keel.Algorithms.Rule_Learning.CN2

Class Instance

java.lang.Object

keel.Algorithms.Rule_Learning.CN2.Instance

public class Instance
extends java.lang.Object

Title: Instance

Description: Structure for an instance used in the data-set

Since:

JDK1.4

Version:

1.1

Author:

Written by José Ramón Cano de Amo (University of Jaen) 08/02/2004, Modified by Alberto Fernández (University of Granada) 11/27/2004

Constructor Summary

Constructors

Constructor and Description
Instance(double[] m, int cl, int size) Builder
Instance(int size) Builder without data

Method Summary

Modifier and Type	Method and Description
void	addCovered() Increments the "covered" value
boolean	compare(Instance m) It compares if two examples are the same
Instance	copy() It makes a copy of the example
double	getAttribute(int i) It returns the value of the attribute i-th of the example
int	getClas() It returns the class of the example
int	getCovered() It returns the "covered" value, that is, the number of rules that covers the example
double[]	getMuest() It returns the example itself (array of values)
int	getNattributes() It returns the number of attributes of the example
long	getPosFile() It returns the position of the example in the input data file
void	print() It shows the content of the example
void	setAttribute(int i, double val) It sets a value for an attribute
void	setClass(int i) It assigns the class
void	setCovered(int value) It gives a "covered" value
void	setMuest(double[] ds) It assigns the values for the instance
void	setPosFile(long l) It assigns the position of the example in the input data file

Methods inherited from class java.lang.Object

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

Constructor Detail

Instance

public Instance(double[] m,
                int cl,
                int size)

Builder

Parameters:

m - an array of attributes

cl - the class of the instance

size - the size of the instance (number of attributes)

Instance

public Instance(int size)

Builder without data

Parameters:

size - the size of the instance (number of attributes)

Method Detail

getClas

public int getClas()

It returns the class of the example

Returns:

the class

getMuest

public double[] getMuest()

It returns the example itself (array of values)

Returns:

the complete example

setClass

public void setClass(int i)

It assigns the class

Parameters:

i - class id

setMuest

public void setMuest(double[] ds)

It assigns the values for the instance

Parameters:

ds - an array of values for the instance

getPosFile

public long getPosFile()

It returns the position of the example in the input data file

Returns:

the file position

setPosFile

public void setPosFile(long l)

It assigns the position of the example in the input data file

Parameters:

l - file position

getAttribute

public double getAttribute(int i)

It returns the value of the attribute i-th of the example

Parameters:

i - attribute position

Returns:

attribute vaule

getNattributes

public int getNattributes()

It returns the number of attributes of the example

Returns:

number of attributes

setAttribute

public void setAttribute(int i,
                         double val)

It sets a value for an attribute

Parameters:

i - attribute position

val - new value

print

public void print()

It shows the content of the example

copy

public Instance copy()

It makes a copy of the example

Returns:

a new cloned example

compare

public boolean compare(Instance m)

It compares if two examples are the same

Parameters:

m - Example to compare

Returns:

True if they are the same. False in other case

getCovered

public int getCovered()

It returns the "covered" value, that is, the number of rules that covers the example

Returns:

the number of rules that covers the example

setCovered

public void setCovered(int value)

It gives a "covered" value

Parameters:

value - new value

addCovered

public void addCovered()

Increments the "covered" value