Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/7801#discussion_r35918284
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAModel.scala ---
@@ -218,8 +218,16 @@ class LocalLDAModel private[clustering] (
LocalLDAModel.SaveLoadV1_0.save(sc, path, topicsMatrix,
docConcentration, topicConcentration,
gammaShape)
}
- // TODO
- // override def logLikelihood(documents: RDD[(Long, Vector)]): Double =
???
+
+ // TODO: declare in LDAModel and override once implemented in
DistributedLDAModel
+ /**
+ * Calculates an upper bound on the log likelihood of the entire corpus.
--- End diff --
This is a lower bound, not an upper bound, on the log likelihood.
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