felixcheung commented on a change in pull request #23072:
[SPARK-19827][R]spark.ml R API for PIC
URL: https://github.com/apache/spark/pull/23072#discussion_r240492041
##########
File path: R/pkg/R/mllib_clustering.R
##########
@@ -610,3 +616,59 @@ setMethod("write.ml", signature(object = "LDAModel", path
= "character"),
function(object, path, overwrite = FALSE) {
write_internal(object, path, overwrite)
})
+
+#' PowerIterationClustering
+#'
+#' A scalable graph clustering algorithm. Users can call
\code{spark.assignClusters} to
+#' return a cluster assignment for each input vertex.
+#'
+# Run the PIC algorithm and returns a cluster assignment for each input
vertex.
+#' @param data a SparkDataFrame.
+#' @param k the number of clusters to create.
+#' @param initMode the initialization algorithm.
Review comment:
add `One of "random", "degree"`?
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