Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/13159#discussion_r63758013
--- Diff: mllib/src/main/scala/org/apache/spark/ml/feature/PCA.scala ---
@@ -53,7 +53,8 @@ private[feature] trait PCAParams extends Params with
HasInputCol with HasOutputC
/**
* :: Experimental ::
- * PCA trains a model to project vectors to a low-dimensional space using
PCA.
+ * PCA trains a model to project vectors to a lower dimensional space of
the top [[PCA!.k]]
--- End diff --
while you're looking @holdenk , is this right with the "!"? I saw this
somewhere else and without that it seems like it can't find `k`, but I couldn't
find anything about it in scaladoc.
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