ca.pfv.spmf.patterns.itemset_array_integers_with_tids_bitset

Class Itemsets

java.lang.Object

ca.pfv.spmf.patterns.itemset_array_integers_with_tids_bitset.Itemsets

public class Itemsets
extends java.lang.Object

This class represents a set of itemsets where an itemset is an array of integer with a tid list represented by a list of integers. Itemsets are ordered by size. For example, level 1 means itemsets of size 1 (that contains 1 item).

Constructor Summary

Constructors

Constructor and Description
Itemsets(java.lang.String name) Constructor

Method Summary

Modifier and Type	Method and Description
void	addItemset(Itemset itemset, int k) Add an itemset to this structure
void	decreaseItemsetCount() Decrease the count of itemsets stored in this structure by 1.
int	getItemsetsCount() Get the total number of itemsets
java.util.List<java.util.List<Itemset>>	getLevels() Get all itemsets.
void	printItemsets(int nbObject) Print all itemsets to System.out, ordered by their size.
void	setName(java.lang.String name) Set the name of this group of itemsets

Methods inherited from class java.lang.Object

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

Constructor Detail

Itemsets

public Itemsets(java.lang.String name)

Constructor

Parameters:

name - the name of these itemsets

Method Detail

printItemsets

public void printItemsets(int nbObject)

Print all itemsets to System.out, ordered by their size.

Parameters:

nbObject - The number of transaction/sequence in the database where there itemsets were found.

addItemset

public void addItemset(Itemset itemset,
                       int k)

Add an itemset to this structure

Parameters:

itemset - the itemset

k - the number of items contained in the itemset

getLevels

public java.util.List<java.util.List<Itemset>> getLevels()

Get all itemsets.

Returns:

A list of list of itemsets. Position i in this list is the list of itemsets of size i.

getItemsetsCount

public int getItemsetsCount()

Get the total number of itemsets

Returns:

the number of itemsets.

setName

public void setName(java.lang.String name)

Set the name of this group of itemsets

Parameters:

string - the new name

decreaseItemsetCount

public void decreaseItemsetCount()

Decrease the count of itemsets stored in this structure by 1.