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From "Sean Owen (JIRA)" <>
Subject [jira] Commented: (MAHOUT-65) Add Element Labels to Vectors and Matrices
Date Mon, 06 Jul 2009 08:20:15 GMT


Sean Owen commented on MAHOUT-65:

You are right. I think these two changes kind of collided as they were submitted about the
same time. I will review all the existing clone() methods and make fixes.

NB that the clone() method must be updated when you add fields! think of it as another pseudo-constructor
(which is one reason Josh Bloch kind of argues against clone()). May seem bad, but this is
just the old copy() method, and it does have its uses.

> Add Element Labels to Vectors and Matrices
> ------------------------------------------
>                 Key: MAHOUT-65
>                 URL:
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Matrix
>    Affects Versions: 0.1
>            Reporter: Jeff Eastman
>            Assignee: Jeff Eastman
>         Attachments: MAHOUT-65-name.patch, MAHOUT-65-name.patch, MAHOUT-65-name.patch,
MAHOUT-65.patch, MAHOUT-65b.patch, MAHOUT-65c.patch, MAHOUT-65d.patch
> Many applications can benefit by accessing elements in vectors and matrices using String
labels in addition to numeric indices. Investigate adding such a capability.

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