ILOG CPLEX C++ API 9.0 Reference Manual

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IloCplex::SearchLimitI creates a goal limitGoal which branches as specified by goal1 until the limit specified by limit is reached. Only the nodes created by goal1 (or any of the goals created by it later) are subjected to the search limit. For example, if you created two branches with the goal OrGoal(limitGoal, goal2); only the subtree defined by goal1 is subject to the search limit limit; the subtree defined by goal2 is not. The ability to specify search limits for subtrees means that it is possible for certain branches to be subject to more than one search limit. Nodes with multiple search limits attached to them are processed only if none of the search limits has been reached, or, in other words, if all the search limits return IloFalse when method check is called by IloCplex. Each time CPLEX uses a search limit, it is duplicated first. If you use the same instance of your limit in different branches, it will be duplicated first, the copy will be passed to the corresponding node, and init method will be called on the copy. See Also Constructors Methods IloCplex, IloCplex::SearchLimit public SearchLimitI() The default constructor creates a new instance of SearchLimitI. public virtual IloBool check() This method is called for every node subjected to the invoking search limit before evaluating the node. If it returns IloTrue, the node is pruned, or, equivalently, the search below that node is discontinued. Thus, users implementing search limits must implement this method to return IloTrue if the search limit has been reached and IloFalse otherwise. public virtual SearchLimitI * duplicateLimit() This method is called internally to duplicate the current search limit. Users must implement it in a subclass to return a copy of the invoking object. public virtual void init() This method is called by IloCplex right before the first time check is called for a node and allows you to initialize the limit based on that node. ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 216
IloCplex::SimplexCallbackI IloCplex::SimplexCallbackI Category Inner Class InheritancePath Definition File Include Files ilocplexi.h ilcplex/ilocplex.h protected Constructor Summary SimplexCallbackI() Inherited methods from IloCplex::ContinuousCallbackI ContinuousCallbackI::getDualInfeasibility, ContinuousCallbackI::getInfeasibility, ContinuousCallbackI::getNiterations, ContinuousCallbackI::getObjValue, ContinuousCallbackI::isDualFeasible, ContinuousCallbackI::isFeasible Inherited methods from IloCplex::CallbackI CallbackI::abort, CallbackI::duplicateCallback, CallbackI::getEnv, CallbackI::getModel, CallbackI::getNcols, CallbackI::getNQCs, CallbackI::getNrows, CallbackI::main Description An instance of the class IloCplex::SimplexCallbackI represents a user-written callback in an application that uses an instance of IloCplex to solve a problem by means of the simplex optimizer. For more information on the simplex optimizer, see the ILOG CPLEX C++ API 9.0 REFERENCE M ANUAL 217
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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
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IloCplex public const IloConstraint
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IloCplex This method deletes all la
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IloCplex to use for the constraint
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IloCplex public IloCplex::CplexStat
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IloCplex Note:CPLEX resizes these a
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IloCplex This method returns the nu
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IloCplex public IloCplex::PWLFormul
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IloCplex public void getValues(cons
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IloCplex This method creates and re
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IloCplex This method sets the prefe
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IloCplex its subgoals. See the conc
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IloCplex::Algorithm IloCplex::Algor
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IloCplex::BarrierCallbackI IloCplex
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IloCplex::BasisStatus IloCplex::Bas
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IloCplex::BoolParam IloCplex::BoolP
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IloCplex::BranchCallbackI IloCplex:
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IloCplex::BranchCallbackI ControlCa
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IloCplex::BranchCallbackI IloCplex:
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IloCplex::BranchCallbackI NodeData
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IloCplex::BranchCallbackI no branch
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IloCplex::BranchDirection IloCplex:
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IloCplex::Callback IloCplex::Callba
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IloCplex::CallbackI IloCplex::Callb
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IloCplex::CallbackI callbacks can a
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Callback::Type Callback::Type Categ
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IloCplex::ContinuousCallbackI Descr
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IloCplex::ControlCallbackI IloCplex
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IloCplex::ControlCallbackI MIPCallb
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IloCplex::ControlCallbackI This met
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IloCplex::ControlCallbackI For each
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ControlCallbackI::IntegerFeasibilit
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IloCplex::CplexStatus See also the
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IloCplex::CrossoverCallbackI IloCpl
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IloCplex::CutCallbackI IloCplex::Cu
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IloCplex::CutCallbackI from a user-
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IloCplex::DisjunctiveCutCallbackI I
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IloCplex::DualPricing IloCplex::Dua
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IloCplex::FlowMIRCutCallbackI IloCp
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IloCplex::FractionalCutCallbackI Il
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IloCplex::Goal IloCplex::Goal Categ
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IloCplex::GoalI IloCplex::GoalI Cat
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IloCplex::GoalI public IloInt publi
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IloCplex::GoalI Methods public void
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IloCplex::GoalI Returns the solutio
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IloCplex::GoalI const IloNumVarArra
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IloCplex::GoalI Returns the branch
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IloCplex::GoalI public IloBool isIn
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GoalI::BranchType GoalI::BranchType
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GoalI::IntegerFeasibilityArray Goal
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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
Page 166 and 167: IloCplex::IntParam = CPX_PARAM_COLR
Page 168 and 169: IloCplex::IntParam = CPX_PARAM_FRAC
Page 170 and 171: IloCplex::InvalidCutException IloCp
Page 172 and 173: IloCplex::LazyConstraintCallbackI M
Page 174 and 175: IloCplex::MIPCallbackI protected Il
Page 176 and 177: IloCplex::MIPCallbackI IloCplex::No
Page 178 and 179: IloCplex::MIPCallbackI Returns the
Page 180 and 181: MIPCallbackI::NodeData MIPCallbackI
Page 182 and 183: IloCplex::MIPEmphasisType = CPX_MIP
Page 184 and 185: IloCplex::MultipleObjException IloC
Page 186 and 187: IloCplex::NetworkCallbackI The meth
Page 188 and 189: IloCplex::NodeCallbackI protected v
Page 190 and 191: IloCplex::NodeCallbackI protected I
Page 192 and 193: IloCplex::NodeEvaluator IloCplex::N
Page 194 and 195: IloCplex::NodeEvaluatorI IloCplex::
Page 196 and 197: IloCplex::NodeEvaluatorI branch, 0
Page 198 and 199: IloCplex::NodeSelect IloCplex::Node
Page 200 and 201: IloCplex::NumParam = CPX_PARAM_EPOP
Page 202 and 203: IloCplex::PWLFormulation IloCplex::
Page 204 and 205: IloCplex::PresolveCallbackI model,
Page 206 and 207: IloCplex::ProbingCallbackI IloCplex
Page 208 and 209: IloCplex::ProbingCallbackI This met
Page 210 and 211: IloCplex::Quality Primalobj, Primal
Page 212 and 213: IloCplex::Quality = CPX_SUM_X SumSc
Page 214 and 215: IloCplex::SearchLimit The default c
Page 218 and 219: IloCplex::SimplexCallbackI ILOG CPL
Page 220 and 221: IloCplex::SolveCallbackI Inherited
Page 222 and 223: IloCplex::SolveCallbackI const IloN
Page 224 and 225: IloCplex::UnknownExtractableExcepti
Page 226 and 227: IloCplex::UserCutCallbackI MIPCallb
Page 228 and 229: IloCplex::VariableSelect Group opti
Page 230 and 231: IloCplex::PWLFormulation IloCplex::
Page 232 and 233: IloCplex::PWLFormulation Descriptio
Page 234 and 235: IloCplex::LazyConstraintCallbackI I
Page 236 and 237: IloCplex::UserCutCallbackI Inherite
Page 238: I NDEX ILOFRACTIONALCUTCALLBACK0 26
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