multiridge (version 1.11)

Scoring: Evaluate predictions

Description

Evaluates predictions by a score suitable for the corresponding response

Usage

Scoring(lp, Y, model = NULL, score = ifelse(model == "linear", "mse", "loglik"),
  print = TRUE)

Arguments

lp

Numerical vector. Linear predictor.

Y

Response vector: numeric, binary, factor or survival.

score

Character. See Details.

model

Character. Any of c("linear", "logistic", "cox"). Is inferred from Y when NULL.

print

Boolean. Should the score be printed on screen.

Value

Numerical value.

Details

Several scores are allowed, depending on the type of output. For model = "linear", score equals any of c("loglik","mse","abserror","cor","kendall","spearman"), denoting CV-ed log-likelihood, mean-squared error, mean absolute error, Pearson (Kendall, Spearman) correlation with response. For model = "logistic", score equals any of c("loglik","auc", "brier"), denoting CV-ed log-likelihood, area-under-the-ROC-curve, and brier score a.k.a. MSE. For model = "cox", score equals any of c("loglik","cindex"), denoting CV-ed log-likelihood, and c-index.

See Also

CVscore for obtaining the cross-validated score (for given penalties), and doubleCV to obtain doubly cross-validated linear predictors to which Scoring can be applied to estimated predictive performance by double cross-validation. A full demo and data are available from: https://drive.google.com/open?id=1NUfeOtN8-KZ8A2HZzveG506nBwgW64e4