ca.pfv.spmf.algorithms.sequentialpatterns.clospan_AGP.items

Class Pair

java.lang.Object

ca.pfv.spmf.algorithms.sequentialpatterns.clospan_AGP.items.Pair

All Implemented Interfaces:

java.lang.Comparable<Pair>

public class Pair
extends java.lang.Object
implements java.lang.Comparable<Pair>

This class is used by PrefixSpan and it is based on SPMF original PrefixSpan Algorithm. It represents, based on Hirate & Yamana a pair of an Item and its occurrences in the projected database. It is used for calculating the support of item in a database. Copyright Antonio Gomariz Peñalver 2013 This file is part of the SPMF DATA MINING SOFTWARE (http://www.philippe-fournier-viger.com/spmf). SPMF is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. SPMF is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with SPMF. If not, see .

Constructor Summary

Constructors

Constructor and Description
Pair(boolean postfix, ItemAbstractionPair pair) Standard constructor

Method Summary

Modifier and Type	Method and Description
int	compareTo(Pair o)
boolean	equals(java.lang.Object object) Method to know this pair is equal to another.
ItemAbstractionPair	getPar()
java.util.BitSet	getSequencesID() It returns the list of the sequences where the pair appears
int	getSupport() Get the number of sequences where the pair appears.
int	hashCode()
boolean	isPostfix()
void	setSequencesID(java.util.BitSet sequencesID)
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Pair

public Pair(boolean postfix,
            ItemAbstractionPair pair)

Standard constructor

Parameters:

postfix - flag indicating if it is an item appearing in the same itemset as that one from the projection was done

pair - pair appearing after the item of the projection

Method Detail

equals

public boolean equals(java.lang.Object object)

Method to know this pair is equal to another.

Overrides:

equals in class java.lang.Object

Parameters:

object - the other pair

Returns:

true if equal

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

isPostfix

public boolean isPostfix()

getPar

public ItemAbstractionPair getPar()

getSupport

public int getSupport()

Get the number of sequences where the pair appears.

Returns:

the number of sequences.

getSequencesID

public java.util.BitSet getSequencesID()

It returns the list of the sequences where the pair appears

Returns:

the list of sequnces as a bitset.

setSequencesID

public void setSequencesID(java.util.BitSet sequencesID)

compareTo

public int compareTo(Pair o)

Specified by:

compareTo in interface java.lang.Comparable<Pair>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object