keel.Algorithms.Semi_Supervised_Learning.utilities

Class Distance

java.lang.Object

keel.Algorithms.Semi_Supervised_Learning.utilities.Distance

All Implemented Interfaces:

java.util.Comparator<Prototype>

public class Distance
extends java.lang.Object
implements java.util.Comparator<Prototype>

Distance measurer between prototypes.

Author:

diegoj

Field Summary

Fields

Modifier and Type	Field and Description
protected static Prototype	basePrototype Base prototype of the sortings.
protected static int	numberOfInputs Number of inputs of the prototypes (used to optimize calculations).

Constructor Summary

Constructors

Constructor and Description
Distance(Prototype p) Construct a new Distance object.

Method Summary

Modifier and Type	Method and Description
static double	absoluteDistance(Prototype one, Prototype two) Compute the Absolute Distance between two prototypes.
int	compare(Prototype one, Prototype two) Overloading of the compare function.
static double	d(Prototype one, Prototype two) Compute the Euclidean Distance between two prototypes.
static double	distance(Prototype one, Prototype two) Compute the Euclidean Distance between two prototypes.
static double	dSquared(Prototype one, Prototype two) Compute the Squared euclidean distance between two prototypes.
static double	euclideanDistance(Prototype one, Prototype two) Compute the Euclidean Distance between two prototypes.
static void	setNumberOfInputs(int _n) Assigns the number of inputs of the prototypes.
void	setPrototypeToCompare(Prototype p) Assigns base prototype.
static double	squaredEuclideanDistance(Prototype one, Prototype two) Compute the squared euclidean distance between two prototypes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

basePrototype

protected static Prototype basePrototype

Base prototype of the sortings.

numberOfInputs

protected static int numberOfInputs

Number of inputs of the prototypes (used to optimize calculations).

Constructor Detail

Distance

public Distance(Prototype p)

Construct a new Distance object.

Parameters:

p - Base prototype.

Method Detail

setNumberOfInputs

public static void setNumberOfInputs(int _n)

Assigns the number of inputs of the prototypes.

Parameters:

_n - Number of inputs of the prototypes.

setPrototypeToCompare

public void setPrototypeToCompare(Prototype p)

Assigns base prototype. That is, prototype to compare in sortings and other operations.

Parameters:

p - New base prototype.

squaredEuclideanDistance

public static double squaredEuclideanDistance(Prototype one,
                                              Prototype two)

Compute the squared euclidean distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

squared euclidean distance between one and two.

dSquared

public static double dSquared(Prototype one,
                              Prototype two)

Compute the Squared euclidean distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

squared euclidean distance between one and two.

d

public static double d(Prototype one,
                       Prototype two)

Compute the Euclidean Distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

Euclidean Distance between one and two.

euclideanDistance

public static double euclideanDistance(Prototype one,
                                       Prototype two)

Compute the Euclidean Distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

Euclidean Distance between one and two.

distance

public static double distance(Prototype one,
                              Prototype two)

Compute the Euclidean Distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

Euclidean Distance between one and two.

absoluteDistance

public static double absoluteDistance(Prototype one,
                                      Prototype two)

Compute the Absolute Distance between two prototypes.

Parameters:

one - One prototype.

two - Other prototype.

Returns:

Absolute Distance between one and two.

compare

public int compare(Prototype one,
                   Prototype two)

Overloading of the compare function.

Specified by:

compare in interface java.util.Comparator<Prototype>

Parameters:

one - One prototype.

two - Other prototype.

Returns:

if d(base,one)>d(base,two) 1; if d(base,one)==d(base,two) 0; else -1.