kmath/CHANGELOG.md

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# KMath
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## Unreleased
### Added
- Metropolis-Hastings sampler
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### Changed
### Deprecated
### Removed
### Fixed
### Security
## 0.4.0-dev-3 - 2024-02-18
### Added
- Reification. Explicit `SafeType` for algebras.
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- 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.
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- `Buffer.asList()` zero-copy transformation.
- Wasm support.
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- Parallel implementation of `LinearSpace` for Float64
- Parallel buffer factories
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### Changed
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- Buffer copy removed from API (added as an extension).
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- Default naming for algebra and buffers now uses IntXX/FloatXX notation instead of Java types.
- Remove unnecessary inlines in basic algebras.
2023-08-12 13:16:18 +03:00
- 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.
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- Kmath-memory is moved on top of core.
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### Deprecated
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- ND4J engine
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### Removed
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- `asPolynomial` function due to scope pollution
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- Codegend for ejml (450 lines of codegen for 1000 lines of code is too much)
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### Fixed
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- Median statistics
- Complex power of negative real numbers
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- Add proper mutability for MutableBufferND rows and columns
2024-02-20 19:35:00 +03:00
- Generic Float32 and Float64 vectors are used in geometry algebras.
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2023-05-09 19:44:39 +03:00
## 0.3.1 - 2023-04-09
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### Added
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- Wasm support for `memory`, `core`, `complex` and `functions` modules.
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- Generic builders for `BufferND` and `MutableBufferND`
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- `NamedMatrix` - matrix with symbol-based indexing
- `Expression` with default arguments
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- Type-aliases for numbers like `Float64`
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- Autodiff for generic algebra elements in core!
- Algebra now has an obligatory `bufferFactory` (#477).
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### Changed
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- Removed marker `Vector` type for geometry
2023-04-09 11:12:04 +03:00
- Geometry uses type-safe angles
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- Tensor operations switched to prefix notation
- Row-wise and column-wise ND shapes in the core
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- Shape is read-only
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- Major refactor of tensors (only minor API changes)
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- Kotlin 1.8.20
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- `LazyStructure` `deffered` -> `async` to comply with coroutines code style
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- Default `dot` operation in tensor algebra no longer support broadcasting. Instead `matmul` operation is added
to `DoubleTensorAlgebra`.
2022-08-04 09:54:59 +03:00
- Multik went MPP
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### Removed
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- Trajectory moved to https://github.com/SciProgCentre/maps-kt
- Polynomials moved to https://github.com/SciProgCentre/kmath-polynomial
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## 0.3.0
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### Added
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- `ScaleOperations` interface
- `Field` extends `ScaleOperations`
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- Basic integration API
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- Basic MPP distributions and samplers
- `bindSymbolOrNull`
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- Blocking chains and Statistics
- Multiplatform integration
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- Integration for any Field element
- Extended operations for ND4J fields
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- Jupyter Notebook integration module (kmath-jupyter)
- `@PerformancePitfall` annotation to mark possibly slow API
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- Unified architecture for Integration and Optimization using features.
- `BigInt` operation performance improvement and fixes by @zhelenskiy (#328)
- Integration between `MST` and Symja `IExpr`
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- Complex power
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- Separate methods for UInt, Int and Number powers. NaN safety.
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- Tensorflow prototype
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- `ValueAndErrorField`
- MST compilation to WASM: #286
- Jafama integration: #176
- `contentEquals` with tolerance: #364
- Compilation to TeX for MST: #254
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### Changed
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- Annotations moved to `space.kscience.kmath`
- Exponential operations merged with hyperbolic functions
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- Space is replaced by Group. Space is reserved for vector spaces.
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- VectorSpace is now a vector space
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- Buffer factories for primitives moved to MutableBuffer.Companion
- Rename `NDStructure` and `NDAlgebra` to `StructureND` and `AlgebraND` respectively
- `Real` -> `Double`
2021-03-19 14:53:14 +03:00
- DataSets are moved from functions to core
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- Redesign advanced Chain API
- Redesign `MST`. Remove `MstExpression`.
- Move `MST` to core
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- Separated benchmarks and examples
- Rewrite `kmath-ejml` without `ejml-simple` artifact, support sparse matrices
- Promote stability of kmath-ast and kmath-kotlingrad to EXPERIMENTAL.
2021-05-14 12:42:27 +03:00
- ColumnarData returns nullable column
- `MST` is made sealed interface
- Replace `MST.Symbolic` by `Symbol`, `Symbol` now implements MST
- Remove Any restriction on polynomials
- Add `out` variance to type parameters of `StructureND` and its implementations where possible
- Rename `DifferentiableMstExpression` to `KotlingradExpression`
2021-06-08 14:27:45 +03:00
- `FeatureSet` now accepts only `Feature`. It is possible to override keys and use interfaces.
- Use `Symbol` factory function instead of `StringSymbol`
- New discoverability pattern: `<Type>.algebra.<nd/etc>`
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- Adjusted commons-math API for linear solvers to match conventions.
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- Buffer algebra does not require size anymore
- Operations -> Ops
- Default Buffer and ND algebras are now Ops and lack neutral elements (0, 1) as well as algebra-level shapes.
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- Tensor algebra takes read-only structures as input and inherits AlgebraND
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- `UnivariateDistribution` renamed to `Distribution1D`
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- Rework of histograms.
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- `UnivariateFunction` -> `Function1D`, `MultivariateFunction` -> `FunctionND`
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### Deprecated
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- Specialized `DoubleBufferAlgebra`
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### Removed
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- Nearest in Domain. To be implemented in geometry package.
- Number multiplication and division in main Algebra chain
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- `contentEquals` from Buffer. It moved to the companion.
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- MSTExpression
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- Expression algebra builders
- Complex and Quaternion no longer are elements.
- Second generic from DifferentiableExpression
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- Algebra elements are completely removed. Use algebra contexts instead.
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### Fixed
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- Ring inherits RingOperations, not GroupOperations
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- Univariate histogram filling
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## 0.2.0
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### Added
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- `fun` annotation for SAM interfaces in library
- Explicit `public` visibility for all public APIs
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- Better trigonometric and hyperbolic functions for `AutoDiffField` (https://github.com/mipt-npm/kmath/pull/140)
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- Automatic README generation for features (#139)
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- Native support for `memory`, `core` and `dimensions`
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- `kmath-ejml` to supply EJML SimpleMatrix wrapper (https://github.com/mipt-npm/kmath/pull/136)
- A separate `Symbol` entity, which is used for global unbound symbol.
- A `Symbol` indexing scope.
- Basic optimization API for Commons-math.
- Chi squared optimization for array-like data in CM
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- `Fitting` utility object in prob/stat
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- ND4J support module submitting `NDStructure` and `NDAlgebra` over `INDArray`
- Coroutine-deterministic Monte-Carlo scope with a random number generator
- Some minor utilities to `kmath-for-real`
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- Generic operation result parameter to `MatrixContext`
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- New `MatrixFeature` interfaces for matrix decompositions
- Basic Quaternion vector support in `kmath-complex`.
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### Changed
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- Package changed from `scientifik` to `space.kscience`
- Gradle version: 6.6 -> 6.8.2
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- Minor exceptions refactor (throwing `IllegalArgumentException` by argument checks instead of `IllegalStateException`)
2021-01-19 16:25:26 +03:00
- `Polynomial` secondary constructor made function
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- Kotlin version: 1.3.72 -> 1.4.30
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- `kmath-ast` doesn't depend on heavy `kotlin-reflect` library
- Full autodiff refactoring based on `Symbol`
2020-10-28 09:16:21 +03:00
- `kmath-prob` renamed to `kmath-stat`
- Grid generators moved to `kmath-for-real`
- Use `Point<Float64>` instead of specialized type in `kmath-for-real`
2020-11-29 21:38:12 +03:00
- Optimized dot product for buffer matrices moved to `kmath-for-real`
- EjmlMatrix context is an object
- Matrix LUP `inverse` renamed to `inverseWithLup`
- `NumericAlgebra` moved outside of regular algebra chain (`Ring` no longer implements it).
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- Features moved to NDStructure and became transparent.
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- Capitalization of LUP in many names changed to Lup.
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- Refactored `NDStructure` algebra to be more simple, preferring under-the-hood conversion to explicit NDStructure types
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- Refactor histograms. They are marked as prototype
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- `Complex` and related features moved to a separate module `kmath-complex`
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- Refactor AlgebraElement
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- `symbol` method in `Algebra` renamed to `bindSymbol` to avoid ambiguity
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- Add `out` projection to `Buffer` generic
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### Removed
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- `kmath-koma` module because it doesn't support Kotlin 1.4.
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- Support of `legacy` JS backend (we will support only IR)
- `toGrid` method.
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- Public visibility of `BufferAccessor2D`
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- `Real` class
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- StructureND identity and equals
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### Fixed
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- `symbol` method in `MstExtendedField` (https://github.com/mipt-npm/kmath/pull/140)
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## 0.1.4
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### Added
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- Functional Expressions API
- Mathematical Syntax Tree, its interpreter and API
- String to MST parser (https://github.com/mipt-npm/kmath/pull/120)
- MST to JVM bytecode translator (https://github.com/mipt-npm/kmath/pull/94)
- FloatBuffer (specialized MutableBuffer over FloatArray)
- FlaggedBuffer to associate primitive numbers buffer with flags (to mark values infinite or missing, etc.)
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- Specialized builder functions for all primitive buffers
like `IntBuffer(25) { it + 1 }` (https://github.com/mipt-npm/kmath/pull/125)
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- Interface `NumericAlgebra` where `number` operation is available to convert numbers to algebraic elements
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- Inverse trigonometric functions support in
ExtendedField (`asin`, `acos`, `atan`) (https://github.com/mipt-npm/kmath/pull/114)
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- New space extensions: `average` and `averageWith`
- Local coding conventions
- Geometric Domains API in `kmath-core`
- Blocking chains in `kmath-coroutines`
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- Full hyperbolic functions support and default implementations within `ExtendedField`
- Norm support for `Complex`
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### Changed
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- `readAsMemory` now has `throws IOException` in JVM signature.
- Several functions taking functional types were made `inline`.
- Several functions taking functional types now have `callsInPlace` contracts.
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- BigInteger and BigDecimal algebra: JBigDecimalField has companion object with default math context; minor
optimizations
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- `power(T, Int)` extension function has preconditions and supports `Field<T>`
- Memory objects have more preconditions (overflow checking)
- `tg` function is renamed to `tan` (https://github.com/mipt-npm/kmath/pull/114)
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- Gradle version: 6.3 -> 6.6
2020-08-15 13:00:17 +03:00
- Moved probability distributions to commons-rng and to `kmath-prob`
2020-08-10 22:36:08 +03:00
### Fixed
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- Missing copy method in Memory implementation on JS (https://github.com/mipt-npm/kmath/pull/106)
- D3.dim value in `kmath-dimensions`
- Multiplication in integer rings in `kmath-core` (https://github.com/mipt-npm/kmath/pull/101)
- Commons RNG compatibility (https://github.com/mipt-npm/kmath/issues/93)
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- Multiplication of BigInt by scalar