#' agghoo
#'
-#' Run the agghoo procedure (or standard cross-validation).
+#' Run the (core) agghoo procedure.
#' Arguments specify the list of models, their parameters and the
#' cross-validation settings, among others.
#'
#' a_cla$fit()
#' pc <- a_cla$predict(iris[,-5] + rnorm(600, sd=0.1))
#'
+#' @seealso Function \code{\link{compareTo}}
+#'
#' @references
#' Guillaume Maillard, Sylvain Arlot, Matthieu Lerasle. "Aggregated hold-out".
#' Journal of Machine Learning Research 22(20):1--55, 2021.