ILOG CPLEX 11.0 User's Manual

Pattern Generator ModelThe submodel of the cutting stock problem is represented by the model patGen in thisexample. This pattern generator patGen (in contrast to cutOpt) is defined by the integervariables in the array Use. That array appears in the only constraint added to patGen: ascalar product making sure that the patterns used do not exceed the width of rolls. Theapplication also adds a rudimentary objective function to patGen. This objective initiallyconsists of only the constant 1 (one). The rest of the objective function depends on thesolution found with the initial model cutOpt. The application will build that objectivefunction as that information is computed. Here, in short, is patGen:IloModel patGen (env);IloObjective ReducedCost = IloAdd(patGen, IloMinimize(env, 1));IloNumVarArray Use(env, nWdth, 0, IloInfinity, ILOINT);patGen.add(IloScalProd(size, Use)