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Posted to issues@spark.apache.org by "Shivaram Venkataraman (JIRA)" <ji...@apache.org> on 2014/10/14 19:55:34 UTC
[jira] [Assigned] (SPARK-3434) Distributed block matrix
[ https://issues.apache.org/jira/browse/SPARK-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shivaram Venkataraman reassigned SPARK-3434:
--------------------------------------------
Assignee: Shivaram Venkataraman
> Distributed block matrix
> ------------------------
>
> Key: SPARK-3434
> URL: https://issues.apache.org/jira/browse/SPARK-3434
> Project: Spark
> Issue Type: New Feature
> Components: MLlib
> Reporter: Xiangrui Meng
> Assignee: Shivaram Venkataraman
>
> This JIRA is for discussing distributed matrices stored in block sub-matrices. The main challenge is the partitioning scheme to allow adding linear algebra operations in the future, e.g.:
> 1. matrix multiplication
> 2. matrix factorization (QR, LU, ...)
> Let's discuss the partitioning and storage and how they fit into the above use cases.
> Questions:
> 1. Should it be backed by a single RDD that contains all of the sub-matrices or many RDDs with each contains only one sub-matrix?
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