#' Predict a new shape of \code{horizon} values at day index \code{today}
#' using \code{memory} days in the past.}
#' \item{\code{getParameters()}}{
#' Predict a new shape of \code{horizon} values at day index \code{today}
#' using \code{memory} days in the past.}
#' \item{\code{getParameters()}}{