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From "emmanue joliet (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-870) Deprecate interfaces and implementations of sparse vectors and matrices
Date Tue, 28 Jan 2014 12:34:38 GMT

    [ https://issues.apache.org/jira/browse/MATH-870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13884065#comment-13884065
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emmanue joliet commented on MATH-870:
-------------------------------------

Why should be removed??? We use it heavily and need the class as it gives what we need (handling
the input of course!)
I understand the problem of an incorrect/improper handling of NaN/Infinity conditions but
can't justify to remove the classes completely? Isn't it??


> Deprecate interfaces and implementations of sparse vectors and matrices
> -----------------------------------------------------------------------
>
>                 Key: MATH-870
>                 URL: https://issues.apache.org/jira/browse/MATH-870
>             Project: Commons Math
>          Issue Type: Improvement
>    Affects Versions: 4.0
>            Reporter: S├ębastien Brisard
>            Priority: Minor
>
> Recently, many problems have been found out with class
> {{OpenMapRealVector}} (see MATH-803 and MATH-821), to the point that the complete removal
of this class in upcoming versions (as of 4.0) has been agreed [markmail|http://markmail.org/thread/bseyswf7qqrgatru].
> Since it now becomes useless, {{SparseRealVector}} will also be removed. For the sake
of consistency, {{SparseFieldVector}} will also be removed.
> Furthermore, it is expected that the same kind of bugs will occur with sparse implementations
of real/field matrices, which will also be removed.
> In version 3.1, the following classes and interfaces will be deprecated
> * {{SparseRealVector}}
> * {{OpenMapRealVector}}
> * {{SparseFieldVector}}
> * {{SparseRealMatrix}}
> * {{OpenMapRealMatrix}}
> * {{SparseFieldMatrix}}
> They will be completely removed in version 4.0.



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