ca.pfv.spmf.algorithms.sequentialpatterns.gsp_AGP.items

Class Sequences

java.lang.Object

ca.pfv.spmf.algorithms.sequentialpatterns.gsp_AGP.items.Sequences

public class Sequences
extends java.lang.Object

Inspired in SPMF This class implements a list of frequent sequence lists (or frequent pattern lists) that it is organized by levels. That level contains all of sequences that have a concrete number of items. Therefore, we allocate 1-sequences in level 1, 2-sequences in level 2, and so forth... 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 .

Field Summary

Fields

Modifier and Type	Field and Description
java.util.List<java.util.List<Pattern>>	levels List of lists, where each list contains the frequent patterns of a concrete length
int	numberOfFrequentSequences Number of frequent sequences

Constructor Summary

Constructors

Constructor and Description
Sequences(java.lang.String string)

Method Summary

Modifier and Type	Method and Description
void	addSequence(Pattern sequence, int levelIndex) Method that adds a sequence in a given level
void	addSequences(java.util.List<Pattern> sequences, int levelIndex) Method that adds a sequence set in a given level
void	clear() It clears the structure
void	delete(int i) It completely deletes a concrete level of sequences
java.util.List<Pattern>	getLevel(int index) Get the frequent sequences that appear in a particular level
int	getLevelCount() It gives us the total number of levels.
java.util.List<java.util.List<Pattern>>	getLevels() It obtains a list of pattern lists, being each pattern list the frequent sequences with a concrete length For example, at position 1, it is the list of patterns of size 1.
void	printFrequentSequences() Print all the levels of the structure in the standard output
int	size() It returns the total number of sequences
void	sort() Method to sort each level of the structure
java.lang.String	toString() Method that give us in a string the content of all Sequences structure
java.lang.String	toStringToFile() Method that give us in a string the content of all Sequences structure in a SPMF format

Methods inherited from class java.lang.Object

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

Field Detail

levels

public java.util.List<java.util.List<Pattern>> levels

List of lists, where each list contains the frequent patterns of a concrete length

numberOfFrequentSequences

public int numberOfFrequentSequences

Number of frequent sequences

Constructor Detail

Sequences

public Sequences(java.lang.String string)

Method Detail

printFrequentSequences

public void printFrequentSequences()

Print all the levels of the structure in the standard output

toString

public java.lang.String toString()

Method that give us in a string the content of all Sequences structure

Overrides:

toString in class java.lang.Object

Returns:

the string

toStringToFile

public java.lang.String toStringToFile()

Method that give us in a string the content of all Sequences structure in a SPMF format

Returns:

the string

addSequence

public void addSequence(Pattern sequence,
                        int levelIndex)

Method that adds a sequence in a given level

Parameters:

sequence - a sequence to add

levelIndex - the level where the sequence must be

addSequences

public void addSequences(java.util.List<Pattern> sequences,
                         int levelIndex)

Method that adds a sequence set in a given level

Parameters:

sequences - a sequence list to add

levelIndex - the level where the sequence must be

getLevel

public java.util.List<Pattern> getLevel(int index)

Get the frequent sequences that appear in a particular level

Parameters:

index - the frequent sequences of that level

Returns:

the list of pattern of this level

getLevelCount

public int getLevelCount()

It gives us the total number of levels. Notice that we discount the level 0

Returns:

the number of levels.

getLevels

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

It obtains a list of pattern lists, being each pattern list the frequent sequences with a concrete length For example, at position 1, it is the list of patterns of size 1. at position 2, it is the list of patterns of size 2 ... etc.

Returns:

the list of pattern lists.

size

public int size()

It returns the total number of sequences

Returns:

the total number of sequences

sort

public void sort()

Method to sort each level of the structure

delete

public void delete(int i)

It completely deletes a concrete level of sequences

Parameters:

i -

clear

public void clear()

It clears the structure