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BallBound< MetricType, VecType > Class Template Reference

Ball bound encloses a set of points at a specific distance (radius) from a specific point (center). More...

Public Types

typedef VecType::elem_type ElemType
 The underlying data type. More...
 
typedef VecType Vec
 A public version of the vector type. More...
 

Public Member Functions

 BallBound ()
 Empty Constructor. More...
 
 BallBound (const size_t dimension)
 Create the ball bound with the specified dimensionality. More...
 
 BallBound (const ElemType radius, const VecType &center)
 Create the ball bound with the specified radius and center. More...
 
 BallBound (const BallBound &other)
 Copy constructor. To prevent memory leaks. More...
 
 BallBound (BallBound &&other)
 Move constructor: take possession of another bound. More...
 
 ~BallBound ()
 Destructor to release allocated memory. More...
 
const VecType & Center () const
 Get the center point of the ball. More...
 
VecType & Center ()
 Modify the center point of the ball. More...
 
void Center (VecType &center) const
 Place the center of BallBound into the given vector. More...
 
bool Contains (const VecType &point) const
 Determines if a point is within this bound. More...
 
ElemType Diameter () const
 Returns the diameter of the ballbound. More...
 
size_t Dim () const
 Get the dimensionality of the ball. More...
 
template<typename OtherVecType >
ElemType MaxDistance (const OtherVecType &point, typename boost::enable_if< IsVector< OtherVecType >> *=0) const
 Computes maximum distance. More...
 
ElemType MaxDistance (const BallBound &other) const
 Computes maximum distance. More...
 
const MetricType & Metric () const
 Returns the distance metric used in this bound. More...
 
MetricType & Metric ()
 Modify the distance metric used in this bound. More...
 
template<typename OtherVecType >
ElemType MinDistance (const OtherVecType &point, typename boost::enable_if< IsVector< OtherVecType >> *=0) const
 Calculates minimum bound-to-point squared distance. More...
 
ElemType MinDistance (const BallBound &other) const
 Calculates minimum bound-to-bound squared distance. More...
 
ElemType MinWidth () const
 Get the minimum width of the bound (this is same as the diameter). More...
 
BallBoundoperator= (const BallBound &other)
 For the same reason as the copy constructor: to prevent memory leaks. More...
 
math::RangeType< ElemTypeoperator[] (const size_t i) const
 Get the range in a certain dimension. More...
 
const BallBoundoperator|= (const BallBound &other)
 Expand the bound to include the given node. More...
 
template<typename MatType >
const BallBoundoperator|= (const MatType &data)
 Expand the bound to include the given point. More...
 
ElemType Radius () const
 Get the radius of the ball. More...
 
ElemTypeRadius ()
 Modify the radius of the ball. More...
 
template<typename OtherVecType >
math::RangeType< ElemTypeRangeDistance (const OtherVecType &other, typename boost::enable_if< IsVector< OtherVecType >> *=0) const
 Calculates minimum and maximum bound-to-point distance. More...
 
math::RangeType< ElemTypeRangeDistance (const BallBound &other) const
 Calculates minimum and maximum bound-to-bound distance. More...
 
template<typename Archive >
void Serialize (Archive &ar, const unsigned int version)
 Serialize the bound. More...
 

Detailed Description

template<typename MetricType = metric::LMetric<2, true>, typename VecType = arma::vec>
class mlpack::bound::BallBound< MetricType, VecType >

Ball bound encloses a set of points at a specific distance (radius) from a specific point (center).

MetricType is the custom metric type that defaults to the Euclidean (L2) distance.

Template Parameters
MetricTypemetric type used in the distance measure.
VecTypeType of vector (arma::vec or arma::sp_vec or similar).

Definition at line 32 of file ballbound.hpp.

Member Typedef Documentation

typedef VecType::elem_type ElemType

The underlying data type.

Definition at line 36 of file ballbound.hpp.

typedef VecType Vec

A public version of the vector type.

Definition at line 38 of file ballbound.hpp.

Constructor & Destructor Documentation

BallBound ( )

Empty Constructor.

BallBound ( const size_t  dimension)

Create the ball bound with the specified dimensionality.

Parameters
dimensionDimensionality of ball bound.
BallBound ( const ElemType  radius,
const VecType &  center 
)

Create the ball bound with the specified radius and center.

Parameters
radiusRadius of ball bound.
centerCenter of ball bound.
BallBound ( const BallBound< MetricType, VecType > &  other)

Copy constructor. To prevent memory leaks.

BallBound ( BallBound< MetricType, VecType > &&  other)

Move constructor: take possession of another bound.

~BallBound ( )

Destructor to release allocated memory.

Member Function Documentation

const VecType& Center ( ) const
inline

Get the center point of the ball.

Definition at line 94 of file ballbound.hpp.

Referenced by ProjVector::Project().

VecType& Center ( )
inline

Modify the center point of the ball.

Definition at line 96 of file ballbound.hpp.

void Center ( VecType &  center) const
inline

Place the center of BallBound into the given vector.

Parameters
centerVector which the centroid will be written to.

Definition at line 120 of file ballbound.hpp.

bool Contains ( const VecType &  point) const

Determines if a point is within this bound.

ElemType Diameter ( ) const
inline

Returns the diameter of the ballbound.

Definition at line 182 of file ballbound.hpp.

size_t Dim ( ) const
inline

Get the dimensionality of the ball.

Definition at line 99 of file ballbound.hpp.

ElemType MaxDistance ( const OtherVecType &  point,
typename boost::enable_if< IsVector< OtherVecType >> *  = 0 
) const

Computes maximum distance.

ElemType MaxDistance ( const BallBound< MetricType, VecType > &  other) const

Computes maximum distance.

const MetricType& Metric ( ) const
inline

Returns the distance metric used in this bound.

Definition at line 185 of file ballbound.hpp.

MetricType& Metric ( )
inline

Modify the distance metric used in this bound.

Definition at line 187 of file ballbound.hpp.

ElemType MinDistance ( const OtherVecType &  point,
typename boost::enable_if< IsVector< OtherVecType >> *  = 0 
) const

Calculates minimum bound-to-point squared distance.

ElemType MinDistance ( const BallBound< MetricType, VecType > &  other) const

Calculates minimum bound-to-bound squared distance.

ElemType MinWidth ( ) const
inline

Get the minimum width of the bound (this is same as the diameter).

For ball bounds, width along all dimensions remain same.

Definition at line 105 of file ballbound.hpp.

BallBound& operator= ( const BallBound< MetricType, VecType > &  other)

For the same reason as the copy constructor: to prevent memory leaks.

math::RangeType<ElemType> operator[] ( const size_t  i) const

Get the range in a certain dimension.

const BallBound& operator|= ( const BallBound< MetricType, VecType > &  other)

Expand the bound to include the given node.

const BallBound& operator|= ( const MatType &  data)

Expand the bound to include the given point.

The centroid is recalculated to be the center of all of the given points.

Template Parameters
MatTypeType of matrix; could be arma::mat, arma::spmat, or a vector.
dataData points to add.
ElemType Radius ( ) const
inline

Get the radius of the ball.

Definition at line 89 of file ballbound.hpp.

Referenced by ProjVector::Project().

ElemType& Radius ( )
inline

Modify the radius of the ball.

Definition at line 91 of file ballbound.hpp.

math::RangeType<ElemType> RangeDistance ( const OtherVecType &  other,
typename boost::enable_if< IsVector< OtherVecType >> *  = 0 
) const

Calculates minimum and maximum bound-to-point distance.

math::RangeType<ElemType> RangeDistance ( const BallBound< MetricType, VecType > &  other) const

Calculates minimum and maximum bound-to-bound distance.

Example: bound1.MinDistanceSq(other) for minimum distance.

void Serialize ( Archive &  ar,
const unsigned int  version 
)

Serialize the bound.


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