Hi, Deb.
Thanks for your idea to use ALS for PLSA training. I discussed it with our
engineers and it seems it's better to use EM. We have the following points:
1. We have some doubts that ALS is applicable to the problem. By its
definition, PLSA is a matrix decomposition with respect to Kullback–
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.
Hello guys,
We made pull request with PLSA and its modifications:
- https://github.com/apache/spark/pull/1269
- JIRA issue SPARK-2199
Could somebody look at the code and provide some feedback what we should
improve.
Best regards,
Denis Turdakov
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