#'
#' @title Average Shape Forecaster
#'
-#' @description Return the (pointwise) average of the all the centered day curves in the past.
-#' Inherits \code{\link{ShapeForecaster}}
+#' @description Return the (pointwise) average of the all the (similar) centered day curves
+#' in the past. Inherits \code{\link{ShapeForecaster}}
AverageShapeForecaster = setRefClass(
Class = "AverageShapeForecaster",
contains = "ShapeForecaster",
predict = function(today, memory, horizon, ...)
{
avg = rep(0., horizon)
- for (i in (today-memory):today)
+ first_day = max(1, today-memory)
+ index = today-7 + 1
+ nb_no_na_series = 0
+ repeat
{
- if (!any(is.na(data$getSerie(i))))
- avg = avg + data$getCenteredSerie(i)
+ {
+ serie_on_horizon = data$getCenteredSerie(index)[1:horizon]
+ index = index - 7
+ };
+ if (!any(is.na(serie_on_horizon)))
+ {
+ avg = avg + serie_on_horizon
+ nb_no_na_series = nb_no_na_series + 1
+ };
+ if (index < first_day)
+ break
}
- avg
+ avg / nb_no_na_series
}
)
)