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[R] Use new predict function. (#6819)

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* Call new C prediction API.
* Add `strict_shape`.
* Add `iterationrange`.
* Update document.
This commit is contained in:
Jiaming Yuan
2021-06-11 13:03:29 +08:00
committed by GitHub
parent 25514e104a
commit b56614e9b8
18 changed files with 293 additions and 160 deletions
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R-package/R/utils.R
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@@ -178,7 +178,8 @@ xgb.iter.eval <- function(booster_handle, watchlist, iter, feval = NULL) {
} else {
res <- sapply(seq_along(watchlist), function(j) {
w <- watchlist[[j]]
preds <- predict(booster_handle, w, outputmargin = TRUE, ntreelimit = 0) # predict using all trees
## predict using all trees
preds <- predict(booster_handle, w, outputmargin = TRUE, iterationrange = c(1, 1))
eval_res <- feval(preds, w)
out <- eval_res$value
names(out) <- paste0(evnames[j], "-", eval_res$metric)