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From Phil Steitz <p...@steitz.com>
Subject Re: svn commit: r1414470 - /commons/proper/math/trunk/src/changes/changes.xml
Date Wed, 28 Nov 2012 01:41:52 GMT
On 11/27/12 3:43 PM, erans@apache.org wrote:
> Author: erans
> Date: Tue Nov 27 23:43:06 2012
> New Revision: 1414470
>
> URL: http://svn.apache.org/viewvc?rev=1414470&view=rev
> Log:
> Contents for the release notes.
>
> Modified:
>     commons/proper/math/trunk/src/changes/changes.xml
>
> Modified: commons/proper/math/trunk/src/changes/changes.xml
> URL: http://svn.apache.org/viewvc/commons/proper/math/trunk/src/changes/changes.xml?rev=1414470&r1=1414469&r2=1414470&view=diff
> ==============================================================================
> --- commons/proper/math/trunk/src/changes/changes.xml (original)
> +++ commons/proper/math/trunk/src/changes/changes.xml Tue Nov 27 23:43:06 2012
> @@ -51,6 +51,31 @@ If the output is not quite correct, chec
>    </properties>
>    <body>
>      <release version="3.1" date="TBD" description="
> +This is a minor release: It combines bug fixes and new features.
> +  Changes to existing features were made in a backwards-compatible
> +  way such as to allow drop-in replacement of the v3.0 JAR file.
> +  
> +  Most notable among the new features are: Framework for automatic
> +  differentiation, multivariate mixture model distribution, quaternions,
> +  Gauss integration framework, Hermite polynomial interpolation,
> +  eigenvalue decomposition of non-symmetric matrices.
> +  Most notable among the changes are: Greatly improved precision in
> +  the implementation of Gamma and Beta special functions, optimizers
> +  API, deprecation of the sparse vector implementation.
> +  
> +  The minimal version of the Java platform required to compile and use
> +  Commons Math is Java 5.
> +  Users are encouraged to upgrade to this version as this release not
> +  only includes bug fixes but also deprecates numerous classes and
> +  methods that will be deleted from the next major release (4.0).
> +  
> +  Caveat:
> +  1. The implementation of the BOBYQA optimization algorithm is in alpha
> +  state (cf. MATH-621): Many code paths are untested, and we are looking
> +  for volunteers to improve the code readability, robustness and performance
> +  and to extend the unit tests suite.
> +  2. A few methods in the FastMath class are in fact slower that their
> +  counterpart in either Math or StrictMath (cf. MATH-740 and MATH-901).
>  ">
>        <action dev="erans" type="add" issue="MATH-910">
>          Added element-by-element addition, subtraction, multiplication and division
>
>
>
Nice work!  Definitely past time for a release :)

Phil

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