ojalgo/ojalgo.changes

-------------------------------------------------------------------
Wed Jan 15 00:19:43 UTC 2025 - Anton Shvetz <shvetz.anton@gmail.com>

- Update to v55.1.0
  * Added
    ~ org.ojalgo.data
      + New package org.ojalgo.data.cluster with k-means and greedy
        clustering algorithms implemented, as well as
        generalisations, specialisations and combinations of those.
      + DataProcessors now has a method Transformation2D
        newRowsTransformer(Function<SampleSet, UnaryFunction>) to
        complement the existing newColumnsTransformer.
    ~ org.ojalgo.random
      + SampleSet gained a couple of methods; getMidrange() and
        getRange().
  * Changed
    ~ org.ojalgo.array
      + Sorting is no longer parallel/multi-threaded. The previous
        implementations made use of the common ForkJoinPool.
    ~ org.ojalgo.data
      + Creating a JMX bean (to monitor throughput) with BatchNode
        is now optional, and the default is to not create them.
        (Used to always create them.)
    ~ org.ojalgo.netio
      + The FromFileReader and ToFileWriter interfaces and their
        implementations used to extend and delegate to code in the
        org.ojalgo.type.function package. Much of what was in that
        package has been moved to and merged with stuff in the
        org.ojalgo.netio package.
      + The FromFileReader.Builder and ToFileWriter.Builder
        builders now use generic "file" types. They used to be
        implemented in terms of Java's File, but can now be
        anything like Path or ojAlgo's own SegmentedFile,
        ShardedFile or InMemoryFile.
      + The DataInterpreter gained some additional standard
        interpreters, as well as utilities to convert back and
        forth between byte[].
    ~ org.ojalgo.random
      + SamleSet no longer makes use of parallel/multi-threaded
        sorting – to avoid making use of the common ForkJoinPool.
    ~ org.ojalgo.type
      + The AutoSupplier and AutoConsumer interfaces are removed.
        They used to provide abstract/generalised functionality for
        FromFileReader and ToFileWriter in the org.ojalgo.netio
        package. All features and functionality still exists, but
        in terms of the more specific/concrete FromFileReader and
        ToFileWriter. If you directly referenced any of the various
        utility methods in AutoSupplier or AutoConsumer they're now
        gone. They primarily existed so that FromFileReader and
        ToFileWriter could access them (from another package). The
        features and functionality they provided are now available
        through other classes in the org.ojalgo.netio package –
        like FromFileReader.Builder and ToFileWriter.Builder.
  * Fixed
    ~ org.ojalgo.data
      + In DataProcessors, the CENTER_AND_SCALE transformation
        didn't do exactly what the documentation said it. That's
        been fixed.
- Update to v55.0.2
  * Added
    ~ org.ojalgo.type
      + A new cache implementation named ForgetfulMap. To save you
        adding a dependency on Caffeine or similar.
    ~ org.ojalgo.optimisation
      + There is a new OptimisationService implementation with
        which you can queue up optimisation problems to have them
        solved. This service is (will be) configurable regarding
        how many problems to work on concurrently, and how many
        threads the solvers can use, among other things.
  * Changed
    ~ org.ojalgo.optimisation
      + Refactoring and additions to what's in the
        org.ojalgo.optimisation.service package. They're breaking
        changes, but most likely no one outside Optimatika used
        this.
      + Minor internal changes to how the IntegerSolver works.
        There's now an equal number of worker threads per
        worker-strategy.
  * Deprecated
    ~ org.ojalgo.type
      + TypeCache is replaced by ForgetfulMap.ValueCache.
- Update to v55.0.1
  * Added
    ~ org.ojalgo.concurrent
      + Addition to ProcessingService that simplify concurrently
        taking items from a BlockingQueue.
  * Changed
    ~ org.ojalgo.random
      + Refactored SampleSet (internally) to be better aligned with
        recent changes to other parts of the library. Primarily the
        class now uses int indices for all internal calculations.
        Also added a new java.util.stream.Collector implementation
        to simplify SampleSet creation from streams.
  * Fixed
    ~ org.ojalgo.optimisation
      + Fixed a bug where the (new) LP solver would fail to
        recognise unbounded problems and instead return a solution
        with infinite values, stating it to be optimal.

-------------------------------------------------------------------
Sun Oct  6 20:21:39 UTC 2024 - Anton Shvetz <shvetz.anton@gmail.com>

- Update to v55.0.0
  * Changed
    ~ org.ojalgo.function
      + The BigDecimal valued constants in BigMath for E, PI and
        GOLDEN_RATIO are redefined with more decimal digits.
      + The BigDecimal valued functions in BigMath for EXP, LOG,
        SIN and COS are re-implemented to produce much more
        accurate results.
    ~ org.ojalgo.optimisation
      + The new LP solver implementation is now the default
        alternative.
      + The two classes LinearSolver.GeneralBuilder and
        LinearSolver.StandardBuilder are replaced by a common
        LinearSolver.Builder. Consequently the methods
        newGeneralBuilder() and newStandardBuilder() are deprecated
        and replaced by newBuilder().
    ~ org.ojalgo.scalar
      + Re-implemented Quadruple's divide method using primitives
        only. (Previously delegated to BigDecimal.)
  * Deprecated
    ~ org.ojalgo.data
      + Everything related to downloading (historical) financial
        data is deprecated. It's already broken (due to changes in
        the external "service") and we're not going to try fix it.
  * Removed
    ~ org.ojalgo.structure
      + Removed a bunch of stuff that was deprecated in Factory1D,
        Factory2D and FactoryAnyD and/or some of their
        sub-interfaces.

-------------------------------------------------------------------
Thu Jun 13 17:18:48 UTC 2024 - Anton Shvetz <shvetz.anton@gmail.com>

- Update to v54.0.0
  * Added
    ~ org.ojalgo.matrix
      + Added the ability to specify the initial capacity of a
        SparseStore.
      + More efficient sparse to sparse copying of SparseStore.
      + New option to use a builder when initially setting the
        elements of a SparseStore.
      + When setting (or adding to) elements there used to be
        internally synchronized code. This is no longer the case.
        Instead you must call synchronised() to get a synchronized
        mutating wrapper. This should make common single threaded
        usage faster.
      + The sparse BasicMatrix builder no longer has all the
        methods that really only made sense with dense
        implementation. The sparse builder implementation changed
        to use that new SparseStore.Builder.
    ~ org.ojalgo.structure
      + There are new methods fillCompatile(...),
        modifyCompatile(...) and onCompatile(...) to complement the
        already existing "fill", "modify" and "on" methods.
        (Inspired by MATLAB's concept of compatible array sizes for
        binary operation.)
      + The factory interfaces got methods to construct instances
        of compatible sizes/shapes. (Inspired by MATLAB's concept
        of compatible array sizes for binary operation.)
  * Changed
    ~ org.ojalgo.matrix
      + The classes Primitive64Store and Primitive32Store have been
        renamed R064Store and R032Store. These classes are central
        to ojAlgo. The effect of this name change is widespread.
        ojAlgo has been transitioning to a new naming scheme over
        several versions now, but these classes were left untouched
        so far (in part because of how central they are). Now, to
        complete the work, it's done! No deprecations, just did it.
        Apart from the name change the classes are identical.
      + Vector space method like "add" and "subtract" have been
        redefined to no longer throw exceptions if dimensions are
        not equal, but instead broadcast/repeat rows or columns.
        (Inspired by MATLAB's concept of compatible array sizes for
        binary operation.)
    ~ org.ojalgo.optimisation
      + Refactored, cleaned up deprecations, primarily regarding
        how model variables are created. They can no longer be
        instantiated independent of a model. You have to first
        create the model, and then use that as the variable (and
        expression) factory.
    ~ org.ojalgo.structure
      + Refactored the builder/factory interfaces to better support
        creating immutable 1D, 2D or AnyD structures. This has
        implications for most ojAlgo data structures. There are
        deprecations in all factory classes, but everything that
        worked before still works (I believe).
      + The Structure*D, Access*D, Mutate*D and Factory*D
        interfaces have all been refactored to make working with
        int indices (rather than long) the primary alternative.
        Huge data structures, that require long indices, are still
        suported – no change in this regard. In reality only a few
        implementations actually allowed to create such large
        instances. This change is to allow all the other classes to
        be implemented using int and not bother (so much) with
        long. Users of the various classes in ojAlgo should see no
        difference. If you have created your own classes
        implementing some of ojAlgo's interfaces you will probably
        need to implement some additional methods in those classes.

-------------------------------------------------------------------
Fri May 24 09:45:31 UTC 2024 - Anton Shvetz <shvetz.anton@gmail.com>

- Update to v53.3.0
  * Added
    ~ org.ojalgo.function
      + Some additional PowerOf2 utilities.
    ~ org.ojalgo.netio
      + SegmentedFile that divides a large file in segments to
        enable reading those in parallel using memory mapped files
        (memory mapped file segments).
    ~ org.ojalgo.type
      + New primitive number parsers in NumberDefinition. They take
        CharSequence rather than String as input and do not create
        any intermediate objects. In particular the parseDouble
        performs much better than its counterpart in Double. The
        downside is that it only handles a limited plain format.
  * Changed
    ~ org.ojalgo.concurrent
      + The reduce(...) methods of ProcessingService are renamed
        (deprecated) reduceMergeable(...). In addition there are
        now also reduceCombineable(...).
    ~ org.ojalgo.data
      + The processMapped(...) method of BatchNode is renamed
        (deprecated) processMergeable(...). In addition there is
        now also processCombineable(...).
      + The reduceMapped(...) method of BatchNode is renamed
        (deprecated) reduceByMerging(...). In addition there is now
        also reduceByCombining(...).
    ~ org.ojalgo.type
      + The merge(Object) method of TwoStepMapper has been removed.
        Instead there are two new sub-interfaces
        TwoStepMapper.Mergeable and TwoStepMapper.Combineable.
- Update to v53.2.0
  * Added
    ~ org.ojalgo.data
      + There is a new package org.ojalgo.data.transform that (so
        far) contain implementations of the ZTransform and the
        DiscreteFourierTransform. Most notably ojAlgo now contains
        an implementation of the FFT algorithm.
      + ImageData has been extended with features to work with
        Fourier transforms of images, as well as a Gaussian blur
        function.
    ~ org.ojalgo.function
      + The PolynomialFunction interface now extends
        org.ojalgo.algebra.Ring which means it is now possible to
        add and multiply polynomials. There’s also been some
        refactoring of the internals of the polynomial
        implementations.
      + Two new PrimitiveFunction.Unary implementations
        PeriodicFunction and FourierSeries. It is now possible to
        take any (periodic) function and, via FFT, get a Fourier
        series approximation of it (1 method call).
    ~ org.ojalgo.scalar
      + Some minor additions to ComplexNumber. It is now possible
        to do complex number multiplication without creating new
        instances (calculate the real and imaginary parts
        separately). Added utilities to get the unit roots.

-------------------------------------------------------------------
Sat Jan 20 10:35:19 UTC 2024 - Anton Shvetz <shvetz.anton@gmail.com>

- Update to v53.1.1
  * Added
    ~ org.ojalgo.data
      + New ImageData class that wraps a
        java.awt.image.BufferedImage and implements MatrixStore.
        Further it adds a few utility methods to simplify working
        with image data - convert to grey scale, re-sample (change
        size), separate the colour channels…
    ~ org.ojalgo.matrix
      + It is now possible to create a matrix decomposition
        instance and calculate the decomposition with 1 method
        call. Previously you had to first call make on the factory
        instance and then decompose on the decomposition instance.
        Now it is possible to call decomposed directly on the
        factory instance.
      + The SingularValue interface now defines a method to
        reconstruct a matrix using a specified number of singular
        values.

-------------------------------------------------------------------
Tue Sep 26 12:29:58 UTC 2023 - Anton Shvetz <shvetz.anton@gmail.com>

- Initial packaging with v52.0.1