared log error
