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https://issues.apache.org/jira/browse/MAHOUT-130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717502#action_12717502
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Grant Ingersoll commented on MAHOUT-130:
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{quote} val = 0;
for (int i = 0; i< cardinality(); i++){ val += Math.pow(getQuick(i), power); }
val = vec.zSum();
{quote}
Shall I assume this last val assignment is a typo?
Also, how much rounding error would you expect? I notice a small difference
(thousandths place) when Implementing w/o the vector approach:
norm: [s3, 0:0.30010006671856176, 1:0.6002001334371235, 2:0.9003002001556853, ]
is not equal to expected: [s3, 0:0.3028534321386899, 1:0.6057068642773799,
2:0.9085602964160698, ]
> Vector should allow for other normalize powers than the L-2 norm
> ----------------------------------------------------------------
>
> Key: MAHOUT-130
> URL: https://issues.apache.org/jira/browse/MAHOUT-130
> Project: Mahout
> Issue Type: Improvement
> Reporter: Grant Ingersoll
> Assignee: Grant Ingersoll
> Priority: Minor
> Attachments: MAHOUT-130.patch
>
>
> Modify Vector to allow other normalize functions for the Vector
> See
> http://www.lucidimagination.com/search/document/bf3a7a7a004d4191/norm_calculations
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