Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/15883#discussion_r87923913 --- Diff: R/pkg/R/mllib.R --- @@ -896,9 +898,10 @@ setMethod("summary", signature(object = "LogisticRegressionModel"), #' summary(savedModel) #' } #' @note spark.mlp since 2.1.0 -setMethod("spark.mlp", signature(data = "SparkDataFrame"), - function(data, layers, blockSize = 128, solver = "l-bfgs", maxIter = 100, +setMethod("spark.mlp", signature(data = "SparkDataFrame", formula = "formula"), + function(data, formula, layers, blockSize = 128, solver = "l-bfgs", maxIter = 100, --- End diff -- if without `formula` works before, is/should `formula` be optional then? with this change it will require it
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