CCombinedDotFeatures Class Reference


Detailed Description

Features that allow stacking of a number of DotFeatures.

They transparently provide all the operations of DotFeatures, i.e.

\[r = {\bf x} \cdot {\bf x'}\]

\[r = {\bf x} \cdot {\bf z}\]

\[{\bf z'} = \alpha {\bf x} + {\bf z}\]

Definition at line 43 of file CombinedDotFeatures.h.

Inheritance diagram for CCombinedDotFeatures:
Inheritance graph
[legend]

List of all members.

Public Member Functions

 CCombinedDotFeatures ()
 CCombinedDotFeatures (const CCombinedDotFeatures &orig)
virtual ~CCombinedDotFeatures ()
virtual int32_t get_num_vectors ()
virtual int32_t get_dim_feature_space ()
virtual float64_t dot (int32_t vec_idx1, 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 EFeatureType get_feature_type ()
virtual EFeatureClass get_feature_class ()
virtual int32_t get_size ()
virtual CFeaturesduplicate () const
void list_feature_objs ()
CDotFeaturesget_first_feature_obj ()
CDotFeaturesget_first_feature_obj (CListElement< CDotFeatures * > *&current)
CDotFeaturesget_next_feature_obj ()
CDotFeaturesget_next_feature_obj (CListElement< CDotFeatures * > *&current)
CDotFeaturesget_last_feature_obj ()
bool insert_feature_obj (CDotFeatures *obj)
bool append_feature_obj (CDotFeatures *obj)
bool delete_feature_obj ()
int32_t get_num_feature_obj ()
virtual void get_subfeature_weights (float64_t **weights, int32_t *num_weights)
virtual void set_subfeature_weights (float64_t *weights, int32_t num_weights)
virtual const char * get_name () const

Protected Member Functions

void update_dim_feature_space_and_num_vec ()

Protected Attributes

CList< CDotFeatures * > * feature_list
int32_t num_vectors
 total number of vectors
int32_t num_dimensions
 total number of dimensions

Constructor & Destructor Documentation

constructor

Definition at line 17 of file CombinedDotFeatures.cpp.

copy constructor

Definition at line 23 of file CombinedDotFeatures.cpp.

~CCombinedDotFeatures (  )  [virtual]

destructor

Definition at line 34 of file CombinedDotFeatures.cpp.


Member Function Documentation

void add_to_dense_vec ( float64_t  alpha,
int32_t  vec_idx1,
float64_t vec2,
int32_t  vec2_len,
bool  abs_val = false 
) [virtual]

add vector 1 multiplied with alpha to dense vector2

Parameters:
alpha scalar alpha
vec_idx1 index of first vector
vec2 pointer to real valued vector
vec2_len length of real valued vector
abs_val if true add the absolute value

Implements CDotFeatures.

Definition at line 119 of file CombinedDotFeatures.cpp.

bool append_feature_obj ( CDotFeatures obj  ) 

append feature object

Parameters:
obj feature object to append
Returns:
if appending was successful

Definition at line 210 of file CombinedDotFeatures.h.

bool delete_feature_obj (  ) 

delete feature object

Returns:
if deleting was successful

Definition at line 223 of file CombinedDotFeatures.h.

float64_t dense_dot ( int32_t  vec_idx1,
const float64_t vec2,
int32_t  vec2_len 
) [virtual]

compute dot product between vector1 and a dense vector

Parameters:
vec_idx1 index of first vector
vec2 pointer to real valued vector
vec2_len length of real valued vector

Implements CDotFeatures.

Definition at line 100 of file CombinedDotFeatures.cpp.

float64_t dot ( int32_t  vec_idx1,
int32_t  vec_idx2 
) [virtual]

compute dot product between vector1 and vector2, appointed by their indices

Parameters:
vec_idx1 index of first vector
vec_idx2 index of second vector

Implements CDotFeatures.

Definition at line 84 of file CombinedDotFeatures.cpp.

CFeatures * duplicate (  )  const [virtual]

duplicate feature object

Returns:
feature object

Implements CFeatures.

Definition at line 29 of file CombinedDotFeatures.cpp.

virtual int32_t get_dim_feature_space (  )  [virtual]

obtain the dimensionality of the feature space

Returns:
dimensionality

Implements CDotFeatures.

Definition at line 64 of file CombinedDotFeatures.h.

virtual EFeatureClass get_feature_class (  )  [virtual]

get feature class

Returns:
feature class

Implements CFeatures.

Definition at line 115 of file CombinedDotFeatures.h.

virtual EFeatureType get_feature_type (  )  [virtual]

get feature type

Returns:
templated feature type

Implements CFeatures.

Definition at line 106 of file CombinedDotFeatures.h.

CDotFeatures* get_first_feature_obj ( CListElement< CDotFeatures * > *&  current  ) 

get first feature object

Parameters:
current list of features
Returns:
first feature object

Definition at line 150 of file CombinedDotFeatures.h.

CDotFeatures* get_first_feature_obj (  ) 

get first feature object

Returns:
first feature object

Definition at line 138 of file CombinedDotFeatures.h.

CDotFeatures* get_last_feature_obj (  ) 

get last feature object

Returns:
last feature object

Definition at line 184 of file CombinedDotFeatures.h.

virtual const char* get_name (  )  const [virtual]
Returns:
object name

Implements CSGObject.

Definition at line 261 of file CombinedDotFeatures.h.

CDotFeatures* get_next_feature_obj ( CListElement< CDotFeatures * > *&  current  ) 

get next feature object

Parameters:
current list of features
Returns:
next feature object

Definition at line 173 of file CombinedDotFeatures.h.

CDotFeatures* get_next_feature_obj (  ) 

get next feature object

Returns:
next feature object

Definition at line 161 of file CombinedDotFeatures.h.

int32_t get_nnz_features_for_vector ( int32_t  num  )  [virtual]

get number of non-zero features in vector

Parameters:
num which vector
Returns:
number of non-zero features in vector

Implements CDotFeatures.

Definition at line 135 of file CombinedDotFeatures.cpp.

int32_t get_num_feature_obj (  ) 

get number of feature objects

Returns:
number of feature objects

Definition at line 240 of file CombinedDotFeatures.h.

virtual int32_t get_num_vectors (  )  [virtual]

get number of examples/vectors

abstract base method

Returns:
number of examples/vectors

Implements CFeatures.

Definition at line 55 of file CombinedDotFeatures.h.

virtual int32_t get_size (  )  [virtual]

get memory footprint of one feature

abstract base method

Returns:
memory footprint of one feature

Implements CFeatures.

Definition at line 120 of file CombinedDotFeatures.h.

void get_subfeature_weights ( float64_t **  weights,
int32_t *  num_weights 
) [virtual]

get subfeature weights

Parameters:
weights subfeature weights
num_weights where number of weights is stored

Definition at line 150 of file CombinedDotFeatures.cpp.

bool insert_feature_obj ( CDotFeatures obj  ) 

insert feature object

Parameters:
obj feature object to insert
Returns:
if inserting was successful

Definition at line 196 of file CombinedDotFeatures.h.

void list_feature_objs (  ) 

list feature objects

Definition at line 39 of file CombinedDotFeatures.cpp.

void set_subfeature_weights ( float64_t weights,
int32_t  num_weights 
) [virtual]

set subfeature weights

Parameters:
weights new subfeature weights
num_weights number of subfeature weights

Definition at line 168 of file CombinedDotFeatures.cpp.

void update_dim_feature_space_and_num_vec (  )  [protected]

update total number of dimensions and vectors

Definition at line 57 of file CombinedDotFeatures.cpp.


Member Data Documentation

feature list

Definition at line 269 of file CombinedDotFeatures.h.

int32_t num_dimensions [protected]

total number of dimensions

Definition at line 274 of file CombinedDotFeatures.h.

int32_t num_vectors [protected]

total number of vectors

Definition at line 272 of file CombinedDotFeatures.h.


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

SHOGUN Machine Learning Toolbox - Documentation