Abstracts a Gurobi LP solver that can solve a scheduling instance. More...

#include <gurobi_fractional_scheduler.h>

Inheritance diagram for delphos::GurobiFractionalScheduler:

Collaboration diagram for delphos::GurobiFractionalScheduler:

Public Member Functions
	GurobiFractionalScheduler (delphos::SchedulingInstance &si)
	Creates a gurobi fractional scheduler with given scheduling instance. More...

virtual	~GurobiFractionalScheduler ()
	The destructor.

virtual bool	Run ()
	Generates the model in Gurobi and optimize it. More...

bool	CreateModel ()
	Inits the solver and load the model in gurobi. More...

void	WriteLP (const string outfile)
	Writes the LP model in given file. More...

void	WriteSol (const string outfile)
	Writes the solution in given file. More...

double	GetSol (const BlockIndexType &block_index, const unsigned int &period, const unsigned int &destination)
	Returns the solution value for a block period and destination. More...

GurobiModel &	GetMathematicalModel ()
	Returns the mathematical model.

double	GetObjValue ()
	Returns the objective value of the optimized model.

void	SetOptimizationSense (const Model::OptimizationSense &sense)
	Set the sense of the optimization model. More...

void	SetLogFile (const string &name)
	Set the use of the log with given file name. More...

const bool	IsStock ()
	Return true only if the inner scheduling instance has stoks.

const double	GetDual (const string &cname)
	Returns the dual value of given constraint. More...

void	ComputeExpectedTime (const string column)
	Computes the expected times. More...

const delphos::FractionalSchedule &	GetFractionalSchedule ()
	Returns the result fractional schedule.

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.

virtual const bool	Optimized ()
	Returns true only if the scheduler has run succesfully.

void	SetLPMethod (const int &lpcode)
	Set LP method. 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...

Detailed Description

Abstracts a Gurobi LP solver that can solve a scheduling instance.

Constructor & Destructor Documentation

delphos::GurobiFractionalScheduler::GurobiFractionalScheduler ( delphos::SchedulingInstance & si )

Creates a gurobi fractional scheduler with given scheduling instance.

Parameters

si	The scheduling instance of the gurobi MIP scheduler.

Member Function Documentation

void delphos::GurobiFractionalScheduler::ComputeExpectedTime ( const string column )

virtual

Computes the expected times.

Parameters

column The column name in which the expected times are saved.

Reimplemented from delphos::FractionalScheduler.

bool delphos::GurobiFractionalScheduler::CreateModel ( )

Inits the solver and load the model in gurobi.

Return true if the model has been successfully loaded in gurobi.

const double delphos::GurobiFractionalScheduler::GetDual ( const string & cname )

virtual

Returns the dual value of given constraint.

Parameters

cname The name of the constraint of which the dual value is returned.

the cname of constraint of original name name can be name_lower and name_upper that corresponds to lower bound constraint and upper bound constraint.

Reimplemented from delphos::FractionalScheduler.

double delphos::GurobiFractionalScheduler::GetSol	(	const BlockIndexType &	block_index,
		const unsigned int &	period,
		const unsigned int &	destination
	)

Returns the solution value for a block period and destination.

Parameters

block_index	The index of the block in the block model.
period	The period.
destination	The destination.

bool delphos::GurobiFractionalScheduler::Run ( )

virtual

Generates the model in Gurobi and optimize it.

Return true only if the model has been successfully optimized.

Reimplemented from delphos::FractionalScheduler.

void delphos::GurobiFractionalScheduler::SetLogFile ( const string & name )

virtual

Set the use of the log with given file name.

Parameters

name	The name of the log file.

Reimplemented from delphos::FractionalScheduler.

void delphos::GurobiFractionalScheduler::SetOptimizationSense ( const Model::OptimizationSense & sense )

Set the sense of the optimization model.

Parameters

sense The sense of the optimization. The sense can be Model::OptimizationSense::MINIMIZATION or Model::OptimizationSense::MAXIMIZATION.

void delphos::GurobiFractionalScheduler::WriteLP ( const string outfile )

Writes the LP model in given file.

Parameters

outfile The name of the outfile in which the model is writen in LP format. Return true only if the model has been successfully writen in the LP format in given file. This method can only be used after the method InitSolver.

void delphos::GurobiFractionalScheduler::WriteSol ( const string outfile )

Writes the solution in given file.

Parameters

outfile The name of the outfile in which the solution of the model is writen. Return true only if the solution of the model has been successfully writen in given file. This method can only be used after the method RunSolver.

The documentation for this class was generated from the following files:

/home/gmorales/dev/MineLink/BlockScheduling/core/trunk/solvers/scheduling/fractional_scheduler/gurobi_fractional_scheduler.h
/home/gmorales/dev/MineLink/BlockScheduling/core/trunk/solvers/scheduling/fractional_scheduler/gurobi_fractional_scheduler.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation