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 class 'xgb.DMatrix': 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 thexgb.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 0.4-2, License: Apache License (== 2.0) | file LICENSE

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