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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:
Inheritance graph
[legend]

Public Member Functions

 CRealFileFeatures ()
 CRealFileFeatures (int32_t size, FILE *file)
 CRealFileFeatures (int32_t size, char *filename)
 CRealFileFeatures (const CRealFileFeatures &orig)
virtual ~CRealFileFeatures ()
virtual float64_tload_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 CFeaturesduplicate () const
virtual ~CSimpleFeatures ()
void free_feature_matrix ()
void free_features ()
float64_tget_feature_vector (int32_t num, int32_t &len, bool &dofree)
SGVector< float64_tget_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_tget_feature_matrix ()
float64_tget_feature_matrix (int32_t &num_feat, int32_t &num_vec)
SGMatrix< float64_tsteal_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_tget_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 CFeaturescopy_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_tget_computed_dot_feature_matrix ()
SGVector< float64_tget_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_tget_mean ()
virtual SGMatrix< float64_tget_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 CPreprocessordel_preprocessor (int32_t num)
 del current preprocessor
CPreprocessorget_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)
SGIOget_global_io ()
void set_global_parallel (Parallel *parallel)
Parallelget_global_parallel ()
void set_global_version (Version *version)
Versionget_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_tcompute_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_tfeature_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
CSubsetm_subset

Additional Inherited Members

- Static Public Member Functions inherited from CDotFeatures
static void * dense_dot_range_helper (void *p)
- Public Attributes inherited from CSGObject
SGIOio
Parallelparallel
Versionversion
Parameterm_parameters
Parameterm_model_selection_parameters

Constructor & Destructor Documentation

default constructor

Definition at line 20 of file RealFileFeatures.cpp.

CRealFileFeatures ( int32_t  size,
FILE *  file 
)

constructor

Parameters
sizecache size
filefile to load features from

Definition at line 50 of file RealFileFeatures.cpp.

CRealFileFeatures ( int32_t  size,
char *  filename 
)

constructor

Parameters
sizecache size
filenamefilename to load features from

Definition at line 35 of file RealFileFeatures.cpp.

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
numnum
lenlen
targettarget

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
idxindex 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.


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

SHOGUN Machine Learning Toolbox - Documentation