Solver Class Reference

Classes
struct	SolutionInfo

Public Member Functions
	Solver ()
virtual	~Solver ()
void	Solve (int l, const QMatrix &Q, const double *p_, const schar *y_, double *alpha_, double Cp, double Cn, double eps, SolutionInfo *si, int shrinking)

Protected Types
enum	{ LOWER_BOUND, UPPER_BOUND, FREE }

Protected Member Functions
double	get_C (int i)
void	update_alpha_status (int i)
bool	is_upper_bound (int i)
bool	is_lower_bound (int i)
bool	is_free (int i)
void	swap_index (int i, int j)
void	reconstruct_gradient ()
virtual int	select_working_set (int &i, int &j)
virtual double	calculate_rho ()
virtual void	do_shrinking ()

Protected Attributes
int	active_size
schar *	y
double *	G
char *	alpha_status
double *	alpha
const QMatrix *	Q
const double *	QD
double	eps
double	Cp
double	Cn
double *	p
int *	active_set
double *	G_bar
int	l
bool	unshrink

Private Member Functions
bool	be_shrunk (int i, double Gmax1, double Gmax2)

Member Enumeration Documentation

anonymous enum

protected

Enumerator
LOWER_BOUND
UPPER_BOUND
FREE

Constructor & Destructor Documentation

Solver::Solver ( )

inline

virtual Solver::~Solver ( )

inlinevirtual

Member Function Documentation

bool Solver::be_shrunk ( int  i, double  Gmax1, double  Gmax2  )

private

References G, is_lower_bound(), is_upper_bound(), and y.

Referenced by do_shrinking().

double Solver::calculate_rho ( )

protectedvirtual

Reimplemented in Solver_NU.

References active_size, G, INF, is_lower_bound(), is_upper_bound(), max(), min(), and y.

Referenced by Solve().

void Solver::do_shrinking ( )

protectedvirtual

Reimplemented in Solver_NU.

References active_size, be_shrunk(), eps, G, INF, info(), is_lower_bound(), is_upper_bound(), l, reconstruct_gradient(), swap_index(), unshrink, and y.

Referenced by Solve().

double Solver::get_C ( int  i )

inlineprotected

References Cn, Cp, and y.

Referenced by Solve(), and update_alpha_status().

bool Solver::is_free ( int  i )

inlineprotected

References alpha_status, and FREE.

Referenced by reconstruct_gradient().

bool Solver::is_lower_bound ( int  i )

inlineprotected

References alpha_status, and LOWER_BOUND.

Referenced by be_shrunk(), Solver_NU::be_shrunk(), calculate_rho(), Solver_NU::calculate_rho(), do_shrinking(), Solver_NU::do_shrinking(), select_working_set(), Solver_NU::select_working_set(), and Solve().

bool Solver::is_upper_bound ( int  i )

inlineprotected

References alpha_status, and UPPER_BOUND.

Referenced by be_shrunk(), Solver_NU::be_shrunk(), calculate_rho(), Solver_NU::calculate_rho(), do_shrinking(), Solver_NU::do_shrinking(), select_working_set(), Solver_NU::select_working_set(), and Solve().

void Solver::reconstruct_gradient ( )

protected

References active_size, alpha, G, G_bar, QMatrix::get_Q(), info(), is_free(), l, p, and Q.

Referenced by do_shrinking(), Solver_NU::do_shrinking(), and Solve().

int Solver::select_working_set ( int &  i, int &  j  )

protectedvirtual

Reimplemented in Solver_NU.

References active_size, eps, G, QMatrix::get_Q(), INF, is_lower_bound(), is_upper_bound(), Q, QD, TAU, and y.

Referenced by Solve().

void Solver::Solve	(	int	l,
		const QMatrix &	Q,
		const double *	p_,
		const schar *	y_,
		double *	alpha_,
		double	Cp,
		double	Cn,
		double	eps,
		SolutionInfo *	si,
		int	shrinking
	)

References active_set, active_size, alpha, alpha_status, calculate_rho(), clone(), Cn, Cp, do_shrinking(), eps, G, G_bar, get_C(), QMatrix::get_Q(), QMatrix::get_QD(), info(), is_lower_bound(), is_upper_bound(), l, max(), min(), Solver::SolutionInfo::obj, p, Q, QD, reconstruct_gradient(), Solver::SolutionInfo::rho, select_working_set(), numeric::sum(), TAU, unshrink, update_alpha_status(), Solver::SolutionInfo::upper_bound_n, Solver::SolutionInfo::upper_bound_p, and y.

Referenced by Solver_NU::Solve(), solve_c_svc(), solve_epsilon_svr(), and solve_one_class().

void Solver::swap_index ( int  i, int  j  )

protected

References active_set, alpha, alpha_status, G, G_bar, p, Q, swap(), QMatrix::swap_index(), and y.

Referenced by do_shrinking(), and Solver_NU::do_shrinking().

void Solver::update_alpha_status ( int  i )

inlineprotected

References alpha, alpha_status, FREE, get_C(), LOWER_BOUND, and UPPER_BOUND.

Referenced by Solve().

Member Data Documentation

int* Solver::active_set

protected

Referenced by Solve(), and swap_index().

int Solver::active_size

protected

Referenced by calculate_rho(), Solver_NU::calculate_rho(), do_shrinking(), Solver_NU::do_shrinking(), reconstruct_gradient(), select_working_set(), Solver_NU::select_working_set(), and Solve().

double* Solver::alpha

protected

Referenced by reconstruct_gradient(), Solve(), swap_index(), and update_alpha_status().

char* Solver::alpha_status

protected

Referenced by is_free(), is_lower_bound(), is_upper_bound(), Solve(), swap_index(), and update_alpha_status().

double Solver::Cn

protected

Referenced by get_C(), and Solve().

double Solver::Cp

protected

Referenced by get_C(), and Solve().

double Solver::eps

protected

Referenced by do_shrinking(), Solver_NU::do_shrinking(), select_working_set(), Solver_NU::select_working_set(), and Solve().

double* Solver::G

protected

Referenced by be_shrunk(), Solver_NU::be_shrunk(), calculate_rho(), Solver_NU::calculate_rho(), do_shrinking(), Solver_NU::do_shrinking(), reconstruct_gradient(), select_working_set(), Solver_NU::select_working_set(), Solve(), and swap_index().

double* Solver::G_bar

protected

Referenced by reconstruct_gradient(), Solve(), and swap_index().

int Solver::l

protected

Referenced by do_shrinking(), Solver_NU::do_shrinking(), reconstruct_gradient(), and Solve().

double* Solver::p

protected

Referenced by reconstruct_gradient(), Solve(), and swap_index().

const QMatrix* Solver::Q

protected

Referenced by reconstruct_gradient(), select_working_set(), Solver_NU::select_working_set(), Solve(), and swap_index().

const double* Solver::QD

protected

Referenced by select_working_set(), Solver_NU::select_working_set(), and Solve().

bool Solver::unshrink

protected

Referenced by do_shrinking(), Solver_NU::do_shrinking(), and Solve().

schar* Solver::y

protected

Referenced by be_shrunk(), Solver_NU::be_shrunk(), calculate_rho(), Solver_NU::calculate_rho(), do_shrinking(), Solver_NU::do_shrinking(), get_C(), select_working_set(), Solver_NU::select_working_set(), Solve(), and swap_index().

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

• src/utility/libsvm/Svm.cc