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https://issues.apache.org/jira/browse/MAHOUT-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720886#action_12720886
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Jeff Eastman commented on MAHOUT-65:
------------------------------------
I changed the code to substitute 10 random double values and it tipped the
scales in favor of #4, but not by much:
{noformat}
3 300 =
{"class":"org.apache.mahout.matrix.TestVector","vector":"{\"indexes\":[1,2,3,4,5,6,7,8,9],\"values
<snip>
4 247 = <snip>
{noformat}
Then I upped the number to 1000 entries to correspond with our text term
vectors. Almost a 2:1 advantage but no readability:
{noformat}
3 23283
4 12131
{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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