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 HiGHS_jll@1.8.0 (#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 HiGHS@1.7.2 (#220) (@odow)

v1.9.1

HiGHS v1.9.1

Diff since v1.9.0

Merged pull requests:

• Update versions in GitHub actions (#211) (@odow)
• Add Getting help section to README (#212) (@odow)
• Create .codecov.yml to ignore src/gen (#213) (@odow)
• Add tests to improve code coverage (#214) (@odow)
• Add more tests to improve code coverage (#215) (@odow)
• Fix getting infeasible primal/dual solutions (#216) (@odow)
• Simplify getter of ConstraintBasisStatus (#217) (@odow)
• Update to HiGHS_jll v1.7.1 (#218) (@odow)
• Prep for v1.9.1 (#219) (@odow)

Closed issues:

• Add ability to reset basis matrix (#192)
• Solution and incumbent are different (#208)
• Highs_resetGlobalScheduler not defined (#209)
• Non-convex QPs (#210)

v1.9.0

HiGHS v1.9.0

Diff since v1.8.1

Merged pull requests:

• Test on Apple Silicon (#203) (@odow)
• Support HiGHS v1.7.0 (#205) (@odow)
• Prep for v1.9.0 (#206) (@odow)

Closed issues:

• HiGHS v1.7 (#204)

v1.8.1

HiGHS v1.8.1

Diff since v1.8.0

Merged pull requests:

• Optimize the approach to clear quadratic objective (#197) (@metab0t)
• Fix typo in README (#198) (@odow)
• Add test for writing mps.gz files (#200) (@odow)
• Prep for v1.8.1 (#201) (@odow)

Closed issues:

• HiGHS zlib support (#199)

v1.8.0

HiGHS v1.8.0

Diff since v1.7.5

Merged pull requests:

• Add note on thread-safety to README (#182) (@odow)
• Add support for MOI.ScalarQuadraticCoefficientChange (#195) (@odow)
• Add support for vector-valued MOI.set when setting new ConstraintSet (#196) (@odow)

Closed issues:

• Julia threads and HiGHS threads interaction (#181)
• Time limit not compliant with MOI interface (#190)
• [documentation] Banner to indicate documentation version (#191)
• [MOI] allow batch modification (#193)
• [MOI] Allow modifications in quadratic function (#194)