ILOG CPLEX Parameter Names

In the parts of this manual where the algorithmic discussion is independent of the compiler or language, CPLEX parameter names are generally given in terms of their Concert naming convention. For convenience, Table A.1, Parameter Name Equivalents in this appendix lists the correspondence of these names to those used by the Callable Library and the Interactive Optimizer. For details of each of these parameters, consult Appendix A of the ILOG CPLEX Reference Manual.

In most cases, parameter names follow these conventions:

In C++ programs using Concert, the parameter name is preceded by "IloCplex::". It is not generally necessary to distinguish among integer, Boolean, numeric, and string parameters. Example usage:

cplex.setParam(IloCplex::AdvInd, 0);

Concert Technology in Java Programs

In Java programs using Concert, the parameter name is preceded by "IloCplex.", then either "IntParam." or "NumParam." "BooleanParam.", or "StringParam.", depending on the entry shown in the Type column of the table. Example usage:

cplex.setParam(IloCplex.BooleanParam.AdvInd, false);

Callable Library

The Callable Library puts the parameter name in all capital letters, preceded by "CPX_PARAM_". Parameters are accessed by functions such as CPXsetintparam(), CPXsetdblparam(), and CPXsetstrparam(). Boolean parameters are treated the same as integer parameters in the Callable Library. Example usage:

status = CPXsetintparam (env, CPX_PARAM_ADVIND, CPX_OFF);

Interactive Optimizer

The Interactive Optimizer user sets parameters via a menu or submenu, usually with a similar but not identical name to the Concert name. Example usage:

CPLEX> SET ADVANCE NO

Exceptions

Exceptions are marked in the manual with an asterisk. They are:

• PreLinear is not available in Concert, as its functionality is handled by other means such as callbacks.
• RootAlg in Concert has multiple meanings in the other two interfaces.
• ScrInd is available only in the Callable Library, as its functionality is limited to this interface.