DualFunc Class Reference

A abstract base class for a dual function of a MinlpReform. More...

#include <dualqqp.h>

Inheritance diagram for DualFunc:

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Collaboration diagram for DualFunc:

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List of all members.

Public Member Functions
	DualFunc (MinlpProblem &qqp_, Param &param_, Pointer< ostream > out_func_p_=out_out_p, Pointer< ostream > out_func_log_p_=out_log_p)
	Constructor for a MinlpReform.
int	primal_dim () const
	The dimension of the MINLP-problem, not the dual one.
virtual dvector	get_dual_point () const =0
	Gives the last dual point.
virtual double	get_dual_val () const =0
	Gives the last dual value.
virtual dvector	get_orig_point (int i=0) const =0
	Gives the last solution point of the original problem.
virtual int	nr_of_orig_points () const
	The number of points, you can get with get_orig_point().
virtual void	set_curvature (CurvatureType ct)
virtual CurvatureType	get_curvature () const
Public Attributes
MinlpProblem &	qqp
	The MINLP problem.
vector< double >	dual_bounds
	The lower bounds of the dual variables.
Param &	param
	The parameters of the Minlp-solver.

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Detailed Description

A abstract base class for a dual function of a MinlpReform.

The dimension should be the one form the dual problem. You can get the dimension of the primal problem with primal_dim().

In addition to the methods from Func, you need to implement:

• dvector get_dual_point() to get the last dual point
• double get_dual_val() to get the last dual value
• dvector get_orig_point() to get the last point from the original problem

Definition at line 25 of file dualqqp.h.

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Constructor & Destructor Documentation

DualFunc::DualFunc	(	MinlpProblem &	qqp_,
		Param &	param_,
		Pointer< ostream >	out_func_p_ = out_out_p,
		Pointer< ostream >	out_func_log_p_ = out_log_p
	)			[inline]

Constructor for a MinlpReform.

The dual dimension is set to 0 at this moment and should be set by a derived class.

Parameters:

	qqp_	The MinlpReform, this function belongs to.
	param_	Some parameters.
	out_func_p_	Pointer to an ostream to print function-related stuff to.
	out_func_log_p_	Pointer to an ostream to print function-related logging-stuff to.

Definition at line 47 of file dualqqp.h.

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Member Function Documentation

int DualFunc::primal_dim

(

)

const [inline]

The dimension of the MINLP-problem, not the dual one.

Returns:

The dimension of the primal problem.

Definition at line 54 of file dualqqp.h.

virtual dvector DualFunc::get_dual_point

(

)

const [pure virtual]

Gives the last dual point.

Returns:

The last dual point, which was used to evaluate this function.

Implemented in QqpDualFunc.

virtual double DualFunc::get_dual_val

(

)

const [pure virtual]

Gives the last dual value.

Returns:

The last dual value, which was calculated with this function.

Implemented in QqpDualFunc.

virtual dvector DualFunc::get_orig_point

(

int

i = 0

)

const [pure virtual]

Gives the last solution point of the original problem.

In some dual functions, you can get more than one point.

Parameters:

i

The number of this point to get. 0 should give you the best one.

Returns:

The last solution point of the given problem.

See also:

get_orig_point(int)

Implemented in QqpDualFunc.

virtual int DualFunc::nr_of_orig_points

(

)

const [inline, virtual]

The number of points, you can get with get_orig_point().

Returns:

1.

Reimplemented in QqpDualFunc.

Definition at line 77 of file dualqqp.h.

virtual void DualFunc::set_curvature

(

CurvatureType

ct

)

[inline, virtual]

Implements Func.

Definition at line 79 of file dualqqp.h.

virtual CurvatureType DualFunc::get_curvature

(

)

const [inline, virtual]

Implements Func.

Definition at line 80 of file dualqqp.h.

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Member Data Documentation

MinlpProblem& DualFunc::qqp

The MINLP problem.

Definition at line 29 of file dualqqp.h.

vector<double> DualFunc::dual_bounds

The lower bounds of the dual variables.

Should be set in a derived class.

Definition at line 34 of file dualqqp.h.

Param& DualFunc::param

The parameters of the Minlp-solver.

Definition at line 38 of file dualqqp.h.

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

• dualqqp.h