#' \item Neighbors : use values from the k closest neighbors' tomorrows
#' \item Average : global average of all the (similar) "tomorrow of past"
#' \item Zero : just output 0 (benchmarking purpose)
-#' \item Level : output a flat serie repeating the last observed level
#' }
#' @param pjump How to predict the jump at the interface between two days ?
#' \itemize{