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Posted to dev@mahout.apache.org by "Ankur (JIRA)" <ji...@apache.org> on 2010/12/16 09:47:01 UTC

[jira] Assigned: (MAHOUT-565) Features incorrectly hashed in Minhash

     [ https://issues.apache.org/jira/browse/MAHOUT-565?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ankur reassigned MAHOUT-565:
----------------------------

    Assignee: Ankur

> 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
>
> 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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