v1.13.0

HiGHS v1.13.0

Diff since v1.12.2

Merged pull requests:

• added node limit (#259) (@matbesancon)
• Fix CI badge in README.md (#260) (@odow)
• Add support for [email protected] (#261) (@odow)
• Add support for ObjectiveFunction{VectorAffineFunction} (#263) (@odow)
• Prep for v1.13.0 (#264) (@odow)

Closed issues:

• Add support for ObjectiveFunction{VectorAffineFunction} (#262)

v1.12.2

HiGHS v1.12.2

Diff since v1.12.1

Merged pull requests:

• Fix dual objective value with free variable (#255) (@odow)
• Prep for v1.12.2 (#256) (@odow)

Closed issues:

• Caculation speed in Julia is a bit slower than that in the direct execution of HiGHS binary (#253)
• Error when querying dual objective value for an unbounded model with at least one unbounded variable (#254)

v1.12.1

HiGHS v1.12.1

Diff since v1.12.0

Merged pull requests:

• Add support for [email protected] (#251) (@odow)
• Prep for v1.12.1 (#252) (@odow)

v1.12.0

HiGHS v1.12.0

Diff since v1.11.0

Merged pull requests:

• Add support for two-set add_constrained_variable (#248) (@odow)
• Add more methods to compile_workload (#249) (@odow)
• Prep for v1.12.0 (#250) (@odow)

v1.11.0

HiGHS v1.11.0

Diff since v1.10.2

Merged pull requests:

• Add support for MOI.add_constrained_variable (#245) (@odow)
• Improve performance of haskey lookups (#246) (@odow)
• Prep for v1.11.0 (#247) (@odow)

v1.10.2

HiGHS v1.10.2

Diff since v1.10.1

Merged pull requests:

• Fix supports_constraint(::Optimizer, ::Type{VariableIndex}, ::Type{ZeroOne}) (#242) (@odow)
• Prep for v1.10.2 (#243) (@odow)

Closed issues:

• Bad error for small time limit (#240)
• set_binary notworking if solver = ipm (#241)

v1.10.1

HiGHS v1.10.1

Diff since v1.10.0

Merged pull requests:

• Update to [email protected] (#235) (@odow)
• Fix DualObjectiveValue (#237) (@odow)
• Prep for v1.10.1 (#238) (@odow)
• Update README.md to clarify options are optional (#239) (@odow)

Closed issues:

• Debug Benders decomposition tutorial with latest HiGHS (#236)

v1.10.0

HiGHS v1.10.0

Diff since v1.9.3

Merged pull requests:

• Fix ObjectiveBound and RelativeGap for LP models (#229) (@odow)
• Add CallbackFunction to MOI wrapper (#230) (@odow)
• Fix performance of DualObjectiveValue when a ray is present (#233) (@odow)
• Prep for v1.10.0 (#234) (@odow)

Closed issues:

• Various problems extracting results for some models (#223)
• Support the HiGHS callback in MOI (#228)
• Option "qp_iteration_limit" is unknown (#231)
• Slow calculations for dual_objective_value() (#232)

v1.9.3

HiGHS v1.9.3

Diff since v1.9.2

Merged pull requests:

• Remove unneeded init function (#222) (@visr)
• Use HiGHS to compute the dual objective value (#226) (@odow)
• Prep for v1.9.3 (#227) (@odow)

Closed issues:

• Bugs: Optimizer stucks in an infinite loop when solving a small size problem (#221)
• Add a flag to write out models on solve (#224)
• Don't use fallback for DualObjectiveValue (#225)

v1.9.2

HiGHS v1.9.2

Diff since v1.9.1

Merged pull requests:

• Add support for [email protected] (#220) (@odow)