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[SPARK-12952] EMLDAOptimizer initialize() should return EMLDAOptimizer other than its parent class #10863

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[SPARK-12952] EMLDAOptimizer initialize() should return EMLDAOptimizer other than its parent class #10863

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4 changes: 3 additions & 1 deletion mllib/src/main/scala/org/apache/spark/mllib/clustering/LDAOptimizer.scala
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Expand Up @@ -95,7 +95,9 @@ final class EMLDAOptimizer extends LDAOptimizer {
/**
* Compute bipartite term/doc graph.
*/
override private[clustering] def initialize(docs: RDD[(Long, Vector)], lda: LDA): LDAOptimizer = {
override private[clustering] def initialize(
docs: RDD[(Long, Vector)],
lda: LDA): EMLDAOptimizer = {
// EMLDAOptimizer currently only supports symmetric document-topic priors
val docConcentration = lda.getDocConcentration

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