Parameter docs for fields used in lgb.Dataset
construction
vector of labels to use as the target variable
numeric vector of sample weights
initial score is the base prediction lightgbm will boost from
used for learning-to-rank tasks. An integer vector describing how to
group rows together as ordered results from the same set of candidate results
to be ranked. For example, if you have a 100-document dataset with
group = c(10, 20, 40, 10, 10, 10)
, that means that you have 6 groups,
where the first 10 records are in the first group, records 11-30 are in the
second group, etc.