318 lines
15 KiB
XML
318 lines
15 KiB
XML
<?xml version="1.0"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<!--
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This file is used by the maven-changes-plugin to generate the release notes.
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Useful ways of finding items to add to this file are:
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1. Add items when you fix a bug or add a feature (this makes the
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release process easy :-).
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2. Do a bugzilla search for tickets closed since the previous release.
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3. Use the report generated by the maven-changelog-plugin to see all
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CVS commits. Set the project.properties' maven.changelog.range
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property to the number of days since the last release.
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The <action> type attribute can be add,update,fix,remove.
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-->
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<document>
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<properties>
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<title>
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Commons Math Release Notes</title>
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</properties>
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<body>
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<release version="1.2-SNAPSHOT" date="TBD">
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<action dev="luc" type="fix" issue="MATH-156" due-to="Tyler Ward">
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Use the initial guess provided by the user in BrentSolver.solve(), thus
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improving speed.
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</action>
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<action dev="luc" type="update">
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Added the estimation optimization, geometry and ode package from the
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Mantissa library.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-18" due-to="Phil Steitz">
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Made ComplexFormat format double values with a provided NumberFormat
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instance instead of using the real part format for all values.
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</action>
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<action dev="psteitz" type="update" issue="MATH-120" due-to="Todd C. Parnell">
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Added Pascal distribution implementation.
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</action>
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<action dev="psteitz" type="update" issue="MATH-148" due-to="Joni Salonen">
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Added QR Decomposition.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-60" due-to="Nhung Nnguyen">
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Modified ProperFractionFormat to reject embedded minus signs.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-151" due-to="Luc Maisonobe">
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Added a nextAfter method in MathUtils to return the next
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machine-representable number in a specified direction from a given
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floating point number. Used this to ensure that MathUtils.round does
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not return incorrect results for numbers with bad IEEE754
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representations.
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</action>
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<action dev="psteitz" type="update" issue="MATH-140" due-to="Xiaogang Zhang">
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Added Fast Fourier Transform implementation.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-85" due-to="Mark Osborn, Luc Maisonobe">
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Modified getSumSquaredErrors method in SimpleRegression to always
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return a non-negative result.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-153" due-to="Remi Arntzen">
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Corrected nextInt and nextLong to handle wide value ranges.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-166" due-to="Lukas Theussl">
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Increased default precision of Gamma and Beta functions.
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</action>
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</release>
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<release version="1.1" date="2005-12-17"
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description="This is a maintenance release containing bug fixes and enhancements.
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All API changes are binary compatible with version 1.0. The enhancements
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include some new probability distributions, a Fraction class, new matrix
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and numerical utilities, and a PRNG pluggability framework making it
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possible to replace the JDK-supplied random number generator in
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commons-math (and elsewhere) with alternative PRNG implementations.">
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<action dev="psteitz" type="fix" issue="MATH-74">
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Made NewtonSolver derivative field transient and implemented readObject to
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initialize.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Made sampleStats field private and changed getUpperBounds to return a fresh
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copy in EmpiricalDistributionImpl.
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</action>
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<action dev="psteitz" type="update">
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Added polar2Complex method to ComplexUtils to create Complex numbers
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from polar representations.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-49" due-to="Elliotte Harold">
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Made all serialVersionUIDs private.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-5">
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Improved documentation and test cases related to handling of infinite
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and NaN values in Complex, ComplexUtils classes.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-57" due-to="Mauro Talevi">
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Fixed incorrect NaN handling in o.a.m.s.d.rank.Min, Max
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Changed RealMatrixImpl.equals to use Double.doubleToLongBits to compare
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corresponding matrix entries.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Eliminated floating point equals comparison in Percentile.evaluate.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Eliminated unnecessary assignment statements in Skewness.getResult
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method.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Synchronized getters in ResizeableDoubleArray.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Eliminated unnecessary assignment statement in BisectionSolver.solve
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method.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-74">
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Implemented hashCode in the Complex class and changed the semantics of
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equals to make all instances with real or imaginary part NaN equal.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-12" due-to="Keith McDonald">
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Fixed bin index overflow problem in EmpiricalDistributionImpl.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-108" due-to="Xiaogang Zhang">
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Added protection against numerical overflow and underflow in the
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isBracketing method.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-47" due-to="Nikhil Gupte">
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Fixed division by zero error in rounding methods.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-100" due-to="Mike Hu">
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Added upper tail cumulative probability method to HypergeometricDistributionImpl.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-22" due-to="Xiaogang Zhang">
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Added better handling of numerical overflow and division by zero in
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Complex calculations.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-92" due-to="Mikael Weigelt">
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Changed ContinuedFraction to better handle infinite convergents that
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resulted in divergent continued fraction evaluations.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-32" due-to="Srinivas Vemury">
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Changed rounding methods to not rely on BigDecimal conversions which
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was causing numerical error.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-3" due-to="Jörg Weimar">
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Changed Fraction(double) to correctly handle near-integral arguments.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-143" due-to="Jörg Weimar">
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Changed lcm to throw ArithmeticException (instead of returning bogus
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value) if the result is too large to store as an integer.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-70" due-to="Mary Ellen Foster">
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Added factories for TTest, ChiSquareTest and TestUtils class with
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static methods to create instances and execute tests.
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</action>
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<action dev="psteitz" type="update" issue="MATH-95" due-to="Paul Field">
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Eliminated repeated endpoint function evalutations in BrentSolver, SecantSolver.
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</action>
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<action dev="psteitz" type="update" issue="MATH-137" due-to="Rodrigo di Lorenzo Lopes">
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Added setSubMatrix methods to RealMatrixImpl, BigMatrixImpl. To
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Preserve backward compatibility with version 1.0, these methods were
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not added to the RealMatrix, BigMatrix interfaces.
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</action>
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<action dev="psteitz" type="update">
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Added createXIdentityMatrix methods to MatrixUtils and deprecated
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getIdentity methods in RealMatrixImpl, BigMatrixImpl.
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Modified RealMatrixImpl, BigMatrixImpl constructors to throw
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IllegalArgumentExceptions instead of ArrayIndexOutOfBounds when
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dimension arguments are not positive.
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</action>
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<action dev="psteitz" type="update">
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Made PRNG pluggable for classes in the random package. Added
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RandomGenerator interface extracted from java.util.random and abstract
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implementation, AbstractRandomGenerator providing default
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implementations of methods based on nextDouble(). Added a constructor
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taking a RandomGenerator as an argument to RandomDataImpl. Changed
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ValueServer to use a RandomData in its constructor. Changes to
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1.0 classes should be backward compatible (including serialization).
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</action>
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<action dev="psteitz" type="update" due-to="C. Scott Ananian">
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Added utility methods for overflow-checked integer arithmetic and
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improved gcd method in MathUtils.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-79" due-to="Gilles Gaillard">
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Fixed error in TTestImpl.homoscedasticTtest. Implementation was
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incorrectly using heteroscedastic t statistic. Also improved
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sensitivity of test cases.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-44" due-to="Gilles Gaillard">
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Fixed javadoc errors. One-sided t-test significance adjustment was
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reversed in javadoc for boolean-valued test methods.
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</action>
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<action dev="brentworden" type="fix" due-to="Ben Litchfield">
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Fixed bug in PolynomialSplineFunction to allow evaluation of the
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function at the last knot point.
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</action>
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<action dev="brentworden" type="add">
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Added Weibull distribution implementation.
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</action>
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<action dev="brentworden" type="add">
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Added Cauchy distribution implementation.
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</action>
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<action dev="brentworden" type="add">
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Added convenience methods for rounding.
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</action>
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<action dev="brentworden" type="add" due-to="C. Scott Ananian">
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Added Fraction class based on commons-lang implementation. With the
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fraction class, FractionFormat and ProperFractionFormat classes were
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added to provide fraction formatting and parsing.
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</action>
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</release>
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<release version="1.0" date="2004-12-06"
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description="Jakarta Commons Math 1.0 - General Availability Release">
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<action dev="psteitz" type="fix" due-to="Hans van der Heijden"
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issue="MATH-24">
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Fixed error in ChiSquareTestImpl. Tables containing zeros were
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(incorrectly) causing IllegalArgumentExceptions to be thrown.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-4">
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Removed JDK 1.4-dependent code from CertifiedDataAbstractTest,
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InvalidMatrixException and MatrixIndexException. Also dropped
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BeanTransformer, BeanTransformerTest from the release.
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</action>
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</release>
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<release version="1.0-RC2" date="2004-11-07"
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description="Jakarta Commons Math 1.0 - Release Candidate 2">
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<action dev="psteitz" type="fix">
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Fixed cumulative frequency and cumulative percentage problem reported
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to the commons-dev list by Jon Langlois on 9/14. Integer arguments to
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getCumXxx were always returning 0 due to type conversion problems.
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</action>
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<action dev="brentworden" type="fix" issue="MATH-63">
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Fixed locale-dependency in ComplexFormat.
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</action>
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<action dev="psteitz" type="update">
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Renamed univariate package to descriptive and multivariate to
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regression.
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</action>
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<action dev="psteitz" type="update" due-to="Ken Geis" issue="MATH-14">
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Improved efficiency of logGamma method in o.a.c.m.special.Gamma
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</action>
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<action dev="psteitz" type="update" due-to="Kim van der Linde"
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issue="MATH-122">
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Added subMatrix and matrix-valued row and column accessor methods to
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RealMatrix, BigMatrix interfaces and RealMatrixImpl, BigMatrixImpl.
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</action>
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<action dev="psteitz" type="update">
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Implemented equals and hashCode in RealMatrixImpl and BigMatrixImpl.
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</action>
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<action dev="psteitz" type="fix">
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Fixed RealMatrixImpl, BigMatrixImpl toString methods to handle empty
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matrix.
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</action>
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<action dev="psteitz" type="update">
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Added support for "population" variance and standard deviation in
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Variance (resp. StandardDeviation) classes.
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</action>
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<action dev="psteitz" type="update">
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Removed data mutators from RealMatrix, BigMatrix interfaces and
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RealMatrixImpl, BigMatrixImpl. RealMatrix and BigMatrix instances
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are now immutable.
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</action>
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<action dev="psteitz" type="update">
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Added MatrixUtils class, including static factory methods to create
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RealMatrix and BigMatrix instances from arrays of various types.
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</action>
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<action dev="psteitz" type="fix" due-to="Fredrik Norin" issue="MATH-28">
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Changed factorial methods to return 1 for argument = 0, instead of
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(incorrectly) throwing IllegalArgumentException.
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</action>
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<action dev="psteitz" type="fix" due-to="Kim van der Linde"
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issue="MATH-109">
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Fixed error in SimpleRegression.getSignificance. Value returned was
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off by a factor of 2 (did not match javadoc).
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</action>
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<action dev="psteitz" type="update">
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Refactored distribution package so that mixed distributions and
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discrete distributions with non-integer values can be represented.
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Added Distribution base interface as well as IntegerDistribution
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extending DiscreteDistribution. Previously existing discrete
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distributions now implement IntegerDistribution.
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</action>
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<action dev="psteitz" type="update" due-to="Fredrik Norin" issue="MATH-35">
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Added Poisson distribution implementation.
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</action>
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<action dev="psteitz" type="fix" issue="MATH-45">
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Eliminated unecessary array copy operations in RealMatrixImpl,
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BigMatrixImpl add, multiply, solve and subtract operations.
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</action>
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</release>
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<release version="1.0-RC1" date="2004-09-07"
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description="Jakarta Commons Math 1.0 - Release Candidate 1
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This is the first release of Commons Math. Commons Math is a library
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of lightweight, self-contained mathematics and statistics components.
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The release candidate is being made available so that users can test
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the release and provide feedback.">
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</release>
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</body>
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</document>
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