Set categorical feature of lgb.Dataset

Set categorical feature of lgb.Dataset

lgb.Dataset.set.categorical(dataset, categorical_feature)

Arguments

dataset	object of class lgb.Dataset
categorical_feature	categorical features

Value

passed dataset

Examples

library(lightgbm)
data(agaricus.train, package = "lightgbm")
train <- agaricus.train
dtrain <- lgb.Dataset(train$data, label = train$label)
lgb.Dataset.save(dtrain, "lgb.Dataset.data")
dtrain <- lgb.Dataset("lgb.Dataset.data")
lgb.Dataset.set.categorical(dtrain, 1:2)