Added release notes for 3.6.
diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 6a6ac4e..56e8d19 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -1,4 +1,4 @@
-The Apache Commons Math team is pleased to announce the commons-math3-3.5 release!
+The Apache Commons Math team is pleased to announce the commons-math3-3.6 release!
The Apache Commons Math project is a library of lightweight, self-contained mathematics
and statistics components addressing the most common practical problems not immediately
@@ -7,27 +7,108 @@
Changes in this version include:
New features:
-o Added a way to build polyhedrons sets from a list of vertices and
- facets specified using vertices indices.
-o Simplified "FastMath#exp(double)" in order to avoid a potential
- Java 1.5 JIT bug when calling with negative infinity as argument. Issue: MATH-1198.
-o Added method "getQuadraticMean()" to "DescriptiveStatistics"
- and "SummaryStatistics" which calculates the root mean square. Issue: MATH-1199.
+o Added a RotationConvention enumerate to allow specifying the semantics
+ or axis/angle for rotations. This enumerate has two values:
+ VECTOR_OPERATOR and FRAME_TRANSFORM. Issue: MATH-1302,MATH-1303.
+o Added a field-based version of Ordinary Differential Equations framework.
+ This allows integrating ode that refer to RealField elements instead of
+ primitive double, hence opening the way to use DerivativeStructure to
+ compute partial differential without using variational equations, or to solve
+ ode with extended precision using Dfp. Issue: MATH-1288.
+o Added a nth order Brent solver for general real fields, replacing the former
+ solver that was restricted to Dfp fields only.
+o New "Range" inner class of "o.a.c.m.util.IntegerSequence". Issue: MATH-1286.
+o "AggregateSummaryStatistics" can now aggregate any kind of
+ "StatisticalSummary". Issue: MATH-837.
+o Deep copy of "Network" (package "o.a.c.m.ml.neuralnet") to allow evaluation of
+ of intermediate states during training. Issue: MATH-1278.
+o Added negative zero support in FastMath.pow. Issue: MATH-1273. Thanks to Qualtagh.
+o Various SOFM visualizations (in package "o.a.c.m.ml.neuralnet.twod.util"):
+ Unified distance matrix, hit histogram, smoothed data histograms,
+ topographic error, quantization error. Issue: MATH-1270.
+o New interfaces to be implemented by algorithms that visualizes properties
+ of a "NeuronSquareMesh2D" (package "o.a.c.m.ml.neuralnet.twod.util"). Issue: MATH-1268.
+o Reimplemented pow(double, double) in FastMath, for better accuracy in
+ integral power cases and trying to fix erroneous JIT optimization again.
+o Added a pow(double, long) method in FastMath.
+o "NeuronSquareMesh2D" (package "o.a.c.m.ml.neuralnet.twod") implements "Iterable". Issue: MATH-1265.
+o "MapUtils" (package "o.a.c.m.ml.neuralnet"): Method to sort units according to distance
+ from a given vector. Issue: MATH-1264.
+o Accessor (class "o.a.c.m.ml.neuralnet.twod.NeuronSquareMesh2D"). Issue: MATH-1263.
+o New "IntegerSequence" class (in package "o.a.c.m.util") with "Incrementor" inner class. Issue: MATH-1259.
+o "Neuron" class (package "o.a.c.m.ml.neuralnet"): added methods that can be used
+ to assess concurrency performance. Issue: MATH-1250.
+o Method "cosAngle" in "o.a.c.m.util.MathArrays". Issue: MATH-1244.
Fixed Bugs:
-o Moved FastMathTestPerformance out of the main test tree, as is is
- a benchmark rather than a test. Issue: MATH-1195.
-o Fixed ignored method parameters in QRDecomposition protected methods. Issue: MATH-1191.
-o Fixed wrong selection of line/polyhedron intersection point. Issue: MATH-1211. Thanks to Mike Zimmerman.
-o Improved fix for corner cases in BSP-tree merging, when cut sub-hyperplanes vanish. Issue: MATH-1162.
-o Fixed link to algorithm description in "PoissonDistribution#sample()". Issue: MATH-1209. Thanks to Jonathan Ogilvie.
-o EmpiricalDistribution cumulativeProbability can return NaN when evaluated within a constant bin. Issue: MATH-1208.
-o EmpiricalDistribution getKernel fails for buckets with only multiple instances of the same value. Issue: MATH-1203.
-o "UnivariateSolverUtils#bracket(...)" sometimes failed to bracket
- if a reached the lower bound. Issue: MATH-1204.
+o Improved performance and accuracy of 2-sample KolmogorovSmirnov tests. Issue: MATH-1310.
+o Detect start failures with multi-step ODE integrators. Issue: MATH-1297.
+o Fixed stability issues with Adams-Bashforth and Adams-Moulton ODE integrators.
+ The integrators did not estimate the local error properly and were sometimes
+ stuck attempting to reduce indefinitely the step size as they thought the
+ error was too high. Thanks to Julien Queyrel.
+o Increased default value for number of allowed evaluations in
+ "o.a.c.m.optim.univariate.BracketFinder". Issue: MATH-1295. Thanks to Luke Lindsay.
+o Fixed potential race condition in PolynomialUtils#buildPolynomial in
+ case polynomials are generated from multiple threads. Furthermore, the
+ synchronization is now performed on the coefficient list instead of the class. Issue: MATH-1294. Thanks to Kamil Włodarczyk.
+o Fixed FastMath.exp that potentially returned NaN for non-NaN argument. Issue: MATH-1269.
+o Updated reference in ZipfDistribution's javadoc. Issue: MATH-1285. Thanks to Pim van der Hoorn.
+o Fixed "Gamma#gamma(double)" for negative values smaller than -20. Issue: MATH-1283. Thanks to Jean Noel Delavalade.
+o Fixed javadoc of methods {floorDiv,floorMod} in class "FastMath". Issue: MATH-1237. Thanks to Ken Williams.
+o Check precondition (class "o.a.c.m.random.EmpiricalDistribution"). Issue: MATH-1279.
+o Fixed incorrect Kendall's tau coefficient calculation due to internal integer overflow. Issue: MATH-1277. Thanks to Marc Rosen.
+o Fixed split/side inconsistencies in BSP trees. Issue: MATH-1266.
+o Avoid overflow in "Fraction" (multiplication or division by an int). Issue: MATH-1261. Thanks to Osamu Ikeuchi.
+o Added check for equal array lengths to distance measure functions. Issue: MATH-1258. Thanks to Gunel Jahangirova.
+o Better accuracy in computation of cumulative probability of "NormalDistribution"
+ (package "o.a.c.m.distribution"). Issue: MATH-1257. Thanks to Bill Murphy.
+o Boundary check to construct an "Interval" (package "o.a.c.m.geometry.euclidean.oned"). Issue: MATH-1256.
+o Wrong neighbourhood size in class "KohonenUpdateAction" (package "o.a.c.m.ml.neuralnet.sofm"). Issue: MATH-1255.
+o ResizableDoubleArray constructor does not work with double array of size 1. Issue: MATH-1252. Thanks to John Bay.
+o Fixed initial value of "number of calls" counter in class "KohonenUpdateAction"
+ (package "o.a.c.m.ml.neuralnet.sofm"). Issue: MATH-1251.
+o Removed unnecessary allocations in "BigFraction" (package "o.a.c.m.fraction"). Issue: MATH-1248. Thanks to Chris Popp.
+o Fixed error in computing discrete distribution of D statistics for small-sample
+ 2-sample Kolmogorov-Smirnov tests. Error was causing incorrect p-values returned
+ by exactP and monteCarloP methods (used by default for small, mid-size samples). Issue: MATH-1245.
+o "KolmogorovSmirnovTest#ksSum(...)" returned wrong result in case the provided
+ t-parameters was zero. This affected the calculation of "approximateP(...)" for
+ identical samples. Issue: MATH-1240.
+o Improved performance to calculate the two-sample Kolmogorov-Smirnov test
+ via monte carlo simulation ("KolmogorovSmirnovTets#monteCarloP(...)"). Issue: MATH-1242. Thanks to Otmar Ertl.
+o A "StackOverflowException" was thrown when passing Double.NaN or infinity
+ to "Gamma#digamma(double)" or "Gamma#trigamma(double)". Now the input value
+ is propagated to the output if it is not a real number. Issue: MATH-1241. Thanks to Aleksei Dievskii.
+o Improved performance of calculating the two-sample Kolmogorov-Smirnov
+ test statistic. Issue: MATH-1232. Thanks to Otmar Ertl.
+o Fixed error message for unknown parameter name in ODE. Issue: MATH-1232.
+o Fixed wrong event detection in case of close events pairs. Issue: MATH-1226.
+o Fix potential branching errors in "FastMath#pow(double, double)" when
+ passing special values, i.e. infinity, due to erroneous JIT optimization.
+o Fixed equals/hashcode contract failure for Dfp. Issue: MATH-1118.
+o Fixed wrong splitting of huge number in extended accuracy algorithms. Issue: MATH-1223.
+o Improve performance of "BetaDistribution#sample()" by using Cheng's algorithm. Issue: MATH-1153. Thanks to Sergei Lebedev.
+o Computation of 2-sample Kolmogorov-Smirnov statistic in case of ties
+ was not correct. Issue: MATH-1197.
Changes:
-o Added Laguerre complex solve methods taking maxEval parameters. Issue: MATH-1213.
+o Modified 2-sample KolmogorovSmirnovTest to handle ties in sample data. By default,
+ ties are broken by adding random jitter to input data. Also added bootstrap method
+ analogous to ks.boot in R Matching package. Issue: MATH-1246.
+o Added bootstrap method to KolmogorovSmirnov test. Issue: MATH-1246.
+o Added constructors taking sample data as arguments to enumerated real and integer distributions. Issue: MATH-1287.
+o Improved performance of sampling and inverse cumulative probability calculation
+ for geometric distributions. Issue: MATH-1276.
+o Representation of Kolmogorov-Smirnov statistic as integral value. Issue: MATH-1274.
+o Faster generation of Zipf distributed random numbers by using rejection-inversion sampling. Issue: MATH-1220.
+o Improved performance of sort-in-place methods by avoiding boxing. Issue: MATH-990.
+o Refactored implementation of the "miscrosphere projection"
+ interpolation algorithm.
+ New classes: "MicrosphereProjectionInterpolator",
+ "InterpolatingMicrosphere" and "InterpolatingMicrosphere2D"
+ replace "MicrosphereInterpolator" and "MicrosphereInterpolatingFunction".
+ (package "o.a.c.m.analysis.interpolation"). Issue: MATH-1243.
Have fun!
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
index 8b7a409..90e8dc9 100644
--- a/src/changes/changes.xml
+++ b/src/changes/changes.xml
@@ -50,7 +50,33 @@
<title>Commons Math Release Notes</title>
</properties>
<body>
- <release version="3.6" date="XXXX-XX-XX" description="">
+ <release version="3.6" date="2016-01-04" 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.x JAR file.
+
+Most notable among the new features are:
+ field-based version of Ordinary Differential Equations framework,
+ numerous improvements in distributions, statistics and neuralnet packages,
+ refactored implementation of microsphere interpolation algorithm,
+ explicit specification of rotation convention to use (both vector
+ operator and frame transform conventions are now available).
+
+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).
+">
<action dev="psteitz" type="fix" issue="MATH-1310">
Improved performance and accuracy of 2-sample KolmogorovSmirnov tests.
</action>
