Detailed Description

VarianceKernelNormalizer divides by the ``variance''.

This effectively normalizes the vectors in feature space to variance 1 (see CVarianceKernelNormalizer)

$k'({\bf x},{\bf x'}) = \frac{k({\bf x},{\bf x'})}{\frac{1}{N}\sum_{i=1}^N k({\bf x}_i, {\bf x}_i) - \sum_{i,j=1}^N, k({\bf x}_i,{\bf x'}_j)/N^2}$

Definition at line 27 of file VarianceKernelNormalizer.h.

Inheritance diagram for CVarianceKernelNormalizer:

Public Member Functions
	CVarianceKernelNormalizer ()
virtual	~CVarianceKernelNormalizer ()
virtual bool	init (CKernel *k)
virtual float64_t	normalize (float64_t value, int32_t idx_lhs, int32_t idx_rhs)
virtual float64_t	normalize_lhs (float64_t value, int32_t idx_lhs)
virtual float64_t	normalize_rhs (float64_t value, int32_t idx_rhs)
virtual const char *	get_name () const
Public Member Functions inherited from CKernelNormalizer
	CKernelNormalizer ()
virtual	~CKernelNormalizer ()
virtual void	register_params ()
ENormalizerType	get_normalizer_type ()
void	set_normalizer_type (ENormalizerType type)
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 Attributes
float64_t	meandiff
float64_t	sqrt_meandiff
Protected Attributes inherited from CKernelNormalizer
ENormalizerType	m_type

Additional Inherited Members
Public Attributes inherited from CSGObject
SGIO *	io
Parallel *	parallel
Version *	version
Parameter *	m_parameters
Parameter *	m_model_selection_parameters
Protected Member Functions inherited from CSGObject
virtual void	load_serializable_pre () throw (ShogunException)
virtual void	load_serializable_post () throw (ShogunException)
virtual void	save_serializable_pre () throw (ShogunException)
virtual void	save_serializable_post () throw (ShogunException)