Detailed Description

class ManhattanMetric

The Manhattan distance (city block distance, $L_{1}$ norm, rectilinear distance or taxi cab metric ) is a special case of general Minkowski metric and computes the absolute differences between the feature dimensions of two data points.

$\displaystyle d(\bf{x},\bf{x'}) = \sum_{i=1}^{n} |\bf{x_{i}}-\bf{x'_{i}}| \quad \bf{x},\bf{x'} \in R^{n}$

See also:: CMinkowskiMetric; Wikipedia: Manhattan distance

Definition at line 36 of file ManhattanMetric.h.

Inheritance diagram for CManhattanMetric:

[legend]

List of all members.

Public Member Functions
	CManhattanMetric ()
	CManhattanMetric (CSimpleFeatures< float64_t > l, CSimpleFeatures< float64_t > r)
virtual	~CManhattanMetric ()
virtual bool	init (CFeatures l, CFeatures r)
virtual void	cleanup ()
virtual EDistanceType	get_distance_type ()
virtual const char *	get_name () const
Protected Member Functions
virtual float64_t	compute (int32_t idx_a, int32_t idx_b)

Constructor & Destructor Documentation

CManhattanMetric ( )

default constructor

Definition at line 20 of file ManhattanMetric.cpp.

CManhattanMetric	(	CSimpleFeatures< float64_t > *	l,
		CSimpleFeatures< float64_t > *	r
	)

constructor

Parameters:

	l	features of left-hand side
	r	features of right-hand side

Definition at line 25 of file ManhattanMetric.cpp.

~CManhattanMetric ( ) [virtual]

Definition at line 31 of file ManhattanMetric.cpp.

Member Function Documentation

void cleanup ( ) [virtual]

cleanup distance

Implements CSimpleDistance< float64_t >.

Definition at line 43 of file ManhattanMetric.cpp.

float64_t compute	(	int32_t	idx_a,
		int32_t	idx_b
	)			`[protected, virtual]`

compute distance for features a and b idx_{a,b} denote the index of the feature vectors in the corresponding feature object

Implements CDistance.

Definition at line 47 of file ManhattanMetric.cpp.

virtual EDistanceType get_distance_type ( ) [virtual]

get distance type we are

Returns:: distance type MANHATTAN

Implements CSimpleDistance< float64_t >.

Definition at line 65 of file ManhattanMetric.h.

virtual const char* get_name ( void ) const [virtual]

get name of the distance

Returns:: name Manhattan-Metric

Reimplemented from CSimpleDistance< float64_t >.

Definition at line 71 of file ManhattanMetric.h.

bool init	(	CFeatures *	l,
		CFeatures *	r
	)			`[virtual]`

init distance

Parameters:

	l	features of left-hand side
	r	features of right-hand side

Returns:: if init was successful

Reimplemented from CSimpleDistance< float64_t >.

Definition at line 36 of file ManhattanMetric.cpp.

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

CManhattanMetric Class Reference

Detailed Description

Public Member Functions

Protected Member Functions

Constructor & Destructor Documentation

Member Function Documentation