Detailed Description

InverseMultiQuadricKernel.

$K(x,x') = 1/(\sqrt{\| x - x' \|^2 +c^2})$

Definition at line 32 of file InverseMultiQuadricKernel.h.

Inheritance diagram for CInverseMultiQuadricKernel:

Public Member Functions
	CInverseMultiQuadricKernel ()
	CInverseMultiQuadricKernel (int32_t cache, float64_t coef, CDistance *dist)
	CInverseMultiQuadricKernel (CFeatures l, CFeatures r, float64_t coef, CDistance *dist)
virtual bool	init (CFeatures l, CFeatures r)
virtual EKernelType	get_kernel_type ()
virtual EFeatureType	get_feature_type ()
virtual EFeatureClass	get_feature_class ()
virtual const char *	get_name () const
float64_t	get_coef ()
void	set_coef (float64_t value)
virtual	~CInverseMultiQuadricKernel ()
Public Member Functions inherited from CKernel
	CKernel ()
	CKernel (int32_t size)
	CKernel (CFeatures l, CFeatures r, int32_t size)
virtual	~CKernel ()
float64_t	kernel (int32_t idx_a, int32_t idx_b)
SGMatrix< float64_t >	get_kernel_matrix ()
virtual SGVector< float64_t >	get_kernel_col (int32_t j)
virtual SGVector< float64_t >	get_kernel_row (int32_t i)
template<class T >
SGMatrix< T >	get_kernel_matrix ()
virtual bool	set_normalizer (CKernelNormalizer *normalizer)
virtual CKernelNormalizer *	get_normalizer ()
virtual bool	init_normalizer ()
virtual void	cleanup ()
void	load (CFile *loader)
void	save (CFile *writer)
CFeatures *	get_lhs ()
CFeatures *	get_rhs ()
virtual int32_t	get_num_vec_lhs ()
virtual int32_t	get_num_vec_rhs ()
virtual bool	has_features ()
bool	get_lhs_equals_rhs ()
virtual void	remove_lhs_and_rhs ()
virtual void	remove_lhs ()
virtual void	remove_rhs ()
	takes all necessary steps if the rhs is removed from kernel
void	set_cache_size (int32_t size)
int32_t	get_cache_size ()
void	list_kernel ()
bool	has_property (EKernelProperty p)
virtual void	clear_normal ()
virtual void	add_to_normal (int32_t vector_idx, float64_t weight)
EOptimizationType	get_optimization_type ()
virtual void	set_optimization_type (EOptimizationType t)
bool	get_is_initialized ()
virtual bool	init_optimization (int32_t count, int32_t IDX, float64_t weights)
virtual bool	delete_optimization ()
bool	init_optimization_svm (CSVM *svm)
virtual float64_t	compute_optimized (int32_t vector_idx)
virtual void	compute_batch (int32_t num_vec, int32_t vec_idx, float64_t target, int32_t num_suppvec, int32_t IDX, float64_t alphas, float64_t factor=1.0)
float64_t	get_combined_kernel_weight ()
void	set_combined_kernel_weight (float64_t nw)
virtual int32_t	get_num_subkernels ()
virtual void	compute_by_subkernel (int32_t vector_idx, float64_t *subkernel_contrib)
virtual const float64_t *	get_subkernel_weights (int32_t &num_weights)
virtual void	set_subkernel_weights (SGVector< float64_t > weights)
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 (int32_t idx_a, int32_t idx_b)
virtual void	load_serializable_post () throw (ShogunException)
Protected Member Functions inherited from CKernel
void	set_property (EKernelProperty p)
void	unset_property (EKernelProperty p)
void	set_is_initialized (bool p_init)
int32_t	compute_row_start (int64_t offs, int32_t n, bool symmetric)
virtual void	save_serializable_pre () throw (ShogunException)
virtual void	save_serializable_post () throw (ShogunException)
virtual void	register_params ()
Protected Member Functions inherited from CSGObject
virtual void	load_serializable_pre () throw (ShogunException)

Protected Attributes
CDistance *	distance
float64_t	coef
Protected Attributes inherited from CKernel
int32_t	cache_size
	cache_size in MB
KERNELCACHE_ELEM *	kernel_matrix
CFeatures *	lhs
	feature vectors to occur on left hand side
CFeatures *	rhs
	feature vectors to occur on right hand side
bool	lhs_equals_rhs
	lhs
int32_t	num_lhs
	number of feature vectors on left hand side
int32_t	num_rhs
	number of feature vectors on right hand side
float64_t	combined_kernel_weight
bool	optimization_initialized
EOptimizationType	opt_type
uint64_t	properties
CKernelNormalizer *	normalizer

Additional Inherited Members
Public Attributes inherited from CSGObject
SGIO *	io
Parallel *	parallel
Version *	version
Parameter *	m_parameters
Parameter *	m_model_selection_parameters
Static Protected Member Functions inherited from CKernel
template<class T >
static void *	get_kernel_matrix_helper (void *p)

Constructor & Destructor Documentation

CInverseMultiQuadricKernel ( )

default constructor

Definition at line 17 of file InverseMultiQuadricKernel.cpp.

CInverseMultiQuadricKernel	(	int32_t	cache,
		float64_t	coef,
		CDistance *	dist
	)

constructor

Parameters

cache	size of cache
coef	kernel parameter coef
dist	distance to be used

Definition at line 22 of file InverseMultiQuadricKernel.cpp.

CInverseMultiQuadricKernel	(	CFeatures *	l,
		CFeatures *	r,
		float64_t	coef,
		CDistance *	dist
	)

constructor

Parameters

l	features left-side
r	features right-side
coef	kernel parameter coef
dist	distance to be used

Definition at line 29 of file InverseMultiQuadricKernel.cpp.

~CInverseMultiQuadricKernel ( )

virtual

Definition at line 37 of file InverseMultiQuadricKernel.cpp.

Member Function Documentation

float64_t compute	(	int32_t	idx_a,
		int32_t	idx_b
	)

protectedvirtual

compute kernel for specific feature vectors corresponding to [idx_a] of left-side and [idx_b] of right-side

Parameters

idx_a	left-side index
idx_b	right-side index

Returns: kernel value

Implements CKernel.

Definition at line 61 of file InverseMultiQuadricKernel.cpp.

float64_t get_coef ( )

getter for coef parameter

Returns: kernel parameter coefficient

Definition at line 83 of file InverseMultiQuadricKernel.h.

virtual EFeatureClass get_feature_class ( )

virtual

Returns: class of features

Implements CKernel.

Definition at line 73 of file InverseMultiQuadricKernel.h.

virtual EFeatureType get_feature_type ( )

virtual

Returns: type of features

Implements CKernel.

Definition at line 68 of file InverseMultiQuadricKernel.h.

virtual EKernelType get_kernel_type ( )

virtual

Returns: kernel type

Implements CKernel.

Definition at line 63 of file InverseMultiQuadricKernel.h.

virtual const char* get_name ( ) const

virtual

Returns: name of kernel

Implements CSGObject.

Definition at line 78 of file InverseMultiQuadricKernel.h.

bool init	(	CFeatures *	l,
		CFeatures *	r
	)

virtual

initialize kernel with features

Parameters

l	features left-side
r	features right-side

Returns: true if successful

Reimplemented from CKernel.

Definition at line 43 of file InverseMultiQuadricKernel.cpp.

void load_serializable_post ( ) throw (ShogunException)

protectedvirtual

Can (optionally) be overridden to post-initialize some member variables which are not PARAMETER::ADD'ed. Make sure that at first the overridden method BASE_CLASS::LOAD_SERIALIZABLE_POST is called.

Exceptions

ShogunException Will be thrown if an error occurres.

Reimplemented from CKernel.

Definition at line 50 of file InverseMultiQuadricKernel.cpp.

void set_coef ( float64_t value )

setter for coef parameter

Parameters

value kernel parameter coefficient

Definition at line 88 of file InverseMultiQuadricKernel.h.