CRealFileFeatures Class Reference

Detailed Description

The class RealFileFeatures implements a dense double-precision floating point matrix from a file.

It inherits its functionality from CSimpleFeatures, which should be consulted for further reference.

Definition at line 25 of file RealFileFeatures.h.

Inheritance diagram for CRealFileFeatures:

Public Member Functions
	CRealFileFeatures ()
	CRealFileFeatures (int32_t size, FILE *file)
	CRealFileFeatures (int32_t size, char *filename)
	CRealFileFeatures (const CRealFileFeatures &orig)
virtual	~CRealFileFeatures ()
virtual float64_t *	load_feature_matrix ()
int32_t	get_label (int32_t idx)
virtual const char *	get_name () const
Public Member Functions inherited from CSimpleFeatures< float64_t >
	CSimpleFeatures (int32_t size=0)
	CSimpleFeatures (const CSimpleFeatures &orig)
	CSimpleFeatures (SGMatrix< float64_t > matrix)
	CSimpleFeatures (float64_t *src, int32_t num_feat, int32_t num_vec)
	CSimpleFeatures (CFile *loader)
virtual CFeatures *	duplicate () const
virtual	~CSimpleFeatures ()
void	free_feature_matrix ()
void	free_features ()
float64_t *	get_feature_vector (int32_t num, int32_t &len, bool &dofree)
SGVector< float64_t >	get_feature_vector (int32_t num)
void	set_feature_vector (SGVector< float64_t > vector, int32_t num)
void	free_feature_vector (float64_t *feat_vec, int32_t num, bool dofree)
void	free_feature_vector (SGVector< float64_t > vec, int32_t num)
void	vector_subset (int32_t *idx, int32_t idx_len)
void	feature_subset (int32_t *idx, int32_t idx_len)
void	get_feature_matrix (float64_t **dst, int32_t *num_feat, int32_t *num_vec)
SGMatrix< float64_t >	get_feature_matrix ()
float64_t *	get_feature_matrix (int32_t &num_feat, int32_t &num_vec)
SGMatrix< float64_t >	steal_feature_matrix ()
void	set_feature_matrix (SGMatrix< float64_t > matrix)
virtual void	set_feature_matrix (float64_t *fm, int32_t num_feat, int32_t num_vec)
CSimpleFeatures< float64_t > *	get_transposed ()
float64_t *	get_transposed (int32_t &num_feat, int32_t &num_vec)
virtual void	copy_feature_matrix (SGMatrix< float64_t > src)
void	obtain_from_dot (CDotFeatures *df)
virtual bool	apply_preprocessor (bool force_preprocessing=false)
virtual int32_t	get_size ()
virtual int32_t	get_num_vectors () const
int32_t	get_num_features ()
void	set_num_features (int32_t num)
void	set_num_vectors (int32_t num)
void	initialize_cache ()
virtual EFeatureClass	get_feature_class ()
virtual EFeatureType	get_feature_type ()
virtual bool	reshape (int32_t p_num_features, int32_t p_num_vectors)
virtual int32_t	get_dim_feature_space () const
virtual float64_t	dot (int32_t vec_idx1, CDotFeatures *df, int32_t vec_idx2)
virtual float64_t	dense_dot (int32_t vec_idx1, const float64_t *vec2, int32_t vec2_len)
virtual void	add_to_dense_vec (float64_t alpha, int32_t vec_idx1, float64_t *vec2, int32_t vec2_len, bool abs_val=false)
virtual int32_t	get_nnz_features_for_vector (int32_t num)
virtual bool	Align_char_features (CStringFeatures< char > *cf, CStringFeatures< char > *Ref, float64_t gapCost)
virtual void	load (CFile *loader)
virtual void	save (CFile *saver)
virtual void *	get_feature_iterator (int32_t vector_index)
virtual bool	get_next_feature (int32_t &index, float64_t &value, void *iterator)
virtual void	free_feature_iterator (void *iterator)
virtual CFeatures *	copy_subset (SGVector< index_t > indices)
Public Member Functions inherited from CDotFeatures
	CDotFeatures (int32_t size=0)
	CDotFeatures (const CDotFeatures &orig)
	CDotFeatures (CFile *loader)
virtual	~CDotFeatures ()
virtual void	dense_dot_range (float64_t *output, int32_t start, int32_t stop, float64_t *alphas, float64_t *vec, int32_t dim, float64_t b)
virtual void	dense_dot_range_subset (int32_t *sub_index, int32_t num, float64_t *output, float64_t *alphas, float64_t *vec, int32_t dim, float64_t b)
float64_t	get_combined_feature_weight ()
void	set_combined_feature_weight (float64_t nw)
SGMatrix< float64_t >	get_computed_dot_feature_matrix ()
SGVector< float64_t >	get_computed_dot_feature_vector (int32_t num)
void	benchmark_add_to_dense_vector (int32_t repeats=5)
void	benchmark_dense_dot_range (int32_t repeats=5)
virtual SGVector< float64_t >	get_mean ()
virtual SGMatrix< float64_t >	get_cov ()
Public Member Functions inherited from CFeatures
	CFeatures (int32_t size=0)
	CFeatures (const CFeatures &orig)
	CFeatures (CFile *loader)
virtual	~CFeatures ()
virtual int32_t	add_preprocessor (CPreprocessor *p)
	set preprocessor
virtual CPreprocessor *	del_preprocessor (int32_t num)
	del current preprocessor
CPreprocessor *	get_preprocessor (int32_t num)
	get current preprocessor
void	set_preprocessed (int32_t num)
bool	is_preprocessed (int32_t num)
int32_t	get_num_preprocessed ()
	get whether specified preprocessor (or all if num=1) was/were already applied
int32_t	get_num_preprocessors () const
void	clean_preprocessors ()
int32_t	get_cache_size ()
void	list_feature_obj ()
bool	check_feature_compatibility (CFeatures *f)
bool	has_property (EFeatureProperty p)
void	set_property (EFeatureProperty p)
void	unset_property (EFeatureProperty p)
virtual void	set_subset (CSubset *subset)
virtual void	remove_subset ()
virtual void	subset_changed_post ()
index_t	subset_idx_conversion (index_t idx) const
bool	has_subset () const
Public Member Functions inherited from CSGObject
	CSGObject ()
	CSGObject (const CSGObject &orig)
virtual	~CSGObject ()
virtual bool	is_generic (EPrimitiveType *generic) const
template<class T >
void	set_generic ()
void	unset_generic ()
virtual void	print_serializable (const char *prefix="")
virtual bool	save_serializable (CSerializableFile *file, const char *prefix="")
virtual bool	load_serializable (CSerializableFile *file, const char *prefix="")
void	set_global_io (SGIO *io)
SGIO *	get_global_io ()
void	set_global_parallel (Parallel *parallel)
Parallel *	get_global_parallel ()
void	set_global_version (Version *version)
Version *	get_global_version ()
SGVector< char * >	get_modelsel_names ()
char *	get_modsel_param_descr (const char *param_name)
index_t	get_modsel_param_index (const char *param_name)

Protected Member Functions
virtual float64_t *	compute_feature_vector (int32_t num, int32_t &len, float64_t *target=NULL)
bool	load_base_data ()

Protected Attributes
FILE *	working_file
char *	working_filename
bool	status
int32_t *	labels
uint8_t	intlen
uint8_t	doublelen
uint32_t	endian
uint32_t	fourcc
uint32_t	preprocd
int64_t	filepos
Protected Attributes inherited from CSimpleFeatures< float64_t >
int32_t	num_vectors
	number of vectors in cache
int32_t	num_features
	number of features in cache
float64_t *	feature_matrix
int32_t	feature_matrix_num_vectors
int32_t	feature_matrix_num_features
CCache< float64_t > *	feature_cache
Protected Attributes inherited from CDotFeatures
float64_t	combined_weight
	feature weighting in combined dot features
Protected Attributes inherited from CFeatures
CSubset *	m_subset

Additional Inherited Members
Static Public Member Functions inherited from CDotFeatures
static void *	dense_dot_range_helper (void *p)
Public Attributes inherited from CSGObject
SGIO *	io
Parallel *	parallel
Version *	version
Parameter *	m_parameters
Parameter *	m_model_selection_parameters

Constructor & Destructor Documentation

CRealFileFeatures

(

)

default constructor

Definition at line 20 of file RealFileFeatures.cpp.

CRealFileFeatures	(	int32_t	size,
		FILE *	file
	)

constructor

Parameters

size	cache size
file	file to load features from

Definition at line 50 of file RealFileFeatures.cpp.

CRealFileFeatures	(	int32_t	size,
		char *	filename
	)

constructor

Parameters

size	cache size
filename	filename to load features from

Definition at line 35 of file RealFileFeatures.cpp.

CRealFileFeatures

(

const CRealFileFeatures &

orig

)

copy constructor

Definition at line 70 of file RealFileFeatures.cpp.

~CRealFileFeatures ( )

virtual

Definition at line 63 of file RealFileFeatures.cpp.

Member Function Documentation

float64_t * compute_feature_vector ( int32_t  num, int32_t &  len, float64_t *  target = NULL  )

protectedvirtual

compute feature vector for sample num len is returned by reference

Parameters

num	num
len	len
target	target

Reimplemented from CSimpleFeatures< float64_t >.

Definition at line 82 of file RealFileFeatures.cpp.

int32_t get_label

(

int32_t

idx

)

get label at given index

Parameters

idx	index to look at

Returns

label at given index

Definition at line 122 of file RealFileFeatures.cpp.

virtual const char* get_name ( ) const

virtual

Returns

object name

Reimplemented from CSimpleFeatures< float64_t >.

Definition at line 64 of file RealFileFeatures.h.

bool load_base_data ( )

protected

load base data

Returns

if loading was successful

Definition at line 130 of file RealFileFeatures.cpp.

float64_t * load_feature_matrix ( )

virtual

load feature matrix

Returns

loaded feature matrix

Definition at line 96 of file RealFileFeatures.cpp.

Member Data Documentation

uint8_t doublelen

protected

doublelen

Definition at line 96 of file RealFileFeatures.h.

uint32_t endian

protected

endian

Definition at line 98 of file RealFileFeatures.h.

int64_t filepos

protected

filepos

Definition at line 104 of file RealFileFeatures.h.

uint32_t fourcc

protected

fourcc

Definition at line 100 of file RealFileFeatures.h.

uint8_t intlen

protected

intlen

Definition at line 94 of file RealFileFeatures.h.

int32_t* labels

protected

labels

Definition at line 91 of file RealFileFeatures.h.

uint32_t preprocd

protected

preprocd

Definition at line 102 of file RealFileFeatures.h.

bool status

protected

status

Definition at line 89 of file RealFileFeatures.h.

FILE* working_file

protected

working file

Definition at line 85 of file RealFileFeatures.h.

char* working_filename

protected

working filename

Definition at line 87 of file RealFileFeatures.h.

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

• RealFileFeatures.h
• RealFileFeatures.cpp