Preparing 3.2 release.
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1462506 13f79535-47bb-0310-9956-ffa450edef68
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Luc Maisonobe
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Apache Commons Math 3.1.1 RELEASE NOTES
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The Commons Math team is pleased to announce the release of commons-math3-3.1.1
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The Commons Math team is pleased to announce the commons-math3-3.2 release!
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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.
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This is a point release: It fixes a bug that renders version 3.1 unusable
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in some situations (see details below).
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Changes in this version include:
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New features:
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o Added Multivariate Normal Mixture Model Fitting by Expectation Maximization. Issue: MATH-817. Thanks to Jared Becksfort.
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o Added a way to trigger only increasing or decreasing events in ODE integration. Issue: MATH-811.
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o Added array-scaling methods to MathArrays. Issue: MATH-946. Thanks to Jared Becksfort.
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o Added the Lévy distribution. Issue: MATH-460. Thanks to Andrew Waterman.
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o Implementations for inverse error function and inverse complementary
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error functions have been added. Issue: MATH-948.
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o Added utilities for prime numbers. Issue: MATH-845. Thanks to Sébastien Riou.
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o Check bounds in multi-start vector optimizers. Issue: MATH-914.
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o Added discrete distributions. Issue: MATH-941. Thanks to Piotr Wydrych.
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o Added Hermite interpolator for RealFieldElement instances.
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o Added RealFieldElement interface to represent anything that is
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real number like, implemented by both Decimal64, Dfp and DerivativeStructure.
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o Added partial derivatives computation for 3D vectors and rotations.
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o Added accurate linear combination of DerivativeStructure instances,
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avoiding cancellation.
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o Added conversion of gradients and Hessians from spherical to Cartesian
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coordinates in 3D.
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Fixed Bugs:
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o MATH-924: Added a (minimal) "DiagonalMatrix" implementation, such that the
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case of a large number of uncorrelated observations is handled
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efficiently.
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o Fixed inverse cumulative probability for uniform distribution. Issue: MATH-957. Thanks to Evan Ward.
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o "SpearmansCorrelation" now works correctly in case of a provided
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"NaturalRanking" with a "NaNStrategy.REMOVED" strategy and the input
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data contains NaN values. From version 4.0 onwards this strategy will
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not be supported anymore. Issue: MATH-891.
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o Fixed Complex.reciprocal() for zero argument. Issue: MATH-934.
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o AbstractRealMatrix will now check for rectangular input arrays in
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its copySubMatrix methods. Issue: MATH-862.
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o Increment iteration counter in optimization algorithms. Issue: MATH-949.
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o Fixed missing update in ODE event handlers, when a RESET_STATE is triggered. Issue: MATH-950.
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o Fixed infinite loop when NaN occurs in singular value decomposition. Issue: MATH-947.
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o Extended ranges for FastMath performance tests. Issue: MATH-580.
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o Finalized implementation of diagonal matrix. Issue: MATH-925.
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o Added rank revealing QR decomposition. Issue: MATH-630. Thanks to Christopher Nix.
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o ArrayFieldVector can now be constructed from any FieldVector. Issue: MATH-570. Thanks to Arne Plöse.
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o Improved checking of null vector elements. Issue: MATH-861. Thanks to Sébastien Brisard.
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o Fixed generation of long random numbers between two bounds. Issue: MATH-936.
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o Fixed creation of generic array. Issue: MATH-942. Thanks to Piotr Wydrych.
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o Fixed abstract test class naming that broke ant builds. Issue: MATH-940. Thanks to Piotr Wydrych.
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o Allow covariance to be computed for one-dimensional variables. Issue: MATH-939. Thanks to Piotr Wydrych.
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o Fixed accuracy of 3D Line.revert(). Issue: MATH-938.
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o Improved javadoc to explain how switching functions should
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behave across events in ODE events detection. Issue: MATH-937.
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o Fixed DerivativeStructure.atan2 for special cases when both arguments are +/-0. Issue: MATH-935.
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o Improved class javadoc wrt convergence criteria and added
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additional constructors to override the default epsilon and cut-off
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values in class "SimplexSolver". Issue: MATH-930.
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o Fixed truncated value in "MultivariateNormalDistribution". Issue: MATH-929. Thanks to Piotr Wydrych.
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o Made "BitStreamGenerator" implement the "Serializable" interface. Issue: MATH-927. Thanks to Dennis Hendriks.
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Changes:
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o Replaced hard-coded numbers in "LevenbergMarquardtOptimizer". Issue: MATH-956.
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o Fixed loading of test file when path contains a space. Issue: MATH-955. Thanks to Evan Ward.
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o Improved speed of FastMath.abs methods for all signatures, by removing branching. Issue: MATH-954. Thanks to Charles Cooper.
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o Improved speed of several FastMath methods. Issue: MATH-953. Thanks to Charles Cooper.
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o Improved speed of FastMath copysign methods. Issue: MATH-951. Thanks to Charles Cooper.
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o Made EmpiricalDisribution smoothing kernel pluggable. Issue: MATH-671.
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o Allow direct use of SummaryStatistics in one-way ANOVA. Issue: MATH-877. Thanks to Peter Andrews.
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o Normal distribution now uses a direct implementation of the
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inverse error function to compute inverse cumulative probability
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instead of relying on a numerical solver. This is much faster,
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more accurate and does not need convergence threshold.
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o Throw "MathUnsupportedOperationException" from optimizers that do
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not support constraints (previous behaviour was to silently ignore
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the "SimpleBounds" argument). Issue: MATH-933.
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o Greater efficiency in "UnitSphereRandomVectorGenerator". Issue: MATH-931. Thanks to Sean Owen.
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For complete information on Commons Math, including instructions on how to submit bug reports,
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patches, or suggestions for improvement, see the Apache Commons Math website:
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http://commons.apache.org/math/
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Have fun!
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-Commons Math team
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@ -95,32 +95,32 @@ limitations under the License.
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</p>
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</subsection>
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</section>
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<section name="Commons Math 3.1 (requires Java 1.5+)">
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<section name="Commons Math 3.2 (requires Java 1.5+)">
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<subsection name="Binaries">
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<table>
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<tr>
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<td><a href="[preferred]/commons/math/binaries/commons-math3-3.1-bin.tar.gz">commons-math3-3.1-bin.tar.gz</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.1-bin.tar.gz.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.1-bin.tar.gz.asc">pgp</a></td>
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<td><a href="[preferred]/commons/math/binaries/commons-math3-3.2-bin.tar.gz">commons-math3-3.2-bin.tar.gz</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.2-bin.tar.gz.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.2-bin.tar.gz.asc">pgp</a></td>
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</tr>
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<tr>
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<td><a href="[preferred]/commons/math/binaries/commons-math3-3.1-bin.zip">commons-math3-3.1-bin.zip</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.1-bin.zip.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.1-bin.zip.asc">pgp</a></td>
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<td><a href="[preferred]/commons/math/binaries/commons-math3-3.2-bin.zip">commons-math3-3.2-bin.zip</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.2-bin.zip.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/binaries/commons-math3-3.2-bin.zip.asc">pgp</a></td>
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</tr>
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</table>
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</subsection>
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<subsection name="Source">
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<table>
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<tr>
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<td><a href="[preferred]/commons/math/source/commons-math3-3.1-src.tar.gz">commons-math3-3.1-src.tar.gz</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.1-src.tar.gz.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.1-src.tar.gz.asc">pgp</a></td>
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<td><a href="[preferred]/commons/math/source/commons-math3-3.2-src.tar.gz">commons-math3-3.2-src.tar.gz</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.2-src.tar.gz.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.2-src.tar.gz.asc">pgp</a></td>
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</tr>
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<tr>
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<td><a href="[preferred]/commons/math/source/commons-math3-3.1-src.zip">commons-math3-3.1-src.zip</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.1-src.zip.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.1-src.zip.asc">pgp</a></td>
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<td><a href="[preferred]/commons/math/source/commons-math3-3.2-src.zip">commons-math3-3.2-src.zip</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.2-src.zip.md5">md5</a></td>
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<td><a href="http://www.apache.org/dist/commons/math/source/commons-math3-3.2-src.zip.asc">pgp</a></td>
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</tr>
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</table>
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</subsection>
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