Set reference of lgb.Dataset

Description

If you want to use validation data, you should set reference to training data

Usage

lgb.Dataset.set.reference(dataset, reference)

Arguments

Value

passed dataset

Examples

library(lightgbm)
data(agaricus.train, package ="lightgbm")
train <- agaricus.train
dtrain <- lgb.Dataset(train$data, label = train$label)
data(agaricus.test, package = "lightgbm")
test <- agaricus.test
dtest <- lgb.Dataset(test$data, test = train$label)
lgb.Dataset.set.reference(dtest, dtrain)