keel.Algorithms.RST_Learning

Class Util

java.lang.Object

keel.Algorithms.RST_Learning.Util

public class Util
extends java.lang.Object

File: Util.java Auxiliar class with useful function for working with instance based methods

Since:

JDK1.5

Version:

1.0

Author:

Written by Joaquín Derrac (University of Granada) 20/04/2010

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Modifier and Type	Method and Description
protected static double	euclideanDistance(double[] instance1, double[] instance2) Calculates the Euclidean distance between two instances
protected static double	euclideanDistanceNS(double[] instance1, double[] instance2) Calculates the unsquared Euclidean distance between two instances
static void	print(java.lang.String text) Prints a text in the standard output
static void	printInstance(double[] instance) Prints on the standard output the contents of the instance
static void	printMatrix(double[][] data) Prints on the standard output a string with the contents of a data matrix
static boolean	same(double[] a, double[] b) Checks if two instances are the same

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

euclideanDistance

protected static double euclideanDistance(double[] instance1,
                                          double[] instance2)

Calculates the Euclidean distance between two instances

Parameters:

instance1 - First instance

instance2 - Second instance

Returns:

The Euclidean distance

euclideanDistanceNS

protected static double euclideanDistanceNS(double[] instance1,
                                            double[] instance2)

Calculates the unsquared Euclidean distance between two instances

Parameters:

instance1 - First instance

instance2 - Second instance

Returns:

The unsquared Euclidean distance

same

public static boolean same(double[] a,
                           double[] b)

Checks if two instances are the same

Parameters:

a - First instance

b - Second instance

Returns:

True if both instances are equal.

printInstance

public static void printInstance(double[] instance)

Prints on the standard output the contents of the instance

Parameters:

instance - Instance to print.

printMatrix

public static void printMatrix(double[][] data)

Prints on the standard output a string with the contents of a data matrix

Parameters:

data - Data matrix to print.

print

public static void print(java.lang.String text)

Prints a text in the standard output

Parameters:

text - Text to print