Comments (11)
No, just a whole solution, with fractional values for any unknown binary variables
A more sophisticated "sparse" representation of the values of integer variables to be used has been suggested, and isn't hard to add
What's less obvious is how to make use of a partial MIP solution. Currently HiGHS will solve the MIP with these values fixed to try to identify an integer feasible solution. However, this will be inefficient if sufficiently few integer variables are set in a partial MIP solution
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Related Issues (20)
- Solving alternative systems using `Highs::basisSolve` and `Highs::basisTransposeSolve` HOT 1
- Fix the O(N^2) cost of passColName and passRowName when adding columns and rows one-by-one
- Re-solving many times with primal simplex can lead to basis issues (rare occurrence) HOT 1
- Evaluating model complexity in highs avoiding device related performance
- Add irreducible inconsistent system (IIS) identification for LP
- Build fails on macOS: `f951: Error: '-fno-fat-lto-objects' are supported only with linker plugin` HOT 3
- Get Column Cost HOT 1
- Spurious statement of Integer when writing model HOT 1
- primal_solution_status is reported as kSolutionStatusFeasible for infeasible model when solver=ipm and presolve=off
- Logging header not printed if `h.writeModel` or `h.writeSolution` called before a method using the HighsIO
- `Highs::writeModel("")` uses `HighsIO`, but `Highs::writeSolution("")` uses `fprintf` for stdout HOT 1
- HiGHS 1.7.1 HighsCallbackDataOut data type can no longer be accessed directly for mip_solution item. HOT 1
- Time limit solving Jeroslow MIP seems not to be triggered HOT 2
- Stop MIP solve on `simplex_iteration_limit` (or other LP iteration limit) - Access iteration count via callback? HOT 2
- CMake configuration fails with versions >3.23.0 and <3.24.0
- Longer runtimes for ILP models created with `addVariable` versus `addCol` HOT 4
- PInvokeStackImbalance exception when targetting .NET Framework (Windows)
- highspy API improvements and benchmark HOT 1
- Stream HiGHs solver output in pyomo HOT 1
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