setinfo
From xgboost v0.4-2
by Tong He
Set information of an xgb.DMatrix object
Set information of an xgb.DMatrix object
Usage
setinfo(object, ...)## S3 method for class 'xgb.DMatrix':
setinfo(object, name, info)
Arguments
- object
- Object of class "xgb.DMatrix"
- ...
- other parameters
- name
- the name of the field to get
- info
- the specific field of information to set
Details
It 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 ;group
.
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))
Community examples
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