Set information of an lgb.Dataset object

setinfo(dataset, ...)

# S3 method for lgb.Dataset
setinfo(dataset, name, info, ...)

Arguments

dataset

Object of class lgb.Dataset

...

other parameters

name

the name of the field to get

info

the specific field of information to set

Value

passed object

Details

The name field can be one of the following:

  • label: label lightgbm learn from ;

  • weight: to do a weight rescale ;

  • init_score: initial score is the base prediction lightgbm will boost from ;

  • group.

Examples

library(lightgbm) data(agaricus.train, package = "lightgbm") train <- agaricus.train dtrain <- lgb.Dataset(train$data, label = train$label) lgb.Dataset.construct(dtrain) labels <- lightgbm::getinfo(dtrain, "label") lightgbm::setinfo(dtrain, "label", 1 - labels) labels2 <- lightgbm::getinfo(dtrain, "label") stopifnot(all.equal(labels2, 1 - labels))