Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/9484#discussion_r44091629
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAModel.scala ---
@@ -367,6 +367,34 @@ class LocalLDAModel private[clustering] (
}
/**
+ * Predicts the topic mixture distribution for a document (often called
"theta" in the
+ * literature). Returns a vector of zeros for an empty document.
+ *
+ * Note this means to allow quick query for single document. For batch
documents, please refer
+ * to [[topicDistributions(documents: RDD[(Long, Vector)])]] to avoid
overhead.
+ *
+ * @param document document to predict topic mixture distributions for
+ * @return (document ID, topic mixture distribution for document)
+ */
+ @Since("1.6.0")
+ def topicDistributions(document: (Long, Vector)): (Long, Vector) = {
--- End diff --
Can you please remove the doc ID? It's not necessary for a single doc, and
removing it will make this more Java-friendly.
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