Author: luc
Date: Tue Apr 2 20:18:48 2013
New Revision: 1728
Log:
source and binary distribution of Apache Commons Math 3.2 (RC5)
Added:
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dev/commons/math/binaries/commons-math3-3.2-bin.tar.gz (with props)
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+
+ Apache Commons Math 3.2 RELEASE NOTES
+
+The Commons Math team is pleased to announce the release of commons-math3-3.2
+
+The Math project is a library of lightweight, self-contained mathematics and
statistics components addressing the most common practical problems not
immediately available in the Java programming language or commons-lang.
+
+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 v3.1[.1] JAR file.
+
+Most notable among the new features are: Framework for automatic
+differentiation, Lévy distribution, prime numbers, enumerated
+distributions, real field allowing to use several algorithms
+(solvers, linear algebra, 3D geometry) with different real-like
+classes (high accuracy or automatic differentiation), spherical
+coordinates with gradients and Hessians, reorganized clustering
+package with different distance implementations.
+
+The minimum 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).
+
+Changes in this version include:
+
+New features:
+o MATH-917,MATH-918,MATH-919,MATH-920: All contents of package
"o.a.c.m.stat.clustering" refactored into
+ new package "o.a.c.m.ml.clustering" and added support for additional
+ distance measures in package "o.a.c.m.ml.distance": "CanberraDistance",
+ "ChebyshevDistance", "EuclideanDistance" and "ManhattanDistance".
Thanks to Reid Hochstedler.
+o MATH-817: Added Multivariate Normal Mixture Model Fitting by Expectation
Maximization. Thanks to Jared Becksfort.
+o MATH-811: Added a way to trigger only increasing or decreasing events in
ODE integration.
+o MATH-946: Added array-scaling methods to MathArrays. Thanks to Jared
Becksfort.
+o MATH-460: Added the Lévy distribution. Thanks to Andrew Waterman.
+o MATH-948: Implementations for inverse error function and inverse
complementary
+ error functions have been added.
+o MATH-845: Added utilities for prime numbers. Thanks to Sébastien Riou.
+o MATH-914: Check bounds in multi-start vector optimizers.
+o MATH-941: Added discrete distributions. Thanks to Piotr Wydrych.
+o Added Hermite interpolator for RealFieldElement instances.
+o Added RealFieldElement interface to represent anything that is
+ real number like, implemented by both Decimal64, Dfp and
DerivativeStructure.
+o Added partial derivatives computation for 3D vectors and
rotations.
+o Added accurate linear combination of DerivativeStructure instances,
+ avoiding cancellation.
+o Added conversion of gradients and Hessians from spherical to
Cartesian
+ coordinates in 3D.
+
+Fixed Bugs:
+o MATH-961: Fixed wrong array dimensions in secondary equations handling in
some cases.
+o MATH-960: Fixed missing side effects of secondary equations on main state in
+ Ordinary Differential Equations integration.
+o MATH-957: Fixed inverse cumulative probability for uniform distribution.
Thanks to Evan Ward.
+o MATH-891: "SpearmansCorrelation" now works correctly in case of a provided
+ "NaturalRanking" with a "NaNStrategy.REMOVED" strategy and the input
+ data contains NaN values. From version 4.0 onwards this strategy will
+ not be supported anymore.
+o MATH-934: Fixed Complex.reciprocal() for zero argument.
+o MATH-862: AbstractRealMatrix will now check for rectangular input arrays in
+ its copySubMatrix methods.
+o MATH-949: Increment iteration counter in optimization algorithms.
+o MATH-950: Fixed missing update in ODE event handlers, when a RESET_STATE is
triggered.
+o MATH-947: Fixed infinite loop when NaN occurs in singular value
decomposition.
+o MATH-580: Extended ranges for FastMath performance tests.
+o MATH-925: Finalized implementation of diagonal matrix.
+o MATH-630: Added rank revealing QR decomposition. Thanks to Christopher Nix.
+o MATH-570: ArrayFieldVector can now be constructed from any FieldVector.
Thanks to Arne Plöse.
+o MATH-861: Improved checking of null vector elements. Thanks to Sébastien
Brisard.
+o MATH-936: Fixed generation of long random numbers between two bounds.
+o MATH-942: Fixed creation of generic array. Thanks to Piotr Wydrych.
+o MATH-940: Fixed abstract test class naming that broke ant builds. Thanks to
Piotr Wydrych.
+o MATH-939: Allow covariance to be computed for one-dimensional variables.
Thanks to Piotr Wydrych.
+o MATH-938: Fixed accuracy of 3D Line.revert().
+o MATH-937: Improved javadoc to explain how switching functions should
+ behave across events in ODE events detection.
+o MATH-935: Fixed DerivativeStructure.atan2 for special cases when both
arguments are +/-0.
+o MATH-930: Improved class javadoc wrt convergence criteria and added
+ additional constructors to override the default epsilon and cut-off
+ values in class "SimplexSolver".
+o MATH-929: Fixed truncated value in "MultivariateNormalDistribution". Thanks
to Piotr Wydrych.
+o MATH-927: Made "BitStreamGenerator" implement the "Serializable" interface.
Thanks to Dennis Hendriks.
+
+Changes:
+o MATH-956: Replaced hard-coded numbers in "LevenbergMarquardtOptimizer".
+o MATH-955: Fixed loading of test file when path contains a space. Thanks to
Evan Ward.
+o MATH-954: Improved speed of FastMath.abs methods for all signatures, by
removing branching. Thanks to Charles Cooper.
+o MATH-953: Improved speed of several FastMath methods. Thanks to Charles
Cooper.
+o MATH-951: Improved speed of FastMath copysign methods. Thanks to Charles
Cooper.
+o MATH-671: Made EmpiricalDisribution smoothing kernel pluggable.
+o MATH-877: Allow direct use of SummaryStatistics in one-way ANOVA. Thanks to
Peter Andrews.
+o Normal distribution now uses a direct implementation of the
+ inverse error function to compute inverse cumulative probability
+ instead of relying on a numerical solver. This is much faster,
+ more accurate and does not need convergence threshold.
+o MATH-933: Throw "MathUnsupportedOperationException" from optimizers that do
+ not support constraints (previous behaviour was to silently ignore
+ the "SimpleBounds" argument).
+o MATH-931: Greater efficiency in "UnitSphereRandomVectorGenerator". Thanks
to Sean Owen.
+
+
+For complete information on 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/
+
+
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