ca.pfv.spmf.algorithms.frequentpatterns.clostream

Class AlgoCloSteam

java.lang.Object

ca.pfv.spmf.algorithms.frequentpatterns.clostream.AlgoCloSteam

public class AlgoCloSteam
extends java.lang.Object

This is an implementation of the CloStream algorithm for mining closed itemsets from a stream as proposed by S.J Yen et al.(2009) in the proceedings of the IEA-AIE 2009 conference, pp.773.

It is a very simple algorithm that do not use a minimum support threshold. It thus finds all closed itemsets.

See Also:

Itemset

Constructor Summary

Constructors

Constructor and Description
AlgoCloSteam() Constructor that also initialize the algorithm

Method Summary

Modifier and Type	Method and Description
java.util.List<Itemset>	getClosedItemsets() Get the current list of closed itemsets without the empty set.
void	processNewTransaction(Itemset transaction) This method process a new transaction from a stream to update the set of closed itemsets.

Methods inherited from class java.lang.Object

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

Constructor Detail

AlgoCloSteam

public AlgoCloSteam()

Constructor that also initialize the algorithm

Method Detail

processNewTransaction

public void processNewTransaction(Itemset transaction)

This method process a new transaction from a stream to update the set of closed itemsets.

Parameters:

transaction - a transaction (Itemset)

getClosedItemsets

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

Get the current list of closed itemsets without the empty set.

Returns:

a List of closed itemsets