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OR-Tools
8.2
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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 |
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 | ||
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override |
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virtualinherited |
Accepts the given model visitor.
Reimplemented in OptimizeVar, and RegularLimit.
Definition at line 2890 of file constraint_solver.cc.
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virtualinherited |
Reimplemented in OptimizeVar.
Definition at line 2884 of file constraint_solver.cc.
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virtualinherited |
After accepting a neighbor during local search.
Definition at line 2887 of file constraint_solver.cc.
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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.
Definition at line 2880 of file constraint_solver.cc.
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virtualinherited |
After accepting an unchecked neighbor during local search.
Reimplemented in SearchLog.
Definition at line 2888 of file constraint_solver.cc.
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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.
Definition at line 2875 of file constraint_solver.cc.
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virtualinherited |
Before applying the decision.
Reimplemented in SearchLog.
Definition at line 2873 of file constraint_solver.cc.
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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.
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virtualinherited |
Just when the failure occurs.
Reimplemented in SearchLog, and DemonProfiler.
Definition at line 2876 of file constraint_solver.cc.
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virtualinherited |
Before the initial propagation.
Reimplemented in SearchLog.
Definition at line 2878 of file constraint_solver.cc.
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overridevirtualinherited |
Before calling DecisionBuilder::Next.
Reimplemented from SearchMonitor.
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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.
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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.
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inlineinherited |
Returns true if the limit has been crossed.
Definition at line 4245 of file constraint_solver.h.
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inlineoverridevirtualinherited |
Reimplemented from BaseObject.
Reimplemented in RegularLimit.
Definition at line 4268 of file constraint_solver.h.
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virtualinherited |
After completing the backtrack.
Definition at line 2877 of file constraint_solver.cc.
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virtualinherited |
After the initial propagation.
Reimplemented in SearchLog.
Definition at line 2879 of file constraint_solver.cc.
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virtualinherited |
After calling DecisionBuilder::Next, along with the returned decision.
Reimplemented in SymmetryManager.
Definition at line 2871 of file constraint_solver.cc.
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overridevirtualinherited |
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virtualinherited |
End of the search.
Reimplemented in RegularLimit, SearchLog, and LocalSearchProfiler.
Definition at line 2869 of file constraint_solver.cc.
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overridevirtual |
This method is called when the search limit is initialized.
Implements SearchLimit.
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virtualinherited |
Registers itself on the solver such that it gets notified of the search and propagation events.
Reimplemented in Trace, LocalSearchMonitorMaster, PropagationMonitor, LocalSearchMonitor, DemonProfiler, and LocalSearchProfiler.
Definition at line 2892 of file constraint_solver.cc.
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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.
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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.
Definition at line 2883 of file constraint_solver.cc.
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overridevirtual |
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virtualinherited |
When the search tree is finished.
Reimplemented in SearchLog.
Definition at line 2882 of file constraint_solver.cc.
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overridevirtualinherited |
Periodic call to check limits in long running methods.
Reimplemented from SearchMonitor.
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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.
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overridevirtualinherited |
Before refuting the decision.
Reimplemented from SearchMonitor.
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virtualinherited |
Restart the search.
Reimplemented in DemonProfiler, and LocalSearchProfiler.
Definition at line 2868 of file constraint_solver.cc.
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inlineinherited |
Definition at line 3708 of file constraint_solver.h.
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staticconstexprinherited |
Definition at line 3637 of file constraint_solver.h.