Get one attribute of a lgb.Dataset
get_field(dataset, field_name) # S3 method for lgb.Dataset get_field(dataset, field_name)
dataset | Object of class |
---|---|
field_name | String with the name of the attribute to get. One of the following.
|
requested attribute
# \donttest{ setLGBMthreads(2L) data.table::setDTthreads(1L) data(agaricus.train, package = "lightgbm") train <- agaricus.train dtrain <- lgb.Dataset(train$data, label = train$label) lgb.Dataset.construct(dtrain) labels <- lightgbm::get_field(dtrain, "label") lightgbm::set_field(dtrain, "label", 1 - labels) labels2 <- lightgbm::get_field(dtrain, "label") stopifnot(all(labels2 == 1 - labels)) # }