AIC Akaike's Information Criterion, see ?stats::AIC
AICc Second-order (or small sample) AIC with a correction for small sample sizes
BIC Bayesian Information Criterion, see ?stats::BIC
R2 r-squared value, see r2()
R2_adj adjusted r-squared, see r2()
RMSE root mean squared error, see performance_rmse()
SIGMA residual standard deviation, see insight::get_sigma()
LOGLOSS Log-loss, see performance_logloss()
SCORE_LOG score of logarithmic proper scoring rule, see performance_score()
SCORE_SPHERICAL score of spherical proper scoring rule, see performance_score()
PCP percentage of correct predictions, see performance_pcp()