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Posted to dev@mahout.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2010/12/16 15:22:00 UTC
[jira] Resolved: (MAHOUT-565) Features incorrectly hashed in
Minhash
[ https://issues.apache.org/jira/browse/MAHOUT-565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen resolved MAHOUT-565.
------------------------------
Resolution: Fixed
Fix Version/s: 0.5
OK committed without that one bit.
> Features incorrectly hashed in Minhash
> --------------------------------------
>
> Key: MAHOUT-565
> URL: https://issues.apache.org/jira/browse/MAHOUT-565
> Project: Mahout
> Issue Type: Bug
> Affects Versions: 0.4
> Reporter: Ankur
> Assignee: Ankur
> Fix For: 0.5
>
> Attachments: jira-565.v1.patch
>
>
> Given a feature vector for which minhash signature is desired, each feature id (an integer) is converted to a byte array through a series of bit shift operations. Current implementation of these operations doesn't mask the bits being shifted resulting in sign bit being shifted.
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