The Apache Commons Team is pleased to announce the release of Apache
Commons Math 3.3.
Apache Commons Math is a library of lightweight, self-contained
mathematics and statistics components addressing the most common
problems not available in the Java programming language or Commons
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.x JAR file. Most notable
among the new features are: Framework for creating artificial neural
nets, self organizing feature maps, computational geometry algorithms
(convex hull, enclosing ball), performance improvements of the linear
simplex solver, refactoring of curve fitters, low-discrepancy random
generators (sobol, halton), least-squares fitting.
The minimum version of the Java platform required to compile and use
Apache 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).
3. A few methods/constructors in the package
o.a.c.m.geometry.partitioning have changed their signature in a non
backwards-compatible way. The respective classes are intended to be
package private only and are not supposed to be used for other
purposes.
Source and binary distributions are available for download from the
Apache Commons Math download site:
http://commons.apache.org/proper/commons-math/download_math.cgi
When downloading, please verify signatures using the KEYS file
available at the above location when downloading the release.
For complete information on Apache Commons Math, including
instructions on how to submit bug reports, patches, or suggestions for
improvement, see the Apache Commons Math website:
http://commons.apache.org/proper/commons-math
Luc Maisonobe, on behalf of the Apache Commons Team
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