GALILEI Research Project: GVector Class Reference

Concept Vector. More...

#include <gvector.h>

Inheritance diagram for GVector:

Public Member Functions
	GVector (GConcept *metaconcept)
	GVector (GConcept *metaconcept, size_t max)
	GVector (const GVector &vector)
int	Compare (const GVector &vector) const
int	Compare (const GConcept &metaconcept) const
int	Compare (const GConcept *metaconcept) const
R::RCursor< GConceptRef >	GetRefs (void) const
GConcept *	GetMetaConcept (void) const
size_t	GetMetaConceptId (void) const
GConceptRef *	GetRef (const GConceptRef *ref)
GConceptRef *	GetRef (GConcept *concept)
void	InsertRef (GConceptRef *ref)
void	DeleteRef (GConceptRef *ref)
void	DeleteRef (const GConcept *concept)
bool	IsIn (const GConcept *concept) const
size_t	GetTab (const GConceptRef **tab) const
void	Clear (size_t size=0)
size_t	GetNb (void) const
bool	IsDefined (void) const
double	GetMaxWeight (void) const
double	GetMaxAbsWeight (void) const
void	Extract (GVector &vector, const GConceptType *type)
void	ComputeTfIdf (tObjType ObjType)
void	Print (R::RString msg)
void	Intersection (const GVector &vector)
GVector &	operator= (const GVector &vector)
GVector &	operator+= (const GVector &vector)
GVector &	operator-= (const GVector &vector)
GVector &	operator*= (const double nb)
GVector &	operator/= (const double nb)
virtual	~GVector (void)
Static Public Member Functions
static int	SortOrder (const void a, const void b)
Protected Member Functions
void	Copy (const R::RContainer< GConceptRef, false, true > &vector)

Detailed Description

Concept Vector.

The GVector provides a representation for a (sparse) vector of concept references associated with a given meta-concept. Each element of the vector is represented by a GConceptRef class.

In practice, several vectors are used to describe the object (document, profile, community or class) in the tensor space model.

Author:: Pascal Francq

Constructor & Destructor Documentation

GVector ( GConcept * metaconcept )

Constructor of a vector.

Parameters:

metaconcept Meta-concept associated with the vector.

GVector	(	GConcept *	metaconcept,
		size_t	max
	)

Constructor of a vector.

Parameters:

metaconcept	Meta-concept associated with the vector.
max	Initial number of maximal references.

GVector ( const GVector & vector )

Copy constructor of a vector.

Parameters:

vector Vector.

virtual ~GVector ( void ) [virtual]

Destruct the vector.

Member Function Documentation

static int SortOrder	(	const void *	a,
		const void *	b
	)		`[static]`

Static function used to order the concept weights.

Parameters:

a	Pointer to the first object.
b	Pointer to the second object.

Reimplemented from RContainer< GConceptRef, true, true >.

void Copy ( const R::RContainer< GConceptRef, false, true > & vector ) [protected]

Copy method for the vectors.

Parameters:

vector Source vector.

int Compare ( const GVector & vector ) const

Compare two vectors using to their meta-concept.

See also:: R::RContainer

Parameters:

vector Vector.

Returns:: int

int Compare ( const GConcept & metaconcept ) const

Compare a vector and a meta-concept.

See also:: R::RContainer

Parameters:

metaconcept Meta-concept.

Returns:: int

int Compare ( const GConcept * metaconcept ) const

Compare a vector and a meta-concept.

See also:: R::RContainer

Parameters:

metaconcept Meta-concept.

Returns:: int

R::RCursor<GConceptRef> GetRefs ( void ) const

Get a cursor on the concept references.

Returns:: a cursor of GConceptRef.

GConcept* GetMetaConcept ( void ) const

Get the meta-concept associated with the vector.

Returns:: a pointer to a GConcept.

size_t GetMetaConceptId ( void ) const

Returns:: the meta-concept identifier associated with the vector.

GConceptRef* GetRef ( const GConceptRef * ref )

Get a concept reference based on a given one. If it is not found, it is created with a null weight.

Parameters:

ref	Concept reference.

Returns:: a pointer to a GConceptRef.

GConceptRef* GetRef ( GConcept * concept )

Get a pointer to a concept reference based on a given concept. If it is not found, it is created with a null weight.

Parameters:

concept Concept.

Returns:: a pointer to a GConceptRef.

void InsertRef ( GConceptRef * ref )

Insert a concept reference.

Parameters:

ref	Concept reference.

void DeleteRef ( GConceptRef * ref )

Delete a concept reference.

Parameters:

ref	Concept reference.

void DeleteRef ( const GConcept * concept )

Delete an reference to a given concept.

Parameters:

concept Concept.

bool IsIn ( const GConcept * concept ) const

Verify if a given concept is in the vector.

Parameters:

concept Concept.

Returns:: true if the concept is contained.

size_t GetTab ( const GConceptRef ** tab ) const

Fill an array with the concept references.

Parameters:

tab	Array to fill.

Returns:: the number of elements copied.

void Clear ( size_t size = 0 )

Clear the vector and extend it if necessary.

Parameters:

size	Expected size of the vector.

size_t GetNb ( void ) const

Returns:: the number of elements in the container.

Reimplemented from RContainer< GConceptRef, true, true >.

bool IsDefined ( void ) const

Verifies if the vector is defined, i.e. if it has at least one element.

Returns:: true if the vector is defined.

double GetMaxWeight ( void ) const

Compute the maximal weight of the concept references in the vector.

Returns:: double.

double GetMaxAbsWeight ( void ) const

Compute the maximal absolute weight of the concept references in the vector.

Returns:: double.

void Extract	(	GVector &	vector,
		const GConceptType *	type
	)

Extract all concepts related to a given type an put them into a given vector that will be emptied.

Parameters:

vector	Destination vectors.
type	Type selected.

void ComputeTfIdf ( tObjType ObjType )

Compute the Tf*Idf weights for all the elements of the vector.

Parameters:

ObjType Type of the reference (documents, profiles, etc.).

void Print ( R::RString msg )

Print the vector to the standard output.

Parameters:

msg	Header message.

void Intersection ( const GVector & vector )

Build the intersection two vectors. In practice, the weight of the concept references in both vectors are added, the rest is deleted.

Parameters:

vector Vector to search for the intersection.

Warning:: Only vectors associated with the same meta-concept can be compared.

GVector& operator= ( const GVector & vector )

Assignment operator for the vectors.

Parameters:

vector Vector to assign.

GVector& operator+= ( const GVector & vector )

Addition operator for the vectors.

Parameters:

vector Vector to add.

Warning:: Only vectors associated with the same meta-concept can be added.

GVector& operator-= ( const GVector & vector )

Subtraction operator for the vectors.

Parameters:

vector Vector to subtract.

Warning:: Only vectors associated with the same meta-concept can be subtracted.

GVector& operator*= ( const double nb )

Multiplication operator for the vectors.

Parameters:

nb	Number to multiply by.

GVector& operator/= ( const double nb )

Division operator for the vectors.

Parameters:

nb	Number to multiply by.

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation