METSlib
0.6
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An abstract search. More...
#include <abstract-search.hh>
Public Types | |
enum | { MOVE_MADE = 0, IMPROVEMENT_MADE, ITERATION_BEGIN, ITERATION_END, LAST } |
Public Member Functions | |
abstract_search (feasible_solution &working, solution_recorder &recorder, move_manager_type &moveman) | |
Set some common values needed for neighborhood based metaheuristics. More... | |
abstract_search (const abstract_search< move_manager_type > &) | |
purposely not implemented (see Effective C++) | |
abstract_search & | operator== (const abstract_search< move_manager_type > &) |
purposely not implemented (see Effective C++) | |
virtual | ~abstract_search () |
Virtual destructor. | |
virtual void | throw (no_moves_error)=0 |
This method starts the search. More... | |
const solution_recorder & | recorder () const |
The solution recorder instance. | |
const feasible_solution & | working () const |
The current working solution. | |
feasible_solution & | working () |
const move & | current_move () const |
The last move made. | |
move & | current_move () |
The last move made. | |
const move_manager_type & | move_manager () const |
The move manager used by this search. | |
move_manager_type & | move_manager () |
The move manager used by this search. | |
int | step () const |
The current step of the algorithm (to be used by the observers). More... | |
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virtual void | attach (observer< abstract_search< move_manager_type > > &o) |
Attach a new observer to this subject. More... | |
virtual void | detach (observer< abstract_search< move_manager_type > > &o) |
Detach a new observer to this subject. More... | |
virtual void | notify () |
Notify all attached observers. More... | |
Protected Attributes | |
solution_recorder & | solution_recorder_m |
feasible_solution & | working_solution_m |
move_manager_type & | moves_m |
move_manager_type::iterator | current_move_m |
int | step_m |
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std::set< observer < abstract_search < move_manager_type > > * > | observers_m |
An abstract search.
anonymous enum |
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inline |
Set some common values needed for neighborhood based metaheuristics.
working | The starting point solution (this will be modified during search as the working solution) |
recorder | A solution recorder instance used to record the best solution found |
moveman | A problem specific implementation of the move_manager_type used to generate the neighborhood. |
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inline |
The current step of the algorithm (to be used by the observers).
When you implement a new type of search you should set step_m protected variable to the status of the algorithm (0 = "MOVE_MADE", 1 = "IMPROVEMENT_MADE", etc.).
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pure virtual |
This method starts the search.
Remember that this is a minimization.
An exception mets::no_moves_error can be risen when no move is possible.
Implemented in mets::tabu_search< move_manager_type >, mets::simulated_annealing< move_manager_type >, and mets::local_search< move_manager_type >.
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