it is MUCH faster than the previous one especially for large
numbers of digits and allows quicker loading of the class.
It was tested to compute about 10000 decimal digits, just for the fun
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@995989 13f79535-47bb-0310-9956-ffa450edef68
regression models are estimated with intercept terms. Prior to the fix for this issue,
newXSampleData(double[][]), newSampleData(double[], double[][]) and
newSampleData(double[], double[][], double[][]) all required columns of "1's"
to be inserted into the x[][] arrays to create a model with an intercept term;
while newSampleData(double[], int, int) created a model including an intercept
term without requiring the unitary column. All methods have been changed to
eliminate the need for users to add unitary columns to specify regression models.
* Improved javadoc
* Improved tests
JIRA: MATH-411
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@993574 13f79535-47bb-0310-9956-ffa450edef68
Reverted to the original version of the convergence checker (using only the
previous and current best points).
"LevenberMarquardtOptimizer": Removed setters (control parameters must be
set at construction). Added a contructor.
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@992976 13f79535-47bb-0310-9956-ffa450edef68
The Dfp class represent the high precision numbers, it implements our existing Field interface and hence each instance is associated with a DfpField that provides the constants at the required precision as well as factory methods. This allowed to remove the compile-time constraint in the library. Users can even use at the same time a field for 20 decimals digits precision and another field for 100 digits precision. Dfp instances with different precision CANNOT be mixed in the same computation (doing so creates a NaN). A few utility methods have been added, like constructors from integral types, isInfinite and isNaN methods, equal has been renames to equals and its signature changed to match the general Object method (a hashcode method has been added too).
JIRA: MATH-412
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@992697 13f79535-47bb-0310-9956-ffa450edef68
Overhaul of the "optimization" package.
Removed lots of duplicate code.
Removed methods referring to the concept of "iteration".
Removed interface methods to access the number of evaluations of the
gradient and Jacobian.
Removed all references to "OptimizationException" (replaced by
"ConvergenceException").
Javadoc comments updated.
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@990792 13f79535-47bb-0310-9956-ffa450edef68
Created "NullArgumentException" (subclass of "MathIllegalArgumentException").
Changed all occurrences of "createIllegalArgumentException" (in "MathRuntime")
to throw the new exception whenever a "null" is not allowed. Added a few
checks for null in "BigFraction.java".
Simplified "LocalizedFormats" enum.
Changed "ZeroNotAllowedException" to "ZeroException".
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@982950 13f79535-47bb-0310-9956-ffa450edef68
removed one redundant function evaluation.
Line search relative tolerance explicitly set in the optimizer instance
created in "PowellOptimizerTest".
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@982639 13f79535-47bb-0310-9956-ffa450edef68
"MathUnsupportedOperationException". Replaced factory method
"createUnsupportedOperationException" occurences by an explicit
construction of a "MathUnsupportedOperationException".
Corrected a bug (in "AbstractRealVector") where a "dimension"
was stored in a "double". Replaced a "createIllegalArgumentException"
by a "DimensionMismatchException".
Removed checks for "null" in "BigFraction".
git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@982526 13f79535-47bb-0310-9956-ffa450edef68
Dimitri Pourbaix
Phil Steitz
Luc Maisonobe
Gilles Sadowski
William Barker