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#' @rdname PredictionData
#' @export
check_prediction_data.PredictionDataRegr = function(pdata, ...) { # nolint
pdata$row_ids = assert_row_ids(pdata$row_ids)
n = length(pdata$row_ids)
if (is.null(pdata$truth)) pdata$truth = NA_real_
if (!length(pdata$row_ids)) pdata$truth = numeric(0)
if (!is.null(pdata$response)) {
pdata$response = assert_numeric(unname(pdata$response))
assert_prediction_count(length(pdata$response), n, "response")
}
if (!is.null(pdata$se)) {
pdata$se = assert_numeric(unname(pdata$se), lower = 0)
assert_prediction_count(length(pdata$se), n, "se")
}
if (!is.null(pdata$distr)) {
assert_class(pdata$distr, "VectorDistribution")
if (is.null(pdata$response)) {
pdata$response = unname(pdata$distr$mean())
}
if (is.null(pdata$se)) {
pdata$se = unname(pdata$distr$stdev())
}
}
pdata
}
#' @rdname PredictionData
#' @export
is_missing_prediction_data.PredictionDataRegr = function(pdata, ...) { # nolint
miss = logical(length(pdata$row_ids))
if (!is.null(pdata$response)) {
miss = is.na(pdata$response)
}
if (!is.null(pdata$se)) {
miss = miss | is.na(pdata$se)
}
pdata$row_ids[miss]
}
#' @rdname PredictionData
#' @export
c.PredictionDataRegr = function(..., keep_duplicates = TRUE) { # nolint
dots = list(...)
assert_list(dots, "PredictionDataRegr")
assert_flag(keep_duplicates)
if (length(dots) == 1L) {
return(dots[[1L]])
}
predict_types = names(mlr_reflections$learner_predict_types$regr)
predict_types = map(dots, function(x) intersect(names(x), predict_types))
if (!every(predict_types[-1L], setequal, y = predict_types[[1L]])) {
stopf("Cannot combine predictions: Different predict types")
}
elems = c("row_ids", "truth", intersect(predict_types[[1L]], c("response", "se")))
tab = map_dtr(dots, function(x) x[elems], .fill = FALSE)
if (!keep_duplicates) {
tab = unique(tab, by = "row_ids", fromLast = TRUE)
}
result = as.list(tab)
if ("distr" %in% predict_types[[1L]]) {
require_namespaces("distr6", msg = "To predict probability distributions, please install %s")
result$distr = do.call(c, map(dots, "distr"))
}
new_prediction_data(result, "regr")
}
#' @export
filter_prediction_data.PredictionDataRegr = function(pdata, row_ids, ...) {
keep = pdata$row_ids %in% row_ids
pdata$row_ids = pdata$row_ids[keep]
pdata$truth = pdata$truth[keep]
if (!is.null(pdata$response)) {
pdata$response = pdata$response[keep]
}
if (!is.null(pdata$se)) {
pdata$se = pdata$se[keep]
}
pdata
}
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