cosc575.p1
Class DiscreteAttribute

java.lang.Object
  cosc575.p1.Attribute
      cosc575.p1.DiscreteAttribute

public class DiscreteAttribute
extends Attribute

Stores the attribute information for data sets for machine learning. An attribute has a name, type, and domain. Types can be discrete, numeric, or nominal.

Field Summary

private java.lang.Integer

maxValue the number of values for discrete attributes

Fields inherited from class cosc575.p1.Attribute

name

Constructor Summary

DiscreteAttribute()

DiscreteAttribute(java.util.Scanner scanner)
Explicit constructor.

DiscreteAttribute(java.lang.String name)
Explicit constructor.

Method Summary

void	addValue(int value) Adds or sets a new discrete domain value to this attribute.
int	getSize() Gets the size of this attribute's domain.
static void	main(java.lang.String[] args)
boolean	parse(java.util.Scanner scanner) Processes a single attribute declaration, consisting of the keyword, attribute name, and attribute type.
java.lang.String	toString() Returns a string representation of this attribute.
boolean	validValue(java.lang.Integer value) Returns whether the value is valid for a discrete attribute

Methods inherited from class cosc575.p1.Attribute

getName, setName

Methods inherited from class java.lang.Object

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

Field Detail

maxValue

private java.lang.Integer maxValue

the number of values for discrete attributes

Constructor Detail

DiscreteAttribute

public DiscreteAttribute()

DiscreteAttribute

public DiscreteAttribute(java.lang.String name)
                  throws java.lang.Exception

Explicit constructor. Creates a discrete attribute of the specified name.

Parameters:

name - the name of this attribute

Throws:

java.lang.Exception

DiscreteAttribute

public DiscreteAttribute(java.util.Scanner scanner)
                  throws java.lang.Exception

Explicit constructor. Creates a data set populated with the tokens in the scanner.

Parameters:

scanner - a Scanner containing the data set's tokens

Throws:

java.lang.Exception - if an exception occurs

Method Detail

addValue

public void addValue(int value)
              throws java.lang.Exception

Adds or sets a new discrete domain value to this attribute.

Parameters:

value - the attribute's new domain value

Throws:

java.lang.Exception - if an exception occurs

getSize

public int getSize()
            throws java.lang.Exception

Gets the size of this attribute's domain.

Overrides:

getSize in class Attribute

Returns:

an int storing the size of the domain

Throws:

java.lang.Exception

parse

public boolean parse(java.util.Scanner scanner)
              throws java.lang.Exception

Processes a single attribute declaration, consisting of the keyword, attribute name, and attribute type.

Parameters:

scanner - a scanner containing the data set's tokens

Returns:

true while there are more attribute to process; false otherwise

Throws:

java.lang.Exception - if an exception occurs

toString

public java.lang.String toString()

Returns a string representation of this attribute.

Overrides:

toString in class Attribute

Returns:

a string representation of the names structure

validValue

public boolean validValue(java.lang.Integer value)
                   throws java.lang.Exception

Returns whether the value is valid for a discrete attribute

Parameters:

value - the value for testing

Returns:

true if the value is valid; false otherwise

Throws:

java.lang.Exception - if an exception occurs

main

public static void main(java.lang.String[] args)