Hi Michael, I made couple changes to implicit ALS. One gives faster construction of YtY (https://github.com/apache/spark/pull/161), which was merged into master. The other caches intermediate matrix factors properly (https://github.com/apache/spark/pull/165). They should give you the same result as before, but faster (~2x in my local tests). If you have time to try the improved version, please let me know the speed-up on your data. Thanks!
Best, Xiangrui On Mon, Mar 17, 2014 at 5:07 PM, Michael Allman <m...@allman.ms> wrote: > I've created https://spark-project.atlassian.net/browse/SPARK-1263 to address > the issue of the factor matrix recomputation. I'm planning to submit a > related pull request shortly. > > > > -- > View this message in context: > http://apache-spark-user-list.1001560.n3.nabble.com/possible-bug-in-Spark-s-ALS-implementation-tp2567p2785.html > Sent from the Apache Spark User List mailing list archive at Nabble.com.
