Github user yanboliang commented on a diff in the pull request:
https://github.com/apache/spark/pull/16646#discussion_r97007956
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/r/GaussianMixtureWrapper.scala ---
@@ -91,7 +92,10 @@ private[r] object GaussianMixtureWrapper extends
MLReadable[GaussianMixtureWrapp
.setStages(Array(rFormulaModel, gm))
.fit(data)
- new GaussianMixtureWrapper(pipeline, dim)
+ val gmm: GaussianMixtureModel =
pipeline.stages(1).asInstanceOf[GaussianMixtureModel]
--- End diff --
We need here to explicitly get ```logLikelihood``` and make it a member of
the wrapper, since ```summary``` was not saved in the pipeline model so we
can't get it (after L40) from a persistent R gaussian mixture model.
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