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#' Summary method for online models
#'
#' Calculates parameters chosen during optimization and aggregates losses.
#' @param object Object of class inheriting from 'online'
#' @param ... further arguments are ignored
#' @export
summary.online <- function(object, ...) {
experts_loss <- round(apply(object$experts_loss, 4, mean), 5)
forecaster_loss <- mean(object$forecaster_loss)
pargrid <- object$parametergrid[object$opt_index, ]
chosen_basis_pr <- object$params_basis_pr[pargrid[, "basis_pr_idx"], ]
chosen_basis_mv <- object$params_basis_mv[pargrid[, "basis_mv_idx"], ]
chosen_hat_pr <- object$params_hat_pr[pargrid[, "hat_pr_idx"], ]
chosen_hat_mv <- object$params_hat_mv[pargrid[, "hat_mv_idx"], ]
lt <- object$specification$parameters$lead_time
# Set unused values to NA
if (lt > 0) {
pargrid[1:lt, ] <- NA
chosen_basis_pr[1:lt, ] <- NA
chosen_basis_mv[1:lt, ] <- NA
chosen_hat_pr[1:lt, ] <- NA
chosen_hat_mv[1:lt, ] <- NA
}
value <- as.numeric(tail(pargrid, 1))
parnames <- colnames(object$parametergrid)
cat("General\n")
df <- data.frame("Value" = value, row.names = parnames)
print(df)
cat("\n")
cat("Probabilistic Basis Smoothing\n")
print(chosen_basis_pr[nrow(chosen_basis_pr), ])
cat("\n")
cat("Multivariate Basis Smoothing\n")
print(chosen_basis_mv[nrow(chosen_basis_mv), ])
cat("\n")
cat("Probabilistic P-Spline Smoothing\n")
print(chosen_hat_pr[nrow(chosen_hat_pr), ])
cat("\n")
cat("Multivariate P-Spline Smoothing\n")
print(chosen_hat_mv[nrow(chosen_hat_mv), ])
return(invisible(list(
experts_loss = experts_loss,
forecaster_loss = forecaster_loss,
chosen_parameters = pargrid,
chosen_basis_pr = chosen_basis_pr,
chosen_basis_mv = chosen_basis_mv,
chosen_hat_pr = chosen_hat_pr,
chosen_hat_mv = chosen_hat_mv
)))
}
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