keel.Algorithms.Rule_Learning.Ripper

Class SimpleRule

java.lang.Object

keel.Algorithms.Rule_Learning.Ripper.SimpleRule

public class SimpleRule
extends java.lang.Object

Represent one single rule of the form: exemple[a]==v, exemple[a]>=v or exemple[a]<=v. a is one of the exemple's attributes and v is a legal value for a.

Since:

JDK1.2

Version:

1.1

Author:

Written by Alberto Fernández (University of Granada) 01/07/2008, Modified by Xavi Solé (La Salle, Ramón Llull University - Barcelona) 03/12/2008

Field Summary

Fields

Modifier and Type	Field and Description
static int	EQUAL Flag for equal operator
static int	GREATER Flag for greater operator
static int	LOWER Flag for lower operator

Constructor Summary

Constructors

Constructor and Description
SimpleRule() Default constructor (the attribute's id and value are undefined)
SimpleRule(int attribute, double value, int operator) Constructs a SimpleRule with a given attribute and value

Method Summary

Modifier and Type	Method and Description
int	getAttribute() Returns the attribute's id
SimpleRule	getCopy() It returns a copy of this simple rule
int	getOperator() Returns the operator of the rule
double	getValue() Returns the value of the attribute
boolean	isContinous() Returns true if the attribute is continous
boolean	isDiscret() Returns true if the attribute is discret
boolean	isEqual(SimpleRule sr) Return wether this simple rule is equal to another given simple rule
void	set(int attribute, double value, int operator) Sets the attribute's id and the attribute's value
void	setAttribute(int attribute) Sets the attribute's id and the attribute's value
void	setOperator(int operator) Sets the rule operator
void	setValue(double value) Sets the attribute's value
java.lang.String	toString() Returns a string representation of this SimpleRule

Methods inherited from class java.lang.Object

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

Field Detail

GREATER

public static int GREATER

Flag for greater operator

LOWER

public static int LOWER

Flag for lower operator

EQUAL

public static int EQUAL

Flag for equal operator

Constructor Detail

SimpleRule

public SimpleRule()

Default constructor (the attribute's id and value are undefined)

SimpleRule

public SimpleRule(int attribute,
                  double value,
                  int operator)

Constructs a SimpleRule with a given attribute and value

Parameters:

attribute - int attribute's id (position of the attribute)

value - double attribute's value

operator - int rule operator: >, = ó <=

Method Detail

getAttribute

public int getAttribute()

Returns the attribute's id

Returns:

attribute's id (position of the attribute)

getValue

public double getValue()

Returns the value of the attribute

Returns:

attribute's value

getOperator

public int getOperator()

Returns the operator of the rule

Returns:

rule operator

isDiscret

public boolean isDiscret()

Returns true if the attribute is discret

Returns:

true if the attribute is discret

isContinous

public boolean isContinous()

Returns true if the attribute is continous

Returns:

true if the attribute is continous

set

public void set(int attribute,
                double value,
                int operator)

Sets the attribute's id and the attribute's value

Parameters:

attribute - int attribute's id (position of the attribute)

value - attribute's value

operator - int rule operator: >, = ó <=

setAttribute

public void setAttribute(int attribute)

Sets the attribute's id and the attribute's value

Parameters:

attribute - int attribute's id (position of the attribute)

setValue

public void setValue(double value)

Sets the attribute's value

Parameters:

value - attribute's value

setOperator

public void setOperator(int operator)

Sets the rule operator

Parameters:

operator - int rule operator: >, = ó <=

isEqual

public boolean isEqual(SimpleRule sr)

Return wether this simple rule is equal to another given simple rule

Parameters:

sr - SimpleRule the given simple rule

Returns:

true if this simple rule is equal to the given simple rule

getCopy

public SimpleRule getCopy()

It returns a copy of this simple rule

Returns:

a copy of this simple rule

toString

public java.lang.String toString()

Returns a string representation of this SimpleRule

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this SimpleRule.