[jira] Updated: (MAHOUT-131) Vector improvements

["Grant Ingersoll (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Grant Ingersoll updated MAHOUT-131:
-----------------------------------

    Status: Patch Available  (was: Open)

> Vector improvements
> -------------------
>
>                 Key: MAHOUT-131
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-131
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
>            Priority: Minor
>             Fix For: 0.2
>
>
> Vector and it's implementations could use a few things:
> 1. DenseVector should implement equals and hashCode similar to SparseVector
> 2. The VectorView asFormatString() is not compatible with actually recreating any type of vector.  
> 3. Add tests to VectorTest that assert that decodeFormat/asFormatString is able to do a round trip.
> 4. Add static AbstractVector.equivalent(Vector, Vector) that takes in two vectors and compares them for equality, regardless of their implementation.

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