CPruneVarSubMean Class Reference

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Detailed Description

Preprocessor PruneVarSubMean will substract the mean and remove features that have zero variance.

It will optionally normalize standard deviation of features to 1 (by dividing by standard deviation of the feature)

Definition at line 30 of file PruneVarSubMean.h.

Inheritance diagram for CPruneVarSubMean:

List of all members.

Public Member Functions
	CPruneVarSubMean (bool divide=true)
virtual	~CPruneVarSubMean ()
virtual bool	init (CFeatures *f)
	initialize preprocessor from features
virtual void	cleanup ()
	cleanup
virtual float64_t *	apply_to_feature_matrix (CFeatures *f)
virtual float64_t *	apply_to_feature_vector (float64_t *f, int32_t &len)
virtual const char *	get_name ()
Protected Attributes
int32_t *	idx
float64_t *	mean
float64_t *	std
int32_t	num_idx
bool	divide_by_std
bool	initialized
	true when already initialized

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Constructor & Destructor Documentation

CPruneVarSubMean

(

bool

divide = true

)

constructor

Parameters:

divide

if division shall be made

Definition at line 21 of file PruneVarSubMean.cpp.

~CPruneVarSubMean

(

)

[virtual]

Definition at line 27 of file PruneVarSubMean.cpp.

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Member Function Documentation

float64_t * apply_to_feature_matrix

(

CFeatures *

f

)

[virtual]

apply preproc on feature matrix result in feature matrix return pointer to feature_matrix, i.e. f->get_feature_matrix();

Implements CSimplePreProc< float64_t >.

Definition at line 142 of file PruneVarSubMean.cpp.

float64_t * apply_to_feature_vector	(	float64_t *	f,
		int32_t &	len
	)			[virtual]

apply preproc on single feature vector result in feature matrix

Implements CSimplePreProc< float64_t >.

Definition at line 178 of file PruneVarSubMean.cpp.

void cleanup

(

)

[virtual]

cleanup

clean up allocated memory

Implements CPreProc.

Definition at line 129 of file PruneVarSubMean.cpp.

virtual const char* get_name

(

void

)

[virtual]

Returns:

object name

Implements CSGObject.

Definition at line 56 of file PruneVarSubMean.h.

bool init

(

CFeatures *

f

)

[virtual]

initialize preprocessor from features

Implements CPreProc.

Definition at line 33 of file PruneVarSubMean.cpp.

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Member Data Documentation

bool divide_by_std [protected]

divide by std

Definition at line 68 of file PruneVarSubMean.h.

int32_t* idx [protected]

idx

Definition at line 60 of file PruneVarSubMean.h.

bool initialized [protected]

true when already initialized

Definition at line 71 of file PruneVarSubMean.h.

float64_t* mean [protected]

mean

Definition at line 62 of file PruneVarSubMean.h.

int32_t num_idx [protected]

num idx

Definition at line 66 of file PruneVarSubMean.h.

float64_t* std [protected]

std

Definition at line 64 of file PruneVarSubMean.h.

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

• PruneVarSubMean.h
• PruneVarSubMean.cpp