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https://issues.apache.org/jira/browse/MAHOUT-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720768#action_12720768
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Jeff Eastman commented on MAHOUT-65:
------------------------------------
Perhaps, though the Json representation of Sean's new SparseVector looks pretty
dense. Realistic element values would be larger than these test values, of
course. A thousand double terms will still add up:
{noformat}
Vec:
{"class":"org.apache.mahout.matrix.SparseVector","vector":"{\"values\":{\"indices\":[0,1,2],\"values\":[1.0,2.0,3.0],\"numMappings\":3},\"cardinality\":3}"}
{noformat}
> Add Element Labels to Vectors and Matrices
> ------------------------------------------
>
> Key: MAHOUT-65
> URL: https://issues.apache.org/jira/browse/MAHOUT-65
> Project: Mahout
> Issue Type: New Feature
> Components: Matrix
> Affects Versions: 0.1
> Reporter: Jeff Eastman
> Assignee: Jeff Eastman
> Attachments: MAHOUT-65-name.patch, MAHOUT-65-name.patch,
> MAHOUT-65-name.patch, MAHOUT-65.patch, MAHOUT-65b.patch, MAHOUT-65c.patch,
> MAHOUT-65d.patch
>
>
> Many applications can benefit by accessing elements in vectors and matrices
> using String labels in addition to numeric indices. Investigate adding such a
> capability.
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