Package org.processmining.logfiltering.algorithms.SPMF.PatternMining

Class Itemset

java.lang.Object

org.processmining.logfiltering.algorithms.SPMF.PatternMining.AbstractItemset

org.processmining.logfiltering.algorithms.SPMF.PatternMining.AbstractOrderedItemset

org.processmining.logfiltering.algorithms.SPMF.PatternMining.Itemset

public class Itemset
extends AbstractOrderedItemset

This class represents an itemset (a set of items) implemented as an array of integers with a variable to store the support count of the itemset.

Author:

Philippe Fournier-Viger

Field Summary

Fields

Modifier and Type	Field	Description
int[]	itemset	the array of items
int	support	the support of this itemset
java.util.List<java.lang.Integer>	traceList	List of traces with this Itemset

Constructor Summary

Constructors

Constructor	Description
Itemset()	Constructor
Itemset(int item)	Constructor
Itemset(int[] items)	Constructor
Itemset(java.util.List<java.lang.Integer> itemset, int support, java.util.List<java.lang.Integer> tracelist)	Constructor

Method Summary

Modifier and Type	Method	Description
void	addTrace(int i)
Itemset	cloneItemSetMinusAnItemset(Itemset itemsetToNotKeep)	Make a copy of this itemset but exclude a set of items
Itemset	cloneItemSetMinusOneItem(java.lang.Integer itemToRemove)	Make a copy of this itemset but exclude a given item
java.lang.Integer	get(int position)	Get the item at a given position in this itemset
int	getAbsoluteSupport()	Get the support of this itemset
int[]	getItems()	Get the items as array
java.util.List<java.lang.Integer>	getTraceList()
int	hashCode()
void	increaseTransactionCount()	Increase the support of this itemset by 1
Itemset	intersection(Itemset itemset2)	This method return an itemset containing items that are included in this itemset and in a given itemset
void	setAbsoluteSupport(java.lang.Integer support)	Set the support of this itemset
void	setTraceList(java.util.List<java.lang.Integer> traces)
int	size()	Get the size of this itemset

Methods inherited from class org.processmining.logfiltering.algorithms.SPMF.PatternMining.AbstractOrderedItemset

allTheSameExceptLastItem, allTheSameExceptLastItemV2, contains, containsAll, getLastItem, getRelativeSupport, isEqualTo, isEqualTo, toString

Methods inherited from class org.processmining.logfiltering.algorithms.SPMF.PatternMining.AbstractItemset

getRelativeSupportAsString, print

Methods inherited from class java.lang.Object

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

Field Detail

itemset

public int[] itemset

the array of items

support

public int support

the support of this itemset

traceList

public java.util.List<java.lang.Integer> traceList

List of traces with this Itemset

Constructor Detail

Itemset

public Itemset()

Constructor

Itemset

public Itemset(int item)

Constructor

Parameters:

item - an item that should be added to the new itemset

Itemset

public Itemset(int[] items)

Constructor

Parameters:

items - an array of items that should be added to the new itemset

Itemset

public Itemset(java.util.List<java.lang.Integer> itemset,
               int support,
               java.util.List<java.lang.Integer> tracelist)

Constructor

Parameters:

items - a list of Integer representing items in the itemset

support - the support of the itemset

Method Detail

getItems

public int[] getItems()

Get the items as array

Returns:

the items

getAbsoluteSupport

public int getAbsoluteSupport()

Get the support of this itemset

Specified by:

getAbsoluteSupport in class AbstractOrderedItemset

Returns:

the support of this itemset

getTraceList

public java.util.List<java.lang.Integer> getTraceList()

size

public int size()

Get the size of this itemset

Specified by:

size in class AbstractOrderedItemset

Returns:

the size of this itemset

get

public java.lang.Integer get(int position)

Get the item at a given position in this itemset

Specified by:

get in class AbstractOrderedItemset

Parameters:

position - the position of the item to be returned

Returns:

the item

setAbsoluteSupport

public void setAbsoluteSupport(java.lang.Integer support)

Set the support of this itemset

Parameters:

support - the support

increaseTransactionCount

public void increaseTransactionCount()

Increase the support of this itemset by 1

setTraceList

public void setTraceList(java.util.List<java.lang.Integer> traces)

addTrace

public void addTrace(int i)

cloneItemSetMinusOneItem

public Itemset cloneItemSetMinusOneItem(java.lang.Integer itemToRemove)

Make a copy of this itemset but exclude a given item

Parameters:

itemToRemove - the given item

Returns:

the copy

cloneItemSetMinusAnItemset

public Itemset cloneItemSetMinusAnItemset(Itemset itemsetToNotKeep)

Make a copy of this itemset but exclude a set of items

Parameters:

itemsetToNotKeep - the set of items to be excluded

Returns:

the copy

intersection

public Itemset intersection(Itemset itemset2)

This method return an itemset containing items that are included in this itemset and in a given itemset

Parameters:

itemset2 - the given itemset

Returns:

the new itemset

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object