vnl_lbfgs Class Reference

#include <vnl_lbfgs.h>

Inheritance diagram for vnl_lbfgs:

[legend]Collaboration diagram for vnl_lbfgs:

[legend]List of all members.

Public Methods
	vnl_lbfgs ()
	vnl_lbfgs (vnl_cost_function &f)
bool	minimize (vnl_vector< double > &x)
Public Attributes
int	memory
double	line_search_accuracy
double	default_step_length

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Detailed Description

Limited memory Broyden Fletcher Goldfarb Shannon minimization. More complete description ???

Definition at line 22 of file vnl_lbfgs.h.

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Constructor & Destructor Documentation

vnl_lbfgs::vnl_lbfgs (    )

vnl_lbfgs::vnl_lbfgs (  vnl_cost_function &    f )

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Member Function Documentation

bool vnl_lbfgs::minimize (  vnl_vector< double > &    x )

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Member Data Documentation

double vnl_lbfgs::default_step_length

Default step length in line search. If, on tracing, the STP is always 1, then you could try setting this to a higher value to see how far along the gradient the minimum typically is. Then set this to a number just below that to get maximally far with the single evaluation. Definition at line 46 of file vnl_lbfgs.h.

double vnl_lbfgs::line_search_accuracy

Accuracy of line search. If function evaluations are cheap wrt the actual minimization steps, change to 0.1, from default of 0.9; Definition at line 38 of file vnl_lbfgs.h.

int vnl_lbfgs::memory

Number of direction vectors to keep. Sensible values are from about 5 onwards. Definition at line 32 of file vnl_lbfgs.h.

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

• vnl_lbfgs.h

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