Decomposition Class Reference

Decompose a function or problem. More...

#include <decomp.h>

Collaboration diagram for Decomposition:

[legend]List of all members.

Public Member Functions
	Decomposition (Pointer< Param > param_=NULL)
	(Default-)Constructor.
void	set_sparsity_pattern (MinlpProblem &prob, const vector< vector< dvector > > &sample_set)
Pointer< MinlpProblem >	decompose (MinlpProblem &prob, vector< vector< dvector > > &sample_set)
	Decompose a problem.
Pointer< MinlpProblem >	decompose (MinlpProblem &prob, vector< Pointer< SplittingScheme2 > > &ss)
void	decompose (SepQcFunc &f, int block_offset, const SepQcFunc &old_f, int k, const SplittingScheme2 &ss, Pointer< dvector > primal)
Pointer< SplittingScheme2 >	get_splittingscheme (MinlpProblem &prob, int blocknr)
Pointer< SepQcFunc >	decompose (Pointer< Func > old_f, const dvector &primal)
Public Attributes
Pointer< set< int > >	I_var
Private Attributes
bool	replace_if_quadratic
	Indicates, whether a (s-)function should be replaced, if it seems to be quadratic (constant hessian).
int	avg_blocksize
	The average block size, we should try to achieve.
Pointer< Param >	param
	Parameters.

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Detailed Description

Decompose a function or problem.

Constructs also sparsity pattern and computes nonlinear and nonquadratic variable indices.

Parameters:

	Decomposition	replace quadratic options 0 or 1 default 1 If 1, (s-)functions with constant hessians are replaced by their quadratic approximation.
	Decomposition	average blocksize options integer $ 1$ default 5 level 1 The average blocksize, we should try to partition the sparsity graph into.

Definition at line 261 of file decomp.h.

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Constructor & Destructor Documentation

Decomposition::Decomposition

(

Pointer< Param >

param_ = NULL

)

[inline]

(Default-)Constructor.

Parameters:

replace_if_quadratic_

Should we replace a s-function, if it's Hessian is constant over some sample point? Default is false.

Definition at line 281 of file decomp.h.

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Member Function Documentation

void Decomposition::set_sparsity_pattern	(	MinlpProblem &	prob,
		const vector< vector< dvector > > &	sample_set
	)

Pointer<MinlpProblem> Decomposition::decompose	(	MinlpProblem &	prob,
		vector< vector< dvector > > &	sample_set
	)

Decompose a problem.

Computes sparsity patterns and indices of quadratic and nonquadratic variables. Decompose sparsity-graphs. Constructs SplittingScheme. Decompose problem according to this information.

Parameters:

	ss	A reference to a Pointer, where we can store the SplittingScheme in.
	prob	The problem to decompose.
	sample_set	Points to compute the hessian for to get sparsity pattern, needed for functions, where s[k]!=NULL.

Returns:

The decomposed problem.

Pointer<MinlpProblem> Decomposition::decompose	(	MinlpProblem &	prob,
		vector< Pointer< SplittingScheme2 > > &	ss
	)

void Decomposition::decompose	(	SepQcFunc &	f,
		int	block_offset,
		const SepQcFunc &	old_f,
		int	k,
		const SplittingScheme2 &	ss,
		Pointer< dvector >	primal
	)

Pointer<SplittingScheme2> Decomposition::get_splittingscheme	(	MinlpProblem &	prob,
		int	blocknr
	)

Pointer<SepQcFunc> Decomposition::decompose	(	Pointer< Func >	old_f,
		const dvector &	primal
	)

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Member Data Documentation

bool Decomposition::replace_if_quadratic [private]

Indicates, whether a (s-)function should be replaced, if it seems to be quadratic (constant hessian).

Definition at line 265 of file decomp.h.

int Decomposition::avg_blocksize [private]

The average block size, we should try to achieve.

Definition at line 269 of file decomp.h.

Pointer<Param> Decomposition::param [private]

Parameters.

Definition at line 273 of file decomp.h.

Pointer<set<int> > Decomposition::I_var

Definition at line 276 of file decomp.h.

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

• decomp.h

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