162 lines
6.4 KiB
Plaintext
162 lines
6.4 KiB
Plaintext
|
|
Apache Commons Math Version 1.2-RC2
|
|
RELEASE NOTES
|
|
|
|
|
|
This release combines bug fixes and new features. Most notable among the new
|
|
features are the estimation, optimization, geometry and ode packages added
|
|
from the Mantissa library. Implementations of fast Fourier transform, QR
|
|
decomposition and several numerical integration algorithms have also been
|
|
added, along with enhancements and extensions to packages included in Commons
|
|
Math 1.1. This release is source and binary compatible with earlier versions
|
|
of Commons Math.
|
|
|
|
For more information on Apache Commons Math, see
|
|
http://commons.apache.org/math/
|
|
|
|
|
|
SUMMARY OF CHANGES
|
|
|
|
ADDITIONS
|
|
|
|
* Added the estimation, optimization, geometry and ode packages from the
|
|
Mantissa library.
|
|
|
|
* MATH-120. Added Pascal distribution implementation. Thanks to Todd C.
|
|
Parnell.
|
|
|
|
* MATH-148. Added QR Decomposition. Thanks to Joni Salonen.
|
|
|
|
* MATH-140. Added Fast Fourier Transform implementation. Thanks to Xiaogang
|
|
Zhang.
|
|
|
|
* MATH-173. Added one-way ANOVA implementation. Thanks to Bob MacCallum.
|
|
|
|
* Added an angle normalization method in MathUtils to force angles in some
|
|
user-defined interval
|
|
|
|
* Added vectorial covariance computation (either sample or population
|
|
covariance)
|
|
|
|
* Added multivariate summary statistics.
|
|
|
|
|
|
BUG FIXES
|
|
|
|
* Fixed numerous warnings in test code.
|
|
|
|
* MATH-156. Use the initial guess provided by the user in
|
|
BrentSolver.solve(), thus improving speed. Thanks to Tyler Ward.
|
|
|
|
* MATH-18. Made ComplexFormat format double values with a provided
|
|
NumberFormat instance instead of using the real part format for all values.
|
|
Thanks to Phil Steitz.
|
|
|
|
* MATH-60. Modified ProperFractionFormat to reject embedded minus signs.
|
|
Thanks to Nhung Nnguyen.
|
|
|
|
* MATH-151. Added a nextAfter method in MathUtils to return the next
|
|
machine-representable number in a specified direction from a given floating
|
|
point number. Used this to ensure that MathUtils.round does not return
|
|
incorrect results for numbers with bad IEEE754 representations. Thanks to
|
|
Luc Maisonobe.
|
|
|
|
* MATH-85. Modified getSumSquaredErrors method in SimpleRegression to always
|
|
return a non-negative result. Thanks to Mark Osborn, Luc Maisonobe.
|
|
|
|
* MATH-153. Corrected nextInt and nextLong to handle wide value ranges.
|
|
Thanks to Remi Arntzen.
|
|
|
|
* MATH-166. Increased default precision of Gamma and Beta functions. Thanks
|
|
to Lukas Theussl.
|
|
|
|
* MATH-167. Modified NormalDistributionImpl.cumulativeProbablity to catch
|
|
MaxIterationsExceededException and return 0 or 1, resp. if the argument is
|
|
more than 20 standard deviations from the mean.
|
|
|
|
* MATH-174. Changed Mean.evaluate() to use a two-pass algorithm, improving
|
|
accuracy by exploiting the the fact that this method has access to the full
|
|
array of data values.
|
|
|
|
* MATH-175. Added check and rescaling of expected counts to sum to sum of
|
|
expected counts if necessary in ChiSquare test. Thanks to Carl Anderson.
|
|
|
|
* MATH-164. Handle multiplication of Complex numbers with infinite parts
|
|
specially.
|
|
|
|
* MATH-182. Add integer overflow checks in Fraction constructor using double
|
|
parameter.
|
|
|
|
* MATH-185. Throw EOFException when using empty files with ValueServer in
|
|
replay and digest modes.
|
|
|
|
* MATH-184. Fixed AbstractIntegerDistribution cumulativeProbablility(-,-) to
|
|
correctly handle double arguments. Thanks to Yegor Bryukhov.
|
|
|
|
|
|
UPDATES
|
|
|
|
* MATH-158. Added log function to MathUtils. Thanks to Hasan Diwan.
|
|
|
|
* MATH-160. Added two sample (binned comparison) ChiSquare test. Thanks to
|
|
Matthias Hummel.
|
|
|
|
* MATH-170. Added SynchronizedDescriptiveStatistics class. Thanks to David J.
|
|
M. Karlsen.
|
|
|
|
* MATH-154. Added addAndCheck, mulAndCheck, and subAndCheck MathUtils methods
|
|
for long integer arguments. Thanks to Remi Arntzen.
|
|
|
|
* MATH-171. Merged most functions from ComplexUtils into Complex class, added
|
|
static factory method to Complex. Thanks to Niall Pemberton.
|
|
|
|
* Deprecated abstract factory methods and made DescriptiveStatistics and and
|
|
SummaryStatistics concrete classes. Pushed implementations up from
|
|
DescriptiveStatisticsImpl, SummaryStatisticsImpl. Made implementations of
|
|
statistics configurable via setters.
|
|
|
|
* MATH-176. Add errors guessing to least-squares estimators. Thanks to
|
|
Kazuhiro Koshino.
|
|
|
|
* MATH-179. Add tests for Fraction constructor using double parameter. Thanks
|
|
to Niall Pemberton.
|
|
|
|
* MATH-181. Add Fraction constructor using max denominator value. Thanks to
|
|
Niall Pemberton.
|
|
|
|
* Added a equals and hash methods in MathUtils to check for double arrays
|
|
|
|
* MATH-191. Added getSumOfLogs method to SummaryStatistics and made SumOfLogs
|
|
instance used by GeometricMean configurable.
|
|
|
|
* MATH-188. Made numerator and denominator final in Fraction and deprecated
|
|
protected real and imaginary parts fields in Complex, making Fraction
|
|
immutable and preparing Complex to become fully immutable in 2.0. Thanks to
|
|
Sebastian Bazley.
|
|
|
|
DEPRECATIONS SUMMARY
|
|
|
|
* The abstract factory pattern used to enable pluggable implementations in the
|
|
statistics, analysis and distributions packages has been deprecated and
|
|
replaced by setter injection.
|
|
|
|
* Non-localized exception messages and associated constructors have been
|
|
deprecated and replaced by localized versions.
|
|
|
|
* Most methods from the ComplexUtils class have been deprecated, with
|
|
implementations moved to the Complex class.
|
|
|
|
See "clirr-report.html" included in the docs directory of the binary
|
|
distribution for a detailed list of API changes. The "errors" reported at the
|
|
top of the report are due to protected fields being moved to superclasses.
|
|
These fields are still available, so there is no backward compatibility issue.
|
|
|
|
BUILDING COMMONS MATH
|
|
|
|
Commons math can be built from the source distribution using Maven 1, Maven 2,
|
|
or Ant, launching any one of these from the top-level directory of the unpacked
|
|
zip or tarball. For detailed build instructions and information about how to
|
|
contribute to Commons Math, see "developers.html" in the docs directory of the
|
|
binary distribution.
|
|
|