SGMatrix< T > Singleton Reference

Detailed Description

template<class T>
singleton shogun::SGMatrix< T >

shogun matrix

Definition at line 26 of file base/Parameter.h.

Inheritance diagram for SGMatrix< T >:

Public Types
typedef T	Scalar

Public Member Functions
	SGMatrix ()
	SGMatrix (bool ref_counting)
	SGMatrix (T *m, index_t nrows, index_t ncols, bool ref_counting=true)
	SGMatrix (T *m, index_t nrows, index_t ncols, index_t offset)
	SGMatrix (index_t nrows, index_t ncols, bool ref_counting=true)
	SGMatrix (SGVector< T > vec)
	SGMatrix (SGVector< T > vec, index_t nrows, index_t ncols)
	SGMatrix (EigenMatrixXt &mat)
	operator EigenMatrixXtMap () const
	SGMatrix (const SGMatrix &orig)
virtual	~SGMatrix ()
T *	get_column_vector (index_t col) const
SGVector< T >	get_row_vector (index_t row) const
SGVector< T >	get_diagonal_vector () const
const T &	operator() (index_t i_row, index_t i_col) const
const T &	operator[] (index_t index) const
T &	operator() (index_t i_row, index_t i_col)
T &	operator[] (index_t index)
SGMatrix< T >	get ()
T *	data () const
uint64_t	size () const
bool	operator== (SGMatrix< T > &other)
bool	equals (SGMatrix< T > &other)
void	set_const (T const_elem)
void	zero ()
bool	is_symmetric ()
T	max_single ()
SGMatrix< T >	clone ()
void	compute_few_eigenvectors (double *matrix_, double *&eigenvalues, double *&eigenvectors, int n, int il, int iu)
void	center ()
void	remove_column_mean ()
void	display_matrix (const char *name="matrix") const
void	load (CFile *loader)
void	save (CFile *saver)
template<>
void	zero ()
template<>
bool	is_symmetric ()
template<>
bool	is_symmetric ()
template<>
bool	is_symmetric ()
template<>
bool	is_symmetric ()
template<>
complex128_t	max_single ()
template<>
void	display_matrix (const bool *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const char *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const int8_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const uint8_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const int16_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const uint16_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const int32_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const uint32_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const int64_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const uint64_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const float32_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const float64_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const floatmax_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
void	display_matrix (const complex128_t *matrix, int32_t rows, int32_t cols, const char *name, const char *prefix)
template<>
SGMatrix< char >	create_identity_matrix (index_t size, char scale)
template<>
SGMatrix< int8_t >	create_identity_matrix (index_t size, int8_t scale)
template<>
SGMatrix< uint8_t >	create_identity_matrix (index_t size, uint8_t scale)
template<>
SGMatrix< bool >	create_identity_matrix (index_t size, bool scale)
template<>
SGMatrix< int16_t >	create_identity_matrix (index_t size, int16_t scale)
template<>
SGMatrix< uint16_t >	create_identity_matrix (index_t size, uint16_t scale)
template<>
SGMatrix< int32_t >	create_identity_matrix (index_t size, int32_t scale)
template<>
SGMatrix< uint32_t >	create_identity_matrix (index_t size, uint32_t scale)
template<>
SGMatrix< int64_t >	create_identity_matrix (index_t size, int64_t scale)
template<>
SGMatrix< uint64_t >	create_identity_matrix (index_t size, uint64_t scale)
template<>
SGMatrix< float32_t >	create_identity_matrix (index_t size, float32_t scale)
template<>
SGMatrix< float64_t >	create_identity_matrix (index_t size, float64_t scale)
template<>
SGMatrix< floatmax_t >	create_identity_matrix (index_t size, floatmax_t scale)
template<>
SGMatrix< complex128_t >	create_identity_matrix (index_t size, complex128_t scale)
template<>
void	load (CFile *loader)
template<>
void	save (CFile *saver)
int32_t	ref_count ()

Static Public Member Functions
static T *	clone_matrix (const T *matrix, int32_t nrows, int32_t ncols)
static void	transpose_matrix (T *&matrix, int32_t &num_feat, int32_t &num_vec)
static void	create_diagonal_matrix (T *matrix, T *v, int32_t size)
static SGMatrix< T >	create_identity_matrix (index_t size, T scale)
static SGVector< float64_t >	compute_eigenvectors (SGMatrix< float64_t > matrix)
static double *	compute_eigenvectors (double *matrix, int n, int m)
static SGMatrix< float64_t >	matrix_multiply (SGMatrix< float64_t > A, SGMatrix< float64_t > B, bool transpose_A=false, bool transpose_B=false, float64_t scale=1.0)
static void	inverse (SGMatrix< float64_t > matrix)
	inverses square matrix in-place More...
static float64_t *	pinv (float64_t *matrix, int32_t rows, int32_t cols, float64_t *target=NULL)
static float64_t	trace (float64_t *mat, int32_t cols, int32_t rows)
static T *	get_row_sum (T *matrix, int32_t m, int32_t n)
static T *	get_column_sum (T *matrix, int32_t m, int32_t n)
static void	center_matrix (T *matrix, int32_t m, int32_t n)
static void	display_matrix (const T *matrix, int32_t rows, int32_t cols, const char *name="matrix", const char *prefix="")
static void	display_matrix (const SGMatrix< T > matrix, const char *name="matrix", const char *prefix="")
static SGMatrix< T >	get_allocated_matrix (index_t num_rows, index_t num_cols, SGMatrix< T > pre_allocated=SGMatrix< T >())

Public Attributes
T *	matrix
index_t	num_rows
index_t	num_cols

Protected Member Functions
virtual void	copy_data (const SGReferencedData &orig)
virtual void	init_data ()
virtual void	free_data ()
void	copy_refcount (const SGReferencedData &orig)
int32_t	ref ()
int32_t	unref ()

Member Typedef Documentation

typedef T Scalar

The scalar type of the matrix

Definition at line 40 of file SGMatrix.h.

Constructor & Destructor Documentation

SGMatrix

(

)

Default constructor

Definition at line 30 of file SGMatrix.cpp.

SGMatrix

(

bool

ref_counting

)

Constructor for setting reference counting while not creating the matrix in memory (use this for static SGMatrix instances)

Definition at line 36 of file SGMatrix.cpp.

SGMatrix	(	T *	m,
		index_t	nrows,
		index_t	ncols,
		bool	ref_counting = true
	)

Constructor for setting params

Definition at line 42 of file SGMatrix.cpp.

SGMatrix	(	T *	m,
		index_t	nrows,
		index_t	ncols,
		index_t	offset
	)

Wraps a matrix around an existing memory segment with an offset

Definition at line 53 of file SGMatrix.h.

SGMatrix	(	index_t	nrows,
		index_t	ncols,
		bool	ref_counting = true
	)

Constructor to create new matrix in memory

Definition at line 47 of file SGMatrix.cpp.

SGMatrix

(

SGVector< T >

vec

)

Constructor for creating a SGMatrix from a SGVector with refcounting. We do not copy the data here, just the pointer to data and the ref- count object of the SGVector (i.e. vec and this share same data and ref-count object).

This constructor assumes that the vector is the column 0 in the matrix.

Parameters

vec	The SGVector

Definition at line 54 of file SGMatrix.cpp.

SGMatrix	(	SGVector< T >	vec,
		index_t	nrows,
		index_t	ncols
	)

Constructor for creating a SGMatrix from a SGVector with refcounting. We do not copy the data here, just the pointer to data and the ref- count object of the SGVector (i.e. vec and this share same data and ref-count object).

The number of elements in the matrix MUST be same as the number of elements in the vector

Parameters

vec	The SGVector
nrows	number of rows in the matrix
ncols	number of columns in the matrix

Definition at line 63 of file SGMatrix.cpp.

SGMatrix

(

EigenMatrixXt &

mat

)

Wraps a matrix around the data of an Eigen3 matrix

Definition at line 85 of file SGMatrix.cpp.

SGMatrix

(

const SGMatrix< T > &

orig

)

Copy constructor

Definition at line 78 of file SGMatrix.cpp.

~SGMatrix ( )

virtual

Empty destructor

Definition at line 100 of file SGMatrix.cpp.

Member Function Documentation

void center

(

)

Centers the matrix, i.e. removes column/row mean from columns/rows

Definition at line 346 of file SGMatrix.cpp.

void center_matrix ( T *  matrix, int32_t  m, int32_t  n  )

static

Centers matrix (e.g. kernel matrix in feature space INPLACE

Definition at line 352 of file SGMatrix.cpp.

SGMatrix< T > clone

(

)

Clone matrix

Definition at line 260 of file SGMatrix.cpp.

T * clone_matrix ( const T *  matrix, int32_t  nrows, int32_t  ncols  )

static

Clone matrix

Definition at line 267 of file SGMatrix.cpp.

SGVector< float64_t > compute_eigenvectors ( SGMatrix< float64_t >  matrix )

static

Compute eigenvalues and eigenvectors of symmetric matrix using LAPACK

Parameters

matrix

symmetric matrix to compute eigenproblem. Is overwritten and contains orthonormal eigenvectors afterwards

Returns

eigenvalues vector with eigenvalues equal to number of rows in matrix

Definition at line 895 of file SGMatrix.cpp.

double * compute_eigenvectors ( double *  matrix, int  n, int  m  )

static

Compute eigenvalues and eigenvectors of symmetric matrix

Parameters

matrix	overwritten and contains n orthonormal eigenvectors
n
m

Returns

eigenvalues (array of length n, to be deleted[])

Definition at line 912 of file SGMatrix.cpp.

void compute_few_eigenvectors	(	double *	matrix_,
		double *&	eigenvalues,
		double *&	eigenvectors,
		int	n,
		int	il,
		int	iu
	)

Compute few eigenpairs of a symmetric matrix using LAPACK DSYEVR method (Relatively Robust Representations). Has at least O(n^3/3) complexity

Parameters

matrix_	symmetric matrix
eigenvalues	contains iu-il+1 eigenvalues in ascending order (to be free'd)
eigenvectors	contains iu-il+1 orthonormal eigenvectors of given matrix column-wise (to be free'd)
n	dimension of matrix
il	low index of requested eigenpairs (1<=il<=n)
iu	high index of requested eigenpairs (1<=il<=iu<=n)

Definition at line 934 of file SGMatrix.cpp.

void copy_data ( const SGReferencedData &  orig )

protectedvirtual

overridden to copy data

Implements SGReferencedData.

Definition at line 1027 of file SGMatrix.cpp.

void copy_refcount ( const SGReferencedData &  orig )

protectedinherited

copy refcount

Definition at line 55 of file SGReferencedData.cpp.

void create_diagonal_matrix ( T *  matrix, T *  v, int32_t  size  )

static

Create diagonal matrix

Definition at line 295 of file SGMatrix.cpp.

static SGMatrix<T> create_identity_matrix ( index_t  size, T  scale  )

static

Returns the identity matrix, scaled by a factor

Parameters

size	size of square identity matrix
scale	(optional) scaling factor

SGMatrix< char > create_identity_matrix	(	index_t	size,
		char	scale
	)

Definition at line 660 of file SGMatrix.cpp.

SGMatrix< int8_t > create_identity_matrix	(	index_t	size,
		int8_t	scale
	)

Definition at line 667 of file SGMatrix.cpp.

SGMatrix< uint8_t > create_identity_matrix	(	index_t	size,
		uint8_t	scale
	)

Definition at line 680 of file SGMatrix.cpp.

SGMatrix< bool > create_identity_matrix	(	index_t	size,
		bool	scale
	)

Definition at line 693 of file SGMatrix.cpp.

SGMatrix< int16_t > create_identity_matrix	(	index_t	size,
		int16_t	scale
	)

Definition at line 706 of file SGMatrix.cpp.

SGMatrix< uint16_t > create_identity_matrix	(	index_t	size,
		uint16_t	scale
	)

Definition at line 719 of file SGMatrix.cpp.

SGMatrix< int32_t > create_identity_matrix	(	index_t	size,
		int32_t	scale
	)

Definition at line 732 of file SGMatrix.cpp.

SGMatrix< uint32_t > create_identity_matrix	(	index_t	size,
		uint32_t	scale
	)

Definition at line 745 of file SGMatrix.cpp.

SGMatrix< int64_t > create_identity_matrix	(	index_t	size,
		int64_t	scale
	)

Definition at line 758 of file SGMatrix.cpp.

SGMatrix< uint64_t > create_identity_matrix	(	index_t	size,
		uint64_t	scale
	)

Definition at line 771 of file SGMatrix.cpp.

SGMatrix< float32_t > create_identity_matrix	(	index_t	size,
		float32_t	scale
	)

Definition at line 784 of file SGMatrix.cpp.

SGMatrix< float64_t > create_identity_matrix	(	index_t	size,
		float64_t	scale
	)

Definition at line 797 of file SGMatrix.cpp.

SGMatrix< floatmax_t > create_identity_matrix	(	index_t	size,
		floatmax_t	scale
	)

Definition at line 810 of file SGMatrix.cpp.

SGMatrix< complex128_t > create_identity_matrix	(	index_t	size,
		complex128_t	scale
	)

Definition at line 823 of file SGMatrix.cpp.

T* data

(

)

const

The data

Definition at line 181 of file SGMatrix.h.

void display_matrix

(

const char *

name = "matrix"

)

const

Display matrix

Definition at line 394 of file SGMatrix.cpp.

static void display_matrix ( const T *  matrix, int32_t  rows, int32_t  cols, const char *  name = "matrix", const char *  prefix = ""  )

static

Display matrix (useful for debugging)

void display_matrix ( const SGMatrix< T >  matrix, const char *  name = "matrix", const char *  prefix = ""  )

static

Display matrix

Definition at line 400 of file SGMatrix.cpp.

void display_matrix	(	const bool *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 408 of file SGMatrix.cpp.

void display_matrix	(	const char *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 426 of file SGMatrix.cpp.

void display_matrix	(	const int8_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 444 of file SGMatrix.cpp.

void display_matrix	(	const uint8_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 462 of file SGMatrix.cpp.

void display_matrix	(	const int16_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 480 of file SGMatrix.cpp.

void display_matrix	(	const uint16_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 498 of file SGMatrix.cpp.

void display_matrix	(	const int32_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 517 of file SGMatrix.cpp.

void display_matrix	(	const uint32_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 535 of file SGMatrix.cpp.

void display_matrix	(	const int64_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 552 of file SGMatrix.cpp.

void display_matrix	(	const uint64_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 570 of file SGMatrix.cpp.

void display_matrix	(	const float32_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 588 of file SGMatrix.cpp.

void display_matrix	(	const float64_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 606 of file SGMatrix.cpp.

void display_matrix	(	const floatmax_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 624 of file SGMatrix.cpp.

void display_matrix	(	const complex128_t *	matrix,
		int32_t	rows,
		int32_t	cols,
		const char *	name,
		const char *	prefix
	)

Definition at line 642 of file SGMatrix.cpp.

bool equals

(

SGMatrix< T > &

other

)

Operator overload for element-wise matrix comparison. Note that only numerical data is compared

Parameters

other

matrix to compare with

Returns

true iff all elements are equal

Definition at line 118 of file SGMatrix.cpp.

void free_data ( )

protectedvirtual

overridden to free data

Implements SGReferencedData.

Definition at line 1043 of file SGMatrix.cpp.

SGMatrix<T> get

(

)

Get the matrix (no copying is done here)

Returns

the refcount increased matrix

Definition at line 175 of file SGMatrix.h.

SGMatrix< T > get_allocated_matrix ( index_t  num_rows, index_t  num_cols, SGMatrix< T >  pre_allocated = SGMatrix<T>()  )

static

Simple helper method that returns a matrix with allocated memory for a given size. A pre_allocated one can optionally be specified in order to use that. Basically just for having dimension check encapsulated.

Parameters

num_rows	rows of returned matrix
num_cols	columns of returned matrix
pre_allocated	optional matrix that is returned instead of new matrix. Make sure dimensions match

Returns

matrix with allocated memory of specified size

Definition at line 997 of file SGMatrix.cpp.

T * get_column_sum ( T *  matrix, int32_t  m, int32_t  n  )

static

Sums up all columns of a matrix and returns the resulting columnvector

Definition at line 333 of file SGMatrix.cpp.

T* get_column_vector

(

index_t

col

)

const

Get a column vector

Parameters

col	column index

Returns

the column vector for index col

Definition at line 115 of file SGMatrix.h.

SGVector< T > get_diagonal_vector

(

)

const

Get a main diagonal vector. Matrix is not required to be square.

Returns

main diagonal vector

Definition at line 1099 of file SGMatrix.cpp.

T * get_row_sum ( T *  matrix, int32_t  m, int32_t  n  )

static

Sums up all rows of a matrix and returns the resulting rowvector

Definition at line 320 of file SGMatrix.cpp.

SGVector< T > get_row_vector

(

index_t

row

)

const

Get a row vector

Parameters

row

row index

Returns

row vector

Definition at line 1088 of file SGMatrix.cpp.

void init_data ( )

protectedvirtual

overridden to initialize empty data

Implements SGReferencedData.

Definition at line 1035 of file SGMatrix.cpp.

void inverse ( SGMatrix< float64_t >  matrix )

static

inverses square matrix in-place

Inverses square matrix in-place

Definition at line 885 of file SGMatrix.cpp.

bool is_symmetric

(

)

Definition at line 170 of file SGMatrix.cpp.

bool is_symmetric

(

)

Definition at line 187 of file SGMatrix.cpp.

bool is_symmetric

(

)

Definition at line 204 of file SGMatrix.cpp.

bool is_symmetric

(

)

Checks whether the matrix is symmetric or not. The equality check is performed using '==' operators for discrete types (int, char, bool) and using CMath::fequals method for floating types (float, double, long double, std::complex<double>) with default espilon values from std::numeric_limits

Returns

whether the matrix is symmetric

Definition at line 154 of file SGMatrix.cpp.

bool is_symmetric

(

)

Definition at line 221 of file SGMatrix.cpp.

void load

(

CFile *

loader

)

Load matrix from file

Parameters

loader

File object via which to load data

Definition at line 1052 of file SGMatrix.cpp.

void load

(

CFile *

loader

)

Definition at line 1067 of file SGMatrix.cpp.

SGMatrix< float64_t > matrix_multiply ( SGMatrix< float64_t >  A, SGMatrix< float64_t >  B, bool  transpose_A = false, bool  transpose_B = false, float64_t  scale = 1.0  )

static

Computes scale* A*B, where A and B may be transposed. Asserts for matching inner dimensions.

Parameters

A	matrix A
transpose_A	optional whether A should be transposed before
B	matrix B
transpose_B	optional whether B should be transposed before
scale	optional scaling factor for result

Definition at line 947 of file SGMatrix.cpp.

T max_single

(

)

Returns

the maximum single element of the matrix

Definition at line 240 of file SGMatrix.cpp.

complex128_t max_single

(

)

Definition at line 253 of file SGMatrix.cpp.

operator EigenMatrixXtMap

(

)

const

Wraps an Eigen3 matrix around the data of this matrix

Definition at line 93 of file SGMatrix.cpp.

const T& operator()	(	index_t	i_row,
		index_t	i_col
	)		const

Operator overload for matrix read only access

Parameters

i_row
i_col

Definition at line 138 of file SGMatrix.h.

T& operator()	(	index_t	i_row,
		index_t	i_col
	)

Operator overload for matrix r/w access

Parameters

i_row
i_col

Definition at line 156 of file SGMatrix.h.

bool operator==

(

SGMatrix< T > &

other

)

Check for pointer identity

Definition at line 106 of file SGMatrix.cpp.

const T& operator[]

(

index_t

index

)

const

Operator overload for matrix read only access

Parameters

index

to access

Definition at line 147 of file SGMatrix.h.

T& operator[]

(

index_t

index

)

Operator overload for matrix r/w access

Parameters

index

to access

Definition at line 165 of file SGMatrix.h.

float64_t * pinv ( float64_t *  matrix, int32_t  rows, int32_t  cols, float64_t *  target = NULL  )

static

Return the pseudo inverse for matrix when matrix has shape (rows, cols) the pseudo inverse has (cols, rows)

Definition at line 846 of file SGMatrix.cpp.

int32_t ref ( )

protectedinherited

increase reference counter

Returns

reference count

Definition at line 64 of file SGReferencedData.cpp.

int32_t ref_count ( )

inherited

display reference counter

Returns

reference count

Definition at line 41 of file SGReferencedData.cpp.

void remove_column_mean

(

)

Remove column mean

Definition at line 377 of file SGMatrix.cpp.

void save

(

CFile *

saver

)

Save matrix to file

Parameters

saver

File object via which to save data

Definition at line 1073 of file SGMatrix.cpp.

void save

(

CFile *

saver

)

Definition at line 1082 of file SGMatrix.cpp.

void set_const

(

T

const_elem

)

Set matrix to a constant

Definition at line 133 of file SGMatrix.cpp.

uint64_t size

(

)

const

The size

Definition at line 187 of file SGMatrix.h.

float64_t trace ( float64_t *  mat, int32_t  cols, int32_t  rows  )

static

Compute trace

Definition at line 310 of file SGMatrix.cpp.

void transpose_matrix ( T *&  matrix, int32_t &  num_feat, int32_t &  num_vec  )

static

Transpose matrix

Definition at line 277 of file SGMatrix.cpp.

int32_t unref ( )

protectedinherited

decrement reference counter and deallocate object if refcount is zero before or after decrementing it

Returns

reference count

Definition at line 84 of file SGReferencedData.cpp.

void zero

(

)

Definition at line 147 of file SGMatrix.cpp.

void zero

(

)

fill matrix with zeros

Definition at line 140 of file SGMatrix.cpp.

Member Data Documentation

T* matrix

matrix

Definition at line 374 of file SGMatrix.h.

index_t num_cols

number of columns of matrix

Definition at line 378 of file SGMatrix.h.

index_t num_rows

number of rows of matrix

Definition at line 376 of file SGMatrix.h.

---

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

• base/Parameter.h
• SGMatrix.h
• SGMatrix.cpp