ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.abstractions

Class Abstraction_Qualitative

java.lang.Object

ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.abstractions.Abstraction_Generic

ca.pfv.spmf.algorithms.sequentialpatterns.prefixSpan_AGP.items.abstractions.Abstraction_Qualitative

All Implemented Interfaces:

java.lang.Comparable<Abstraction_Generic>

public class Abstraction_Qualitative
extends Abstraction_Generic

Class that implements a qualitative abstraction. Two different values are possible: to be with an equal relation with respect to a previous pair (if occurs at the same time), or to be with an after relation with respect to that previous pair (the previous pair have a before relation with respect to this one) 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 .

Method Summary

Modifier and Type	Method and Description
static void	clear()
int	compareTo(Abstraction_Generic arg)
boolean	compute(PseudoSequence sequence, int projection, int itemsetIndex) It returns true if the projection indicated starts in the middle of an itemset and the abstraction is an equal relation, or if the projection starts in the first item of the itemset and the abstraction does not have an equal relation.
static Abstraction_Qualitative	create(boolean equalRelation) It creates a new abstraction with the given value.
boolean	equals(java.lang.Object arg) It checks if this abstraction is equal to another abstraction
boolean	hasEqualRelation()
int	hashCode() It returns the hash code associated with an abstraction
java.lang.String	toString() It returns a string representation of an abstraction
java.lang.String	toStringToFile() Get the string representation of this abstraction.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

clear

public static void clear()

create

public static Abstraction_Qualitative create(boolean equalRelation)

It creates a new abstraction with the given value.

Parameters:

equalRelation -

Returns:

the abstraction

equals

public boolean equals(java.lang.Object arg)

Description copied from class: Abstraction_Generic

It checks if this abstraction is equal to another abstraction

Specified by:

equals in class Abstraction_Generic

Parameters:

arg - the other abstraction

Returns:

true if equal. Otherwise, false.

hashCode

public int hashCode()

Description copied from class: Abstraction_Generic

It returns the hash code associated with an abstraction

Specified by:

hashCode in class Abstraction_Generic

Returns:

the hash code

compareTo

public int compareTo(Abstraction_Generic arg)

hasEqualRelation

public boolean hasEqualRelation()

toString

public java.lang.String toString()

Description copied from class: Abstraction_Generic

It returns a string representation of an abstraction

Specified by:

toString in class Abstraction_Generic

Returns:

a string

toStringToFile

public java.lang.String toStringToFile()

Get the string representation of this abstraction. Adjusted to SPMF format.

Specified by:

toStringToFile in class Abstraction_Generic

Returns:

the string representation

compute

public boolean compute(PseudoSequence sequence,
                       int projection,
                       int itemsetIndex)

It returns true if the projection indicated starts in the middle of an itemset and the abstraction is an equal relation, or if the projection starts in the first item of the itemset and the abstraction does not have an equal relation.

Specified by:

compute in class Abstraction_Generic

Parameters:

sequence - The sequence in which we apply the method

projection - The projection of the pseudosequence in which we are interested

itemsetIndex - The itemset index

Returns:

true if the above condition is met.