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2 | 2 |
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3 | 3 | LogicNG uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html). |
4 | 4 |
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| 5 | +## [2.6.0] - 2024-09-10 |
| 6 | + |
| 7 | +### Added |
| 8 | + |
| 9 | +- New class `OptimizationConfig` used to configure optimization computations in various algorithms. It allows to configure the following aspects: |
| 10 | + - the `optimizationType` (either SAT-based optimization or a MaxSAT algorithm) |
| 11 | + - the `maxSATConfig` to further configure the MaxSAT algorithm |
| 12 | + - the `optimizationHandler` to use |
| 13 | + - the `maxSATHandler` to use |
| 14 | +- Added three new configuration options to `AdvancedSimplifierConfig`: |
| 15 | + - `minimalDnfCover` determines whether the step for computing the minimal DNF cover should be performed. Default is `true`. |
| 16 | + - `returnIntermediateResult` allows to return an intermediate result from the `AdvancedSimplifier` if the computation was aborted by a handler. Default is `false`. |
| 17 | + - `optimizationConfig` can be used to configure the algorithms in the simplifier which perform optimizations, also the `OptimizationHandler handler` moved into this config |
| 18 | + |
| 19 | +## [2.5.1] - 2024-07-31 |
| 20 | + |
| 21 | +### Changed |
| 22 | + |
| 23 | +- Changed visibility from some methods from package-private to public for formula and solver serializiation via the |
| 24 | + new https://github.com/logic-ng/serialization library |
| 25 | + |
| 26 | + |
| 27 | +## [2.5.0] - 2024-05-02 |
| 28 | + |
| 29 | +### Removed (Potentially Breaking Change!) |
| 30 | + |
| 31 | +- All parser classes from `org.logicng.io.parsers` (including in particular the two main parsers `PropositionalParser` and `PseudoBooleanParser`) as well as the class `org.logicng.io.readers.FormulaReader` were moved to the new artifacts `org.logicng.logicng-parser-j8` (or `org.logicng.logicng-parser-j11` for Java 11). So LogicNG now consists of two artifacts: |
| 32 | + - All the core functionality of LogicNG except for the parser is located in the "old" `org.logicng:logicng` artifact. This artifact does *not* depend on ANTLR anymore (which was the reason for splitting the library). This library will stay on Java 8, but nothing should prevent its usage in higher Java versions. |
| 33 | + - The parser functionality is located in `org.logicng:logicng-parser-j8` (for Java 8 and ANTLR 4.9.3) and `org.logicng:logicng-parser-j11` (for Java 11 and the most recent ANTLR version). The version of this library will stay in sync with the core library. |
| 34 | +- The method `FormulaFactory.parse()` was removed. If you're using this method you should include one of the new parser artefacts and then just create your own `PropositionalParser` or `PseudoBooleanParser` and call `parse()` on them. |
| 35 | + |
| 36 | +### Added |
| 37 | + |
| 38 | +- Added unsafe methods `term` and `dnf` to the `FormulaFactory` to create a term (conjunction of literals) or a DNF (c.f. with method `FormulaFactory#clause` and `FormulaFactory#cnf`). Both methods do not perform reduction operations and therefore are faster. Only use these methods if you are sure the input is free of complementary and redundant operands. |
| 39 | +- Class `UBTree` offers new method `generateSubsumedUBTree` to directly generate a subsumed UBTree for the given sets. |
| 40 | +- The `DnnfFactory` now offers a method to compile a DNNF with a `DnnfCompilationHandler` |
| 41 | +- The `ModelCounter` now offers a method to pass a `DnnfCompilationHandler` in order to control long-running computations |
| 42 | + |
| 43 | +### Changed |
| 44 | + |
| 45 | +- UBTree data structure now supports empty sets. |
| 46 | +- Added side effect note in `SATSolver` for the four assumption solving methods. |
| 47 | +- Methods for reordering and swapping variables on BDD were refactored: `BDD.getReordering`, `BDDKernel.getReordering`, and `BDD.swapVariables` are now deprecated and should not be used anymore. Instead, there are new methods on the `BDDKernel`. Note that these actions affect all BDDs generated by the kernel. |
| 48 | + - `BDDKernel.swapVariables` for swapping two variables (or variable indices) |
| 49 | + - `BDDKernel.reorder` for automatically reordering the BDD |
| 50 | + - `BDDKernel.activateReorderDuringBuild` for activating reordering during build |
| 51 | + - `BDDKernel.addVariableBlock` for defining a variable block for reordering |
| 52 | + - `BDDKernel.addAllVariablesAsBlock` for defining one block for each variable (s.t. all variables are allowed to be reordered independently) |
| 53 | +- Significant performance improvements in the DTree generation for DNNFs |
| 54 | +- Minor performance improvements in some DNF/CNF generating algorithms by using faster `cnf`/`dnf`. |
| 55 | + |
| 56 | +### Fixed |
| 57 | + |
| 58 | +- The formula generation on BDDs was broken when the ordering was changed by `BDDKernel.reorder` or `BDDKernel.swapVariables`. This is now fixed. |
| 59 | + |
5 | 60 | ## [2.4.1] - 2022-12-01 |
6 | 61 |
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7 | 62 | ### Changed |
@@ -359,4 +414,3 @@ LogicNG uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html). |
359 | 414 | ### Added |
360 | 415 |
|
361 | 416 | - Initial Release of LogicNG |
362 | | - |
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