0.5.0 - 2026-01-09

Added

• More statistics functions by @qwazer
• Fit accessors with Attribute

Changed

• Flag attributes are replaced with boolean attributes to properly support missing values
• Upgrade tensorflow version to 1.0.0

Removed

• Support for ND4J

0.4.2 - 2025-01-27

Added

• Convenient matrix builders for rows, columns, vstacks and hstacks
• Sparse matrix builder

Fixed

• Ojalgo conversion bug which made all converted matrices be zero.

0.4.1 - 2025-01-12

Added

• Metropolis-Hastings sampler
• Ojalgo LinearSpace implementation.

Changed

• attributes-kt moved to a separate project, and the version used is 0.3.0
• Kotlin 2.1. Now use cross-compilation to deploy macOS targets.
• Changed origin to cmMatrix in kmath-commons to avoid property name clash. Expose bidirectional conversion in CMLinearSpace
• (BREAKING CHANGE) Changed implementations in kmath-ejml to match CM and ojalgo style. Specifically, provide bidirectional conversion for library types.

Fixed

• (BREAKING CHANGE) Fix EJML to properly treat vectors as columns

0.4.0 - 2024-02-18

Added

• Reification. Explicit SafeType for algebras.
• Integer division algebras.
• Float32 geometries.
• New Attributes-kt module that could be used as stand-alone. It declares. type-safe attributes containers.
• Explicit mutableStructureND builders for mutable structures.
• Buffer.asList() zero-copy transformation.
• Wasm support.
• Parallel implementation of LinearSpace for Float64
• Parallel buffer factories

Changed

• Buffer copy removed from API (added as an extension).
• Default naming for algebra and buffers now uses IntXX/FloatXX notation instead of Java types.
• Remove unnecessary inlines in basic algebras.
• QuaternionField -> QuaternionAlgebra and does not implement Field anymore since it is non-commutative
• kmath-geometry is split into euclidean2d and euclidean3d
• Features replaced with Attributes.
• Transposed refactored.
• Kmath-memory is moved on top of core.

Deprecated

• ND4J engine

Removed

• asPolynomial function due to scope pollution
• Codegend for ejml (450 lines of codegen for 1000 lines of code is too much)

Fixed

• Median statistics
• Complex power of negative real numbers
• Add proper mutability for MutableBufferND rows and columns
• Generic Float32 and Float64 vectors are used in geometry algebras.

What's Changed

• Added Levenberg-Marquardt algorithm and svd Golub-Kahan by @margarita0303 in https://github.com/SciProgCentre/kmath/pull/513
• Update/Add copyright comments. Regenerate code for kmath-ejml. by @SPC-code in https://github.com/SciProgCentre/kmath/pull/522
• 0.4.0 by @SPC-code in https://github.com/SciProgCentre/kmath/pull/529
• Draft: STUD-7: Metropolis-Hastings sampler implementation by @Vasilev-Ilya in https://github.com/SciProgCentre/kmath/pull/533
• Move ND4J dependencies to libs.versions.toml, API dump in kmath-nd4j by @CommanderTvis in https://github.com/SciProgCentre/kmath/pull/535
• Add "min" and "max" statistics implemented as ExtremeValueStatistic by @qwazer in https://github.com/SciProgCentre/kmath/pull/541
• Fix transposed in mutlik algebra. by @SPC-code in https://github.com/SciProgCentre/kmath/pull/543

New Contributors

• @Vasilev-Ilya made their first contribution in https://github.com/SciProgCentre/kmath/pull/533

Full Changelog: https://github.com/SciProgCentre/kmath/compare/v0.3.1...v0.5.0