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https://issues.apache.org/jira/browse/MAHOUT-1097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13474343#comment-13474343
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Dmitriy Lyubimov commented on MAHOUT-1097:
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Are you sure? Are you using latest trunk?
Still don't see the problem.
This is the way U paths are set up :
{code}
Path svPath = new Path(outputPath, "Sigma");
Path uPath = new Path(outputPath, "U");
Path uSigmaPath = new Path(outputPath, "USigma");
Path uHalfSigmaPath = new Path(outputPath, "UHalfSigma");
Path vPath = new Path(outputPath, "V");
Path vHalfSigmaPath = new Path(outputPath, "VHalfSigma");
Path vSigmaPath = new Path(outputPath, "VSigma");
{code}
And one person who was using U*Sigma output actually confirmed it worked fine
for him... all outputs are saved in output folder but form hierarchy
so basically outputs should be as
output/Sigma -- singular values
output/U -- U
output/V -- V
output/USigma -- U*Sigma
...
and so on per above.
Keep in mind that U and V are enabled by default and USigma is disabled. I
guess you need to use something like
mahout ssvd -k 80 --pca -U false -V false --us true
to get the desired outcome.
> SSVd does not writing uSigma after uSigma true
> ----------------------------------------------
>
> Key: MAHOUT-1097
> URL: https://issues.apache.org/jira/browse/MAHOUT-1097
> Project: Mahout
> Issue Type: Bug
> Components: Math
> Affects Versions: 0.8
> Reporter: Smita Wadhwa
> Fix For: 0.8
>
> Attachments: ssvd_cusigma.diff
>
>
> SSVd does not writing uSigma file after uSigma variable true
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