Modeling assistance in CPLEX

CPLEX can assist you as you develop your model.

CPLEX offers assistance to help you to identify and to eliminate troublesome elements from your model. Turn on modeling assistance by setting the data consistency checking and modeling assistance parameter to the value CPX_DATACHECK_ASSIST (2). After this data-checking parameter is turned on at this level, CPLEX modeling assistance prints warnings (in the warning log or on the warning channel, depending on your settings for messages). The warnings are about potential problems in your model. The warnings from modeling assistance can help you identify sources of numerical difficulty, instability, or ill-conditioning in your model. For example, modeling assistance will report bounds, coefficients, and righthand side (RHS) values that are inappropriately large or small. The number of warnings shown can be controlled with the warning limit parameter.