Github user holdenk commented on a diff in the pull request: https://github.com/apache/spark/pull/13159#discussion_r63760782 --- 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 -- Yah I took a look - it seems to generate the correct link and we use it elsewhere but it doesn't seem to really do much.
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