Hi, Deb. I don't quite understand the question. PLSA is an instance of matrix factorization problem.
If you are asking about inference algorithm, we use EM-algorithm. Description of this approach is, for example, here: http://www.machinelearning.ru/wiki/images/1/1f/Voron14aist.pdf Best, Denis. -- View this message in context: http://apache-spark-developers-list.1001551.n3.nabble.com/PLSA-tp7170p7179.html Sent from the Apache Spark Developers List mailing list archive at Nabble.com.