diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt index 297562b1e..14e603453 100644 --- a/RELEASE-NOTES.txt +++ b/RELEASE-NOTES.txt @@ -1,26 +1,77 @@ - - Apache Commons Math 3.1.1 RELEASE NOTES - -The Commons Math team is pleased to announce the release of commons-math3-3.1.1 +The Commons Math team is pleased to announce the commons-math3-3.2 release! 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 point release: It fixes a bug that renders version 3.1 unusable - in some situations (see details below). - Changes in this version include: +New features: +o Added Multivariate Normal Mixture Model Fitting by Expectation Maximization. Issue: MATH-817. Thanks to Jared Becksfort. +o Added a way to trigger only increasing or decreasing events in ODE integration. Issue: MATH-811. +o Added array-scaling methods to MathArrays. Issue: MATH-946. Thanks to Jared Becksfort. +o Added the Lévy distribution. Issue: MATH-460. Thanks to Andrew Waterman. +o Implementations for inverse error function and inverse complementary + error functions have been added. Issue: MATH-948. +o Added utilities for prime numbers. Issue: MATH-845. Thanks to Sébastien Riou. +o Check bounds in multi-start vector optimizers. Issue: MATH-914. +o Added discrete distributions. Issue: MATH-941. 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-924: Added a (minimal) "DiagonalMatrix" implementation, such that the - case of a large number of uncorrelated observations is handled - efficiently. +o Fixed inverse cumulative probability for uniform distribution. Issue: MATH-957. Thanks to Evan Ward. +o "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. Issue: MATH-891. +o Fixed Complex.reciprocal() for zero argument. Issue: MATH-934. +o AbstractRealMatrix will now check for rectangular input arrays in + its copySubMatrix methods. Issue: MATH-862. +o Increment iteration counter in optimization algorithms. Issue: MATH-949. +o Fixed missing update in ODE event handlers, when a RESET_STATE is triggered. Issue: MATH-950. +o Fixed infinite loop when NaN occurs in singular value decomposition. Issue: MATH-947. +o Extended ranges for FastMath performance tests. Issue: MATH-580. +o Finalized implementation of diagonal matrix. Issue: MATH-925. +o Added rank revealing QR decomposition. Issue: MATH-630. Thanks to Christopher Nix. +o ArrayFieldVector can now be constructed from any FieldVector. Issue: MATH-570. Thanks to Arne Plöse. +o Improved checking of null vector elements. Issue: MATH-861. Thanks to Sébastien Brisard. +o Fixed generation of long random numbers between two bounds. Issue: MATH-936. +o Fixed creation of generic array. Issue: MATH-942. Thanks to Piotr Wydrych. +o Fixed abstract test class naming that broke ant builds. Issue: MATH-940. Thanks to Piotr Wydrych. +o Allow covariance to be computed for one-dimensional variables. Issue: MATH-939. Thanks to Piotr Wydrych. +o Fixed accuracy of 3D Line.revert(). Issue: MATH-938. +o Improved javadoc to explain how switching functions should + behave across events in ODE events detection. Issue: MATH-937. +o Fixed DerivativeStructure.atan2 for special cases when both arguments are +/-0. Issue: MATH-935. +o Improved class javadoc wrt convergence criteria and added + additional constructors to override the default epsilon and cut-off + values in class "SimplexSolver". Issue: MATH-930. +o Fixed truncated value in "MultivariateNormalDistribution". Issue: MATH-929. Thanks to Piotr Wydrych. +o Made "BitStreamGenerator" implement the "Serializable" interface. Issue: MATH-927. Thanks to Dennis Hendriks. + +Changes: +o Replaced hard-coded numbers in "LevenbergMarquardtOptimizer". Issue: MATH-956. +o Fixed loading of test file when path contains a space. Issue: MATH-955. Thanks to Evan Ward. +o Improved speed of FastMath.abs methods for all signatures, by removing branching. Issue: MATH-954. Thanks to Charles Cooper. +o Improved speed of several FastMath methods. Issue: MATH-953. Thanks to Charles Cooper. +o Improved speed of FastMath copysign methods. Issue: MATH-951. Thanks to Charles Cooper. +o Made EmpiricalDisribution smoothing kernel pluggable. Issue: MATH-671. +o Allow direct use of SummaryStatistics in one-way ANOVA. Issue: MATH-877. 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 Throw "MathUnsupportedOperationException" from optimizers that do + not support constraints (previous behaviour was to silently ignore + the "SimpleBounds" argument). Issue: MATH-933. +o Greater efficiency in "UnitSphereRandomVectorGenerator". Issue: MATH-931. 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/math/ - +Have fun! +-Commons Math team diff --git a/src/site/xdoc/download_math.xml b/src/site/xdoc/download_math.xml index 923f21893..3618630b3 100644 --- a/src/site/xdoc/download_math.xml +++ b/src/site/xdoc/download_math.xml @@ -95,32 +95,32 @@ limitations under the License.

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