C Name

CPX_PARAM_ADVIND

C++ Name

AdvInd

Java Name

AdvInd

.NET Name

AdvInd

InteractiveOptimizer

advance

Identifier

1001

Description

If set to 1 or 2, this parameter indicates that CPLEX should use advanced starting information when optimization is initiated.

For MIP models, setting 1 (one) will cause CPLEX to continue with a partially explored MIP tree if one is available. If tree exploration has not yet begun, setting 1 (one) specifies that CPLEX should use a loaded MIP start, if available. Setting 2 retains the current incumbent (if there is one), re-applies presolve, and starts a new search from a new root. Setting 2 can be particularly useful for solving fixed MIP models, where a start vector but no corresponding basis is available.

For continuous models solved with simplex, setting 1 (one) will use the currently loaded basis. If a basis is available only for the original, unpresolved model, or if CPLEX has a start vector rather than a simplex basis, then the simplex algorithm will proceed on the unpresolved model. With setting 2, CPLEX will first perform presolve on the model and on the basis or start vector, and then proceed with optimization on the presolved problem.

For continuous models solved with the barrier algorithm, settings 1 or 2 will continue optimization from the last available barrier iterate.

Values