C++ Reference
C++ Reference: Routing
Detailed Description
Definition at line 4353 of file constraint_solver.h.
Public Member Functions | |
ImprovementSearchLimit (Solver *const s, IntVar *objective_var, bool maximize, double objective_scaling_factor, double objective_offset, double improvement_rate_coefficient, int improvement_rate_solutions_distance) | |
~ImprovementSearchLimit () override | |
void | Copy (const SearchLimit *const limit) override |
Copy a limit. More... | |
SearchLimit * | MakeClone () const override |
Allocates a clone of the limit. More... | |
bool | Check () override |
This method is called to check the status of the limit. More... | |
bool | AtSolution () override |
This method is called when a valid solution is found. More... | |
void | Init () override |
This method is called when the search limit is initialized. More... | |
bool | crossed () const |
Returns true if the limit has been crossed. More... | |
void | EnterSearch () override |
Internal methods. More... | |
void | BeginNextDecision (DecisionBuilder *const b) override |
Before calling DecisionBuilder::Next. More... | |
void | PeriodicCheck () override |
Periodic call to check limits in long running methods. More... | |
void | RefuteDecision (Decision *const d) override |
Before refuting the decision. More... | |
std::string | DebugString () const override |
virtual void | RestartSearch () |
Restart the search. More... | |
virtual void | ExitSearch () |
End of the search. More... | |
virtual void | EndNextDecision (DecisionBuilder *const b, Decision *const d) |
After calling DecisionBuilder::Next, along with the returned decision. More... | |
virtual void | ApplyDecision (Decision *const d) |
Before applying the decision. More... | |
virtual void | AfterDecision (Decision *const d, bool apply) |
Just after refuting or applying the decision, apply is true after Apply. More... | |
virtual void | BeginFail () |
Just when the failure occurs. More... | |
virtual void | EndFail () |
After completing the backtrack. More... | |
virtual void | BeginInitialPropagation () |
Before the initial propagation. More... | |
virtual void | EndInitialPropagation () |
After the initial propagation. More... | |
virtual bool | AcceptSolution () |
This method is called when a solution is found. More... | |
virtual void | NoMoreSolutions () |
When the search tree is finished. More... | |
virtual bool | LocalOptimum () |
When a local optimum is reached. More... | |
virtual bool | AcceptDelta (Assignment *delta, Assignment *deltadelta) |
virtual void | AcceptNeighbor () |
After accepting a neighbor during local search. More... | |
virtual void | AcceptUncheckedNeighbor () |
After accepting an unchecked neighbor during local search. More... | |
virtual bool | IsUncheckedSolutionLimitReached () |
Returns true if the limit of solutions has been reached including unchecked solutions. More... | |
Solver * | solver () const |
virtual int | ProgressPercent () |
Returns a percentage representing the propress of the search before reaching limits. More... | |
virtual void | Accept (ModelVisitor *const visitor) const |
Accepts the given model visitor. More... | |
virtual void | Install () |
Registers itself on the solver such that it gets notified of the search and propagation events. More... | |
Static Public Attributes | |
static constexpr int | kNoProgress = -1 |
Constructor & Destructor Documentation
◆ ImprovementSearchLimit()
ImprovementSearchLimit | ( | Solver *const | s, |
IntVar * | objective_var, | ||
bool | maximize, | ||
double | objective_scaling_factor, | ||
double | objective_offset, | ||
double | improvement_rate_coefficient, | ||
int | improvement_rate_solutions_distance | ||
) |
◆ ~ImprovementSearchLimit()
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override |
Member Function Documentation
◆ Accept()
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virtualinherited |
Accepts the given model visitor.
Reimplemented in OptimizeVar, and RegularLimit.
◆ AcceptDelta()
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virtualinherited |
Reimplemented in OptimizeVar.
◆ AcceptNeighbor()
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virtualinherited |
After accepting a neighbor during local search.
◆ AcceptSolution()
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virtualinherited |
This method is called when a solution is found.
It asserts whether the solution is valid. A value of false indicates that the solution should be discarded.
Reimplemented in OptimizeVar.
◆ AcceptUncheckedNeighbor()
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virtualinherited |
After accepting an unchecked neighbor during local search.
Reimplemented in SearchLog.
◆ AfterDecision()
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virtualinherited |
Just after refuting or applying the decision, apply is true after Apply.
This is called only if the Apply() or Refute() methods have not failed.
◆ ApplyDecision()
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virtualinherited |
Before applying the decision.
Reimplemented in SearchLog.
◆ AtSolution()
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overridevirtual |
This method is called when a valid solution is found.
If the return value is true, then search will resume after. If the result is false, then search will stop there.
Reimplemented from SearchMonitor.
◆ BeginFail()
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virtualinherited |
Just when the failure occurs.
Reimplemented in SearchLog.
◆ BeginInitialPropagation()
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virtualinherited |
Before the initial propagation.
Reimplemented in SearchLog.
◆ BeginNextDecision()
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overridevirtualinherited |
Before calling DecisionBuilder::Next.
Reimplemented from SearchMonitor.
◆ Check()
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overridevirtual |
This method is called to check the status of the limit.
A return value of true indicates that we have indeed crossed the limit. In that case, this method will not be called again and the remaining search will be discarded.
Implements SearchLimit.
◆ Copy()
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overridevirtual |
Copy a limit.
Warning: leads to a direct (no check) downcasting of 'limit' so one needs to be sure both SearchLimits are of the same type.
Implements SearchLimit.
◆ crossed()
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inlineinherited |
Returns true if the limit has been crossed.
Definition at line 4245 of file constraint_solver.h.
◆ DebugString()
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inlineoverridevirtualinherited |
Reimplemented from BaseObject.
Reimplemented in RegularLimit.
Definition at line 4268 of file constraint_solver.h.
◆ EndFail()
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virtualinherited |
After completing the backtrack.
◆ EndInitialPropagation()
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virtualinherited |
After the initial propagation.
Reimplemented in SearchLog.
◆ EndNextDecision()
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virtualinherited |
After calling DecisionBuilder::Next, along with the returned decision.
◆ EnterSearch()
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overridevirtualinherited |
Internal methods.
Reimplemented from SearchMonitor.
◆ ExitSearch()
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virtualinherited |
End of the search.
Reimplemented in RegularLimit, and SearchLog.
◆ Init()
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overridevirtual |
This method is called when the search limit is initialized.
Implements SearchLimit.
◆ Install()
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virtualinherited |
Registers itself on the solver such that it gets notified of the search and propagation events.
Reimplemented in PropagationMonitor, and LocalSearchMonitor.
◆ IsUncheckedSolutionLimitReached()
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inlinevirtualinherited |
Returns true if the limit of solutions has been reached including unchecked solutions.
Reimplemented in RegularLimit.
Definition at line 3706 of file constraint_solver.h.
◆ LocalOptimum()
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virtualinherited |
When a local optimum is reached.
If 'true' is returned, the last solution is discarded and the search proceeds with the next one.
◆ MakeClone()
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overridevirtual |
Allocates a clone of the limit.
Implements SearchLimit.
◆ NoMoreSolutions()
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virtualinherited |
When the search tree is finished.
Reimplemented in SearchLog.
◆ PeriodicCheck()
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overridevirtualinherited |
Periodic call to check limits in long running methods.
Reimplemented from SearchMonitor.
◆ ProgressPercent()
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inlinevirtualinherited |
Returns a percentage representing the propress of the search before reaching limits.
Reimplemented in RegularLimit.
Definition at line 3715 of file constraint_solver.h.
◆ RefuteDecision()
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overridevirtualinherited |
Before refuting the decision.
Reimplemented from SearchMonitor.
◆ RestartSearch()
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virtualinherited |
Restart the search.
◆ solver()
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inlineinherited |
Definition at line 3708 of file constraint_solver.h.
Member Data Documentation
◆ kNoProgress
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staticconstexprinherited |
Definition at line 3637 of file constraint_solver.h.
The documentation for this class was generated from the following file: