incubator-hama-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Samuel Guo (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HAMA-170) Implementation of Matrix.Norm
Date Fri, 08 May 2009 09:33:45 GMT

    [ https://issues.apache.org/jira/browse/HAMA-170?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12707290#action_12707290
] 

Samuel Guo commented on HAMA-170:
---------------------------------

Edward, It seems that you mis-understand Norm-1 and Norm-inf.

'Norm-1' is simply the maximum absolute column sum of the matrix

'Norm-inf' is simply the maximum absolute row sum of the matrix

Plz check the wikipedia: http://en.wikipedia.org/wiki/Matrix_norm

> Implementation of Matrix.Norm
> -----------------------------
>
>                 Key: HAMA-170
>                 URL: https://issues.apache.org/jira/browse/HAMA-170
>             Project: Hama
>          Issue Type: Improvement
>          Components: implementation
>    Affects Versions: 0.1.0
>            Reporter: Edward J. Yoon
>            Assignee: Edward J. Yoon
>             Fix For: 0.1.0
>
>
>   enum Norm {
>     /** Maximum absolute row sum */
>     One,
>     /** The root of sum of the sum of squares */
>     Frobenius,
>     
>     /** Largest entry in absolute value */
>     Infinity,
>     
>     /** Largest entry in absolute value. Not a proper matrix norm  */
>     Maxvalue
>   }

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message