keel.Algorithms.Decision_Trees.ID3

Class Attribute

java.lang.Object

keel.Algorithms.Decision_Trees.ID3.Attribute

public class Attribute
extends java.lang.Object

Class to implement an attribute

Field Summary

Fields

Modifier and Type	Field and Description
static int	CONTINUOUS Continuous attribute.
static int	DISCRET Discret attribute.

Constructor Summary

Constructors

Constructor and Description
Attribute(java.lang.String attributeName, int attributeIndex) Constructor for continuous attributes.
Attribute(java.lang.String attributeName, java.util.Vector attributeValues, int attributeIndex) Constructor for discret attributes.

Method Summary

Modifier and Type	Method and Description
void	activate() Sets the attribute as used.
int	getIndex() Returns the index of the attribute.
float	getMaxRange() Gets the bigger value of a continuous attribute.
float	getMinRange() Returns the minor value of a continuous attribute.
boolean	isActive() Returns true if this attribute used in output or input clause.
boolean	isContinuous() Returns if the attribute is continuous or not.
boolean	isDiscret() Returns if the attribute is discret or not.
java.lang.String	name() Returns the name of the attribute.
int	numValues() Function to get the number of values of a discret attribute.
java.lang.String	value(int valIndex) Returns the value with the given index.
int	valueIndex(java.lang.String value) Function to get the index of a value in the list of values.

Methods inherited from class java.lang.Object

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

Field Detail

CONTINUOUS

public static final int CONTINUOUS

Continuous attribute.

See Also:

Constant Field Values

DISCRET

public static final int DISCRET

Discret attribute.

See Also:

Constant Field Values

Constructor Detail

Attribute

public Attribute(java.lang.String attributeName,
                 int attributeIndex)

Constructor for continuous attributes.

Parameters:

attributeName - attribute name given to be constructed.

attributeIndex - attribute index given to be constructed.

Attribute

public Attribute(java.lang.String attributeName,
                 java.util.Vector attributeValues,
                 int attributeIndex)

Constructor for discret attributes.

Parameters:

attributeName - The name of the attribute.

attributeValues - The values of the attributes.

attributeIndex - The index of the attribute.

Method Detail

valueIndex

public final int valueIndex(java.lang.String value)

Function to get the index of a value in the list of values.

Parameters:

value - The value.

Returns:

The index of the value.

isDiscret

public final boolean isDiscret()

Returns if the attribute is discret or not.

Returns:

True if the attribute is discret, false otherwise.

isContinuous

public final boolean isContinuous()

Returns if the attribute is continuous or not.

Returns:

True if the attribute is continuous, false otherwise.

name

public final java.lang.String name()

Returns the name of the attribute.

Returns:

name of the attribute.

numValues

public final int numValues()

Function to get the number of values of a discret attribute.

Returns:

The number of values of the attribute.

value

public final java.lang.String value(int valIndex)

Returns the value with the given index.

Parameters:

valIndex - The index of the value.

Returns:

value with the given index in the attribut

getMinRange

public final float getMinRange()

Returns the minor value of a continuous attribute.

Returns:

minor value of a continuous attribute.

getMaxRange

public final float getMaxRange()

Gets the bigger value of a continuous attribute.

Returns:

the bigger value of a continuous attribute.

activate

public void activate()

Sets the attribute as used.

isActive

public boolean isActive()

Returns true if this attribute used in output or input clause.

Returns:

true if this attribute used in output or input clause.

getIndex

public int getIndex()

Returns the index of the attribute.

Returns:

the index of the attribute.