Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/18496#discussion_r125154606 --- Diff: R/pkg/R/mllib_tree.R --- @@ -374,6 +374,10 @@ setMethod("write.ml", signature(object = "GBTClassificationModel", path = "chara #' nodes. If TRUE, the algorithm will cache node IDs for each instance. Caching #' can speed up training of deeper trees. Users can set how often should the #' cache be checkpointed or disable it by setting checkpointInterval. +#' @param handleInvalid How to handle invalid data (unseen labels or NULL values) in classification model. --- End diff -- is this on "features" or "labels"? it seems it's only set on RFormula.terms which are features
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