All releases of Koalog Constraint Solver
Release Notes: New constraints and heuristics have been added to Koalog Constraint Solver. There is now a generic mechanism to "shave" the variables. The naming scheme for the constraints is now more uniform. Finally, the performance of Koalog Constraint Solver has been improved.
Release Notes: Real ANYTIME constraint solving has been introduced. A hierarchy of consistency exceptions allows basic failure explanations. Some new constraints have been added or optimized.
Release Notes: New constraints have been added to the constraint library. The support matrix of the software has been updated. Minor bugs have been fixed.
Release Notes: This release contains new constraints. In particular, a global constraint for matrix allocation has been added (ColoredMatrix). Various small fixes increase the overall performance of the solver.
Release Notes: This version now includes a Local Search solver useful for solving huge problems when exact methods are too slow. Exact (Constraint Programming) and approximate (Local Search) methods are well integrated in the new hierarchy of solvers. This version is now supported on Java 5.
Release Notes: The API for disjunctive scheduling has been refactored a lot. In particular, a Disjunctive constraint has been added which makes the modeling of problems such as the Job Shop a very easy task. Moreover, this release includes various optimizations in choice points, constraints, and constraint schedulers. Minor bugs have been fixed.
Release Notes: Koalog Constraint Solver has been optimized. This release also includes new constraints on sets. Moreover, a new API makes it possible to store arbitrary data on the choice point stack (allowing the writing of incremental algorithms for global constraints).
Release Notes: The Koalog Constraint Solver API has been simplified a lot, and is now more intuitive and easy to use. Moreover, many useless constraints have been removed while some new, more generic constraints have been addded. Finally, choice points have been optimized. Many new code examples are now available from the KCS Web site.
Release Notes: Constraint relation has been added, and constraint complexities are now dynamically computed.
Release Notes: This release includes many new features. Koalog Constraint Solver now includes a solver over set domains (only integer domains were supported in previous releases) and many constraints over set variables: contains, intersection, union, card, etc. Many new global constraints such as GCC, ColoredMatrix, and AllDifferent (a new algorithm) have also been added to the solver, dramatically increasing its efficiency.
