ILOG CPLEX C++ API 9.0 Reference Manual

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IloCplex::ContinuousCallbackI Description An instance of a class derived from IloCplex::ContinuousCallbackI represents a user-written callback in an ILOG CPLEX application that uses an instance of IloCplex with the primal simplex, dual simplex, or barrier optimizer. IloCplex calls the user-written callback after each iteration during an optimization of a problem solved at a node. This class offers methods for use within the callbacks you write. In particular, there are methods in this class to access primal and dual feasibility, number of iterations, and objective value. The methods of this class are protected for use in deriving a user-written callback class and in implementing the main method there. If an attempt is made to access information not available to an instance of this class, an exception is thrown. Note: There are special callbacks for simplex and barrier, that is, IloCplex::SimplexCallbackI and IloCplex::BarrierCallbackI, respectively. Using a continous callback sets this callback in both of these algorithms. If a special callback was already set for one of these algorithms, (for example, simplex) it is replaced by the general continuous callback. See Also Constructors Methods IloCplex, IloCplex::Callback, IloCplex::CallbackI, ILOCONTINUOUSCALLBACK0 protected ContinuousCallbackI() This constructor creates a callback for use in an application that solves continuous models. protected IloNum getDualInfeasibility() This method returns the current dual infeasibility measure of the solution in the instance of IloCplex at the time the invoking callback is executed. protected IloNum getInfeasibility() This method returns the current primal infeasibility measure of the solution in the instance of IloCplex at the time the invoking callback is executed. protected IloInt getNiterations() This method returns the number of iterations completed so far by an instance of IloCplex at the invoking callback is executed. protected IloNum getObjValue() ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 104
IloCplex::ContinuousCallbackI This method returns the current objective value of the solution in the instance of IloCplex at the time the invoking callback is executed. protected IloBool isDualFeasible() This method returns IloTrue if the current solution is dual feasible. protected IloBool isFeasible() This method returns IloTrue if the current solution is primal feasible. ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 105
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ILOG CPLEX C++ API 9.0 Reference Ma
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T ABLE OF C ONTENTS IloCplex::Branc
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About This Manual This reference ma
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Concepts Branch & Cut IloCplex, lik
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It is possible to tell IloCplex to
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Group optim.cplex.cpp The API of IL
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IloCplex::Algorithm IloCplex::Basis
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ILOFLOAT, for continuous, ILOINT, f
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ILOBARRIERCALLBACK0 ILOBARRIERCALLB
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ILOCONTINUOUSCALLBACK0 ILOCONTINUOU
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ILOCPLEXGOAL0 } return 0; This macr
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ILOCUTCALLBACK0 ILOCUTCALLBACK0 Cat
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ILOFRACTIONALCUTCALLBACK0 ILOFRACTI
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ILOINCUMBENTCALLBACK0 ILOINCUMBENTC
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ILOMIPCALLBACK0 ILOMIPCALLBACK0 Cat
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ILONODECALLBACK0 ILONODECALLBACK0 C
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ILOPROBINGCALLBACK0 ILOPROBINGCALLB
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ILOSOLVECALLBACK0 ILOSOLVECALLBACK0
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IloCplex IloCplex Category Class In
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IloCplex public IloCplex::CplexStat
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IloCplex public void public void pu
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IloCplex IloCplex::NodeSelect IloCp
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IloCplex Mathematical Programming m
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IloCplex IloCplex effectively treat
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IloCplex classes that allow the use
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IloCplex When IloCplex is not divin
Page 54 and 55: IloCplex public const IloConstraint
Page 56 and 57: IloCplex This method deletes all la
Page 58 and 59: IloCplex to use for the constraint
Page 60 and 61: IloCplex public IloCplex::CplexStat
Page 62 and 63: IloCplex Note:CPLEX resizes these a
Page 64 and 65: IloCplex This method returns the nu
Page 66 and 67: IloCplex public IloCplex::PWLFormul
Page 68 and 69: IloCplex public void getValues(cons
Page 70 and 71: IloCplex This method creates and re
Page 72 and 73: IloCplex This method sets the prefe
Page 74 and 75: IloCplex its subgoals. See the conc
Page 76 and 77: IloCplex::Algorithm IloCplex::Algor
Page 78 and 79: IloCplex::BarrierCallbackI IloCplex
Page 80 and 81: IloCplex::BasisStatus IloCplex::Bas
Page 82 and 83: IloCplex::BoolParam IloCplex::BoolP
Page 84 and 85: IloCplex::BranchCallbackI IloCplex:
Page 86 and 87: IloCplex::BranchCallbackI ControlCa
Page 88 and 89: IloCplex::BranchCallbackI IloCplex:
Page 90 and 91: IloCplex::BranchCallbackI NodeData
Page 92 and 93: IloCplex::BranchCallbackI no branch
Page 94 and 95: IloCplex::BranchDirection IloCplex:
Page 96 and 97: IloCplex::Callback IloCplex::Callba
Page 98 and 99: IloCplex::CallbackI IloCplex::Callb
Page 100 and 101: IloCplex::CallbackI callbacks can a
Page 102 and 103: Callback::Type Callback::Type Categ
Page 106 and 107: IloCplex::ControlCallbackI IloCplex
Page 108 and 109: IloCplex::ControlCallbackI MIPCallb
Page 110 and 111: IloCplex::ControlCallbackI This met
Page 112 and 113: IloCplex::ControlCallbackI For each
Page 114 and 115: ControlCallbackI::IntegerFeasibilit
Page 116 and 117: IloCplex::CplexStatus See also the
Page 118 and 119: IloCplex::CrossoverCallbackI IloCpl
Page 120 and 121: IloCplex::CutCallbackI IloCplex::Cu
Page 122 and 123: IloCplex::CutCallbackI from a user-
Page 124 and 125: IloCplex::DisjunctiveCutCallbackI I
Page 126 and 127: IloCplex::DualPricing IloCplex::Dua
Page 128 and 129: IloCplex::FlowMIRCutCallbackI IloCp
Page 130 and 131: IloCplex::FractionalCutCallbackI Il
Page 132 and 133: IloCplex::Goal IloCplex::Goal Categ
Page 134 and 135: IloCplex::GoalI IloCplex::GoalI Cat
Page 136 and 137: IloCplex::GoalI public IloInt publi
Page 138 and 139: IloCplex::GoalI Methods public void
Page 140 and 141: IloCplex::GoalI Returns the solutio
Page 142 and 143: IloCplex::GoalI const IloNumVarArra
Page 144 and 145: IloCplex::GoalI Returns the branch
Page 146 and 147: IloCplex::GoalI public IloBool isIn
Page 148 and 149: GoalI::BranchType GoalI::BranchType
Page 150 and 151: GoalI::IntegerFeasibilityArray Goal
Page 152 and 153: IloCplex::HeuristicCallbackI protec
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IloCplex::HeuristicCallbackI protec
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IloCplex::HeuristicCallbackI The pa
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IloCplex::IISStatusArray IloCplex::
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IloCplex::IncumbentCallbackI MIPCal
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IloCplex::IntParam IloCplex::IntPar
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IloCplex::IntParam See the referenc
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IloCplex::IntParam = CPX_PARAM_COLR
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IloCplex::IntParam = CPX_PARAM_FRAC
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IloCplex::InvalidCutException IloCp
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IloCplex::LazyConstraintCallbackI M
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IloCplex::MIPCallbackI protected Il
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IloCplex::MIPCallbackI IloCplex::No
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IloCplex::MIPCallbackI Returns the
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MIPCallbackI::NodeData MIPCallbackI
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IloCplex::MIPEmphasisType = CPX_MIP
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IloCplex::MultipleObjException IloC
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IloCplex::NetworkCallbackI The meth
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IloCplex::NodeCallbackI protected v
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IloCplex::NodeCallbackI protected I
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IloCplex::NodeEvaluator IloCplex::N
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IloCplex::NodeEvaluatorI IloCplex::
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IloCplex::NodeEvaluatorI branch, 0
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IloCplex::NodeSelect IloCplex::Node
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IloCplex::NumParam = CPX_PARAM_EPOP
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IloCplex::PWLFormulation IloCplex::
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IloCplex::PresolveCallbackI model,
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IloCplex::ProbingCallbackI IloCplex
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IloCplex::ProbingCallbackI This met
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IloCplex::Quality Primalobj, Primal
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IloCplex::Quality = CPX_SUM_X SumSc
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IloCplex::SearchLimit The default c
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IloCplex::SearchLimitI creates a go
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IloCplex::SimplexCallbackI ILOG CPL
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IloCplex::SolveCallbackI Inherited
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IloCplex::SolveCallbackI const IloN
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IloCplex::UnknownExtractableExcepti
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IloCplex::UserCutCallbackI MIPCallb
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IloCplex::VariableSelect Group opti
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IloCplex::PWLFormulation IloCplex::
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IloCplex::PWLFormulation Descriptio
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IloCplex::LazyConstraintCallbackI I
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IloCplex::UserCutCallbackI Inherite
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I NDEX ILOFRACTIONALCUTCALLBACK0 26
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ILOG CPLEX C++ API 9.0 Reference Manual

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