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Posted to dev@mahout.apache.org by "Lance Norskog (Updated) (JIRA)" <ji...@apache.org> on 2011/12/28 09:55:32 UTC

[jira] [Updated] (MAHOUT-884) Matrix Concatenate utility

     [ https://issues.apache.org/jira/browse/MAHOUT-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lance Norskog updated MAHOUT-884:
---------------------------------

    Attachment: MAHOUT-884.patch

Completely redone. Now a Hadoop job which uses Jake's trick of caching the row widths.
                
> Matrix Concatenate utility
> --------------------------
>
>                 Key: MAHOUT-884
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-884
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Integration
>            Reporter: Lance Norskog
>            Priority: Minor
>         Attachments: MAHOUT-884.patch, MAHOUT-884.patch, MAHOUT-884.patch
>
>
> Utility to concatenate matrices stored as SequenceFiles of vectors.
> Each pair in the SequenceFile is the IntWritable row number and a VectorWritable.
> The input and output files may skip rows. 

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