spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xiangrui Meng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-12869) Optimize conversion from BlockMatrix to IndexedRowMatrix
Date Mon, 21 Mar 2016 19:27:25 GMT

     [ https://issues.apache.org/jira/browse/SPARK-12869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xiangrui Meng updated SPARK-12869:
----------------------------------
    Assignee: Fokko Driesprong

> Optimize conversion from BlockMatrix to IndexedRowMatrix
> --------------------------------------------------------
>
>                 Key: SPARK-12869
>                 URL: https://issues.apache.org/jira/browse/SPARK-12869
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>    Affects Versions: 1.6.0
>            Reporter: Fokko Driesprong
>            Assignee: Fokko Driesprong
>            Priority: Minor
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> In the current implementation of the BlockMatrix, the conversion to the IndexedRowMatrix
is done by converting it to a CoordinateMatrix first. This is somewhat ok when the matrix
is very sparse, but for dense matrices this is very inefficient.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message