xgboost (version 0.6-2)

getinfo: Get information of an xgb.DMatrix object

Description

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 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.

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))

Run the code above in your browser using DataCamp Workspace