ca.pfv.spmf.patterns

Class AbstractItemset

java.lang.Object

ca.pfv.spmf.patterns.AbstractItemset

Direct Known Subclasses:

AbstractOrderedItemset

public abstract class AbstractItemset
extends java.lang.Object

This is an abstract class for an itemset (a set of items.

See Also:

AbstractOrderedItemset, AbstractMutableOrderedItemset

Constructor Summary

Constructors

Constructor and Description
AbstractItemset()

Method Summary

Modifier and Type	Method and Description
abstract boolean	contains(java.lang.Integer item) Check if this itemset contains a given item.
abstract int	getAbsoluteSupport() Get the support of this itemset
abstract double	getRelativeSupport(int nbObject) Get the relative support of this itemset (a percentage) as a double
java.lang.String	getRelativeSupportAsString(int nbObject) Get the relative support of this itemset as a string
void	print() print this itemset to System.out.
abstract int	size() Get the size of this itemset
abstract java.lang.String	toString() Get this itemset as a string

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractItemset

public AbstractItemset()

Method Detail

size

public abstract int size()

Get the size of this itemset

Returns:

the size of this itemset

toString

public abstract java.lang.String toString()

Get this itemset as a string

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this itemset

print

public void print()

print this itemset to System.out.

getAbsoluteSupport

public abstract int getAbsoluteSupport()

Get the support of this itemset

Returns:

the support of this itemset

getRelativeSupport

public abstract double getRelativeSupport(int nbObject)

Get the relative support of this itemset (a percentage) as a double

Parameters:

nbObject - the number of transactions in the database where this itemset was found

Returns:

the relative support of the itemset as a double

getRelativeSupportAsString

public java.lang.String getRelativeSupportAsString(int nbObject)

Get the relative support of this itemset as a string

Parameters:

nbObject - the number of transactions in the database where this itemset was found

Returns:

the relative support of the itemset as a string

contains

public abstract boolean contains(java.lang.Integer item)

Check if this itemset contains a given item.

Parameters:

item - the item

Returns:

true if the item is contained in this itemset