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

Class SequenceDatabase

java.lang.Object

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

public class SequenceDatabase
extends java.lang.Object

Inspired in SPMF Implementation of a sequence database, where each sequence is implemented as an array of integers and should have a unique id. See examples in /test/ directory for the format of input files. Copyright (c) 2013 Antonio Gomariz Peñalver 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
SequenceDatabase(AbstractionCreator abstractionCreator)

Method Summary

Modifier and Type	Method and Description
void	addSequence(Sequence sequence)
void	addSequence(java.lang.String[] integers) It creates and addes the sequence found in the array of Strings
void	clear()
java.util.List<Pattern>	frequentItems() It returns the frequent 1-patterns
java.util.Map<Item,Pattern>	getFrequentItems() It return a map where are associated each frequent item with the 1-pattern composed by itself
java.util.List<Sequence>	getSequences()
void	loadFile(java.lang.String path, double minSupportAbsolute) It loads the database contained in the file path given as parameter.
int	size()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceDatabase

public SequenceDatabase(AbstractionCreator abstractionCreator)

Method Detail

loadFile

public void loadFile(java.lang.String path,
                     double minSupportAbsolute)
              throws java.io.IOException

It loads the database contained in the file path given as parameter. Besides, all the frequent 1-patterns are identified and the original database is updated by removing the non-frequent items

Parameters:

path - File path of the original database

minSupportAbsolute - Minimum absolute support

Throws:

java.io.IOException

addSequence

public void addSequence(java.lang.String[] integers)

It creates and addes the sequence found in the array of Strings

Parameters:

integers -

addSequence

public void addSequence(Sequence sequence)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

size

public int size()

getSequences

public java.util.List<Sequence> getSequences()

frequentItems

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

It returns the frequent 1-patterns

Returns:

the list of frequent items.

getFrequentItems

public java.util.Map<Item,Pattern> getFrequentItems()

It return a map where are associated each frequent item with the 1-pattern composed by itself

Returns:

the map

clear

public void clear()