getinfo

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Get information of an xgb.DMatrix object

Get information of an xgb.DMatrix object

Usage
getinfo(object, ...)
"getinfo"(object, name)
Arguments
object
Object of class xgb.DMatrix
...
other parameters
name
the name of the field to get
Details

The information 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-method
Examples
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 0.4-4, License: Apache License (== 2.0) | file LICENSE

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