getinfo

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Get information of an xgb.DMatrix object

Get information of an xgb.DMatrix object

Usage
getinfo(object, ...)

# S3 method for xgb.DMatrix getinfo(object, name, ...)

Arguments
object

Object of class xgb.DMatrix

...

other parameters

name

the name of the information field to get (see details)

Details

The name field can be one of the following:

  • label: label Xgboost learn from ;

  • weight: to do a weight rescale ;

  • base_margin: base margin is the base prediction Xgboost will boost from ;

  • nrow: number of rows of the xgb.DMatrix.

Aliases
  • getinfo
  • getinfo.xgb.DMatrix
Examples
# NOT RUN {
data(agaricus.train, package='xgboost')
train <- agaricus.train
dtrain <- xgb.DMatrix(train$data, label=train$label)

labels <- getinfo(dtrain, 'label')
setinfo(dtrain, 'label', 1-labels)

labels2 <- getinfo(dtrain, 'label')
stopifnot(all(labels2 == 1-labels))
# }
Documentation reproduced from package xgboost, version 0.6-4, License: Apache License (== 2.0) | file LICENSE

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