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A fractional Scheduler class based on Bienstock-Zuckerberg algorithm and CBC for solving its sub problems. this scheduler computes at each iteration a final pit and solve the lp relaxation of the original problem. More...
#include <cbc_bz.h>
Public Member Functions | |
| CBCBZ (delphos::SchedulingInstance &, const double &precision=0.00001, delphos::FinalPitSolver *fps=NULL) | |
| Creates a fractional Scheduler class based on Bienstock-Zuckerberg algorithm and CBC for solving its sub problems. More... | |
| virtual | ~CBCBZ () |
| The destructor. | |
| bool | Run () |
| Creates the model and run the BZ algorithm. | |
| void | SetRelaxedSol (CBCModel *gmodel, const vector< BlockSelection > &partition, const bool &bComputeExpectedTime) |
| Set the relaxed solution. More... | |
| const delphos::FractionalSchedule & | GetFractionalSchedule () |
| Returns the result fractional schedule. | |
 Public Member Functions inherited from delphos::BZ | |
| BZ (delphos::SchedulingInstance &si, delphos::FinalPitSolver *fps=NULL) | |
| Creates a new scheduler. More... | |
| virtual | ~BZ () |
| The destructor. | |
| virtual double * | GetRelaxedSol () |
| Returns the relaxed solution for the real variables. | |
| virtual double * | GetRelaxedDecisionSol () |
| Returns the relaxed solution for the decision variables. | |
| virtual bool | RelaxedSolToTextFile (const char *relsol_file, const char *stocks_file="") |
| Writes the relaxed solution in given text files. More... | |
| virtual bool | CheckRelaxedSol () |
| Check If the relaxed solution respect the constraints defined in the scheduling instance. | |
| vector< double > | GetExpectedTime () const |
| Returns the expected times for the blocks. | |
| virtual bool | SetExpectedTime (const string &column) |
| Sets the expected times from a block model attribute with given name. More... | |
| virtual void | StoreExpectedTimeAsAttribute (const string column) |
| Stores the expected times for each block in given column in the block model. More... | |
| virtual bool | ExpectedTimeToTextFile (const char *exptime_file) const |
| Writes the expected times in given file. More... | |
| virtual void | SetLogFile (const string &name) |
| Set the use of the log with given file name. More... | |
| double | GetRelaxedObj () |
| Get the relaxed objective. | |
| unsigned int | GetNBIterationsBZ () |
| Return the number of iterations of BZ run. | |
| const map< string, double > & | GetBZDuals () |
| Returns the dual values encountered by BZ. | |
| bool | IsFeasible () |
| Returns true only if BZ run correctly. | |
| const bool | Optimized () |
| Returns true only if BZ run correctly. | |
| virtual SchedulingInstance & | GetInstance () |
| Returns the scheduling instance. | |
| Public Member Functions inherited from delphos::FractionalScheduler | |
| FractionalScheduler (delphos::SchedulingInstance &si) | |
| Creates a new scheduler. More... | |
| virtual | ~FractionalScheduler () |
| The destructor. | |
| delphos::SchedulingInstance & | GetInstance () |
| Returns the associated scheduling instance. | |
| void | SetLPMethod (const int &lpcode) |
| Set LP method. More... | |
| virtual const double | GetDual (const string &cname) |
| Return the dual value of given constraint. More... | |
| Public Member Functions inherited from delphos::BlockModelEntity | |
| BlockModelEntity (delphos::BlockModel &bm) | |
| Creates a new block instance associated to a given block model. More... | |
| delphos::BlockModel & | GetBlockModel () |
| Retrieves the block model to which the entity is associated. More... | |
| const delphos::BlockModel & | GetBlockModel () const |
| Retrieves the block model to which the entity is associated. More... | |
A fractional Scheduler class based on Bienstock-Zuckerberg algorithm and CBC for solving its sub problems. this scheduler computes at each iteration a final pit and solve the lp relaxation of the original problem.
| delphos::CBCBZ::CBCBZ | ( | delphos::SchedulingInstance & | si, |
| const double & | precision = 0.00001, |
||
| delphos::FinalPitSolver * | fps = NULL |
||
| ) |
Creates a fractional Scheduler class based on Bienstock-Zuckerberg algorithm and CBC for solving its sub problems.
| si | The scheduling instance. |
| fps | An optional final pit solver. |
| precision | The desired precision percent for the compute. The default precision is set to 0.00001%. A value of 0 correspond to an exact compute. |
| void delphos::CBCBZ::SetRelaxedSol | ( | CBCModel * | gmodel, |
| const vector< BlockSelection > & | partition, | ||
| const bool & | bComputeExpectedTime | ||
| ) |
Set the relaxed solution.
| gmodel | The gurobi model. |
| partition | The partition. |
| bComputeExpectedTime | the flag to to compute expected times. |
1.8.7 
