If you determine that your application needs to seize control, intervene in the search, and redirect the optimizer, then the following control callbacks are available to do so.
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The node callback allows you to query and optionally overwrite the next node ILOG CPLEX will process during a branch & cut search.
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IloCplex::NodeCallbackI in the C++ API
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IloCplex.NodeCallback in the Java API
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Cplex.NodeCallback in the .NET API
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CPXsetnodecallbackfunc in the Callable Library (C API)
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The solve callback allows you to specify and configure the optimizer option to be used for solving the LP at each individual node.
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IloCplex::SolveCallbackI in the C++ API
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IloCplex.SolveCallback in the Java API
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Cplex.SolveCallback in the .NET API
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CPXsetsolvecallbackfunc in the Callable Library (C API)
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The cut callback allows you to add problem-specific cuts at each node.
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IloCplex::CutCallbackI in the C++ API
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IloCplex.CutCallback in the Java API
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Cplex.CutCallback in the .NET API
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CPXsetcutcallbackfunc in the Callable Library (C API)
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The heuristic callback allows you to implement a heuristic that tries to generate a new incumbent from the solution of the LP relaxation at each node.
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IloCplex::HeuristicCallbackI in the C++ API
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IloCplex.HeuristicCallback in the Java API
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Cplex.HeuristicCallback in the .NET API
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CPXsetheuristiccallback in the Callable Library (C API)
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The branch callback allows you to query and optionally overwrite the way ILOG CPLEX will branch at each node.
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IloCplex::BranchCallbackI in the C++ API
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IloCplex.BranchCallback in the Java API
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Cplex.BranchCallback in the .NET API
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CPXsetbranchcallbackfunc in the Callable Library (C API)
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The incumbent callback allows you to check and optionally reject incumbents found by ILOG CPLEX during the search.
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IloCplex::IncumbentCallbackI in the C++ API
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IloCplex.IncumbentCallback in the Java API
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Cplex.IncumbentCallback in the .NET API
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CPXsetincumbentcallbackfunc in the Callable Library (C API)
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