Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/18140#discussion_r119021523
--- Diff: R/pkg/R/mllib_regression.R ---
@@ -70,6 +70,12 @@ setClass("IsotonicRegressionModel", representation(jobj
= "jobj"))
#' the relationship between the variance and mean of
the distribution. Only
#' applicable to the Tweedie family.
#' @param link.power the index in the power link function. Only applicable
to the Tweedie family.
+#' @param stringIndexerOrderType how to order categories of a string
feature column. This is used to
+#' decide the base level of a string feature
as the last category after
+#' ordering is dropped when encoding
strings. Supported options are
+#' 'frequencyDesc', 'frequencyAsc',
'alphabetDesc', 'alphabetAsc'.
--- End diff --
let's quote with `"`
optionally, use `\code{}`
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