0b36f8fba1
- Limit the number of used CPU cores in examples. - Add a note for the constraint. - Bring back the cleanup script.
43 lines
1.1 KiB
R
43 lines
1.1 KiB
R
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/xgb.DMatrix.R
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\name{setinfo}
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\alias{setinfo}
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\alias{setinfo.xgb.DMatrix}
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\title{Set information of an xgb.DMatrix object}
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\usage{
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setinfo(object, ...)
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\method{setinfo}{xgb.DMatrix}(object, name, info, ...)
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}
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\arguments{
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\item{object}{Object of class "xgb.DMatrix"}
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\item{...}{other parameters}
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\item{name}{the name of the field to get}
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\item{info}{the specific field of information to set}
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}
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\description{
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Set information of an xgb.DMatrix object
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}
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\details{
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The \code{name} field can be one of the following:
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\itemize{
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\item \code{label}: label XGBoost learn from ;
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\item \code{weight}: to do a weight rescale ;
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\item \code{base_margin}: base margin is the base prediction XGBoost will boost from ;
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\item \code{group}: number of rows in each group (to use with \code{rank:pairwise} objective).
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}
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}
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\examples{
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data(agaricus.train, package='xgboost')
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dtrain <- with(agaricus.train, xgb.DMatrix(data, label = label, nthread = 2))
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labels <- getinfo(dtrain, 'label')
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setinfo(dtrain, 'label', 1-labels)
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labels2 <- getinfo(dtrain, 'label')
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stopifnot(all.equal(labels2, 1-labels))
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}
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