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Google OR-Tools v9.14
a fast and portable software suite for combinatorial optimization
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The class of solution generators that use a vector of Booleans as focus, with a transformation from a vector of subset indices to a vector of Booleans if needed.
Definition at line 208 of file set_cover_heuristics.h.
#include <set_cover_heuristics.h>
Public Member Functions | |
BoolVectorBasedSolutionGenerator (SetCoverInvariant *inv, SetCoverInvariant::ConsistencyLevel consistency_level, absl::string_view class_name, absl::string_view name) | |
bool | NextSolution (const SubsetBoolVector &_) override |
Same as above, but with a vector of Booleans as focus. | |
bool | NextSolution (absl::Span< const SubsetIndex > focus) final |
bool | NextSolution () final |
Virtual methods that must be implemented by derived classes. | |
Public Member Functions inherited from operations_research::SetCoverSolutionGenerator | |
SetCoverSolutionGenerator (SetCoverInvariant *inv, SetCoverInvariant::ConsistencyLevel consistency_level, absl::string_view class_name, absl::string_view name) | |
virtual | ~SetCoverSolutionGenerator ()=default |
void | SetName (const absl::string_view name) |
SetCoverInvariant * | inv () const |
virtual SetCoverSolutionGenerator & | ResetLimits () |
Resets the limits to their default values. | |
SetCoverSolutionGenerator & | SetMaxIterations (int64_t max_iterations) |
Sets the maximum number of iterations. | |
int64_t | max_iterations () const |
Returns the maximum number of iterations. | |
SetCoverSolutionGenerator & | SetTimeLimitInSeconds (double seconds) |
Sets the time limit in seconds. | |
absl::Duration | run_time () const |
double | run_time_in_seconds () const |
Returns the total elapsed runtime in seconds. | |
double | run_time_in_microseconds () const |
Returns the total elapsed runtime in microseconds. | |
std::string | name () const |
Returns the name of the heuristic. | |
std::string | class_name () const |
Returns the name of the class. | |
Cost | cost () const |
Returns the current cost of the solution in the invariant. | |
bool | CheckInvariantConsistency () const |
Additional Inherited Members | |
Protected Member Functions inherited from operations_research::SetCoverSolutionGenerator | |
SetCoverModel * | model () const |
Accessors. | |
BaseInt | num_subsets () const |
double | time_limit_in_seconds () const |
The time limit in seconds. | |
Protected Attributes inherited from operations_research::SetCoverSolutionGenerator | |
absl::Duration | run_time_ |
run_time_ is an abstract duration for the time spent in NextSolution(). | |
SetCoverInvariant::ConsistencyLevel | consistency_level_ |
The consistency needed by the solution generator. |
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inlineexplicit |
Definition at line 210 of file set_cover_heuristics.h.
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inlinefinalvirtual |
Virtual methods that must be implemented by derived classes.
Computes the next full solution taking into account all the subsets.
Implements operations_research::SetCoverSolutionGenerator.
Reimplemented in operations_research::ElementDegreeSolutionGenerator, operations_research::LazyElementDegreeSolutionGenerator, operations_research::LazySteepestSearch, and operations_research::SteepestSearch.
Definition at line 222 of file set_cover_heuristics.h.
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inlinefinalvirtual |
Computes the next partial solution considering only the subsets whose indices are in focus.
Implements operations_research::SetCoverSolutionGenerator.
Reimplemented in operations_research::ElementDegreeSolutionGenerator, operations_research::LazyElementDegreeSolutionGenerator, operations_research::LazySteepestSearch, and operations_research::SteepestSearch.
Definition at line 218 of file set_cover_heuristics.h.
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inlineoverridevirtual |
Same as above, but with a vector of Booleans as focus.
Implements operations_research::SetCoverSolutionGenerator.
Reimplemented in operations_research::ElementDegreeSolutionGenerator, operations_research::LazyElementDegreeSolutionGenerator, operations_research::LazySteepestSearch, and operations_research::SteepestSearch.
Definition at line 216 of file set_cover_heuristics.h.