ca.pfv.spmf.algorithms.sequentialpatterns.spade_spam_AGP

Class FrequentPatternEnumeration_SPAM

java.lang.Object

ca.pfv.spmf.algorithms.sequentialpatterns.spade_spam_AGP.FrequentPatternEnumeration_SPAM

public class FrequentPatternEnumeration_SPAM
extends java.lang.Object

This is an implementation of the main methods of SPAM algorithm. We keep open the decision of which IdList to use. In the original paper, the authors use a bitmap implementation. We have such implementation (IDListFatBitmap) but we also have other two ones (both based on hash maps, one with bitsets (IDListBitmap) and another with arraylists (IDListStandard_Map)). NOTE: This implementation saves the pattern to a file as soon as they are found or can keep the pattern into memory, depending on what the user choose. 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
FrequentPatternEnumeration_SPAM(double minSupportAbsolute, Saver saver) Standard constructor of the class.

Method Summary

Modifier and Type	Method and Description
void	execute(EquivalenceClass equivalenceClass, boolean keepPatterns, boolean verbose) Execution of the search of frequent patterns.
int	getFrequentPatterns() It returns the number of frequent patterns found by the last execution of the algorithm.
void	setFrequentPatterns(int frequentPatterns)

Methods inherited from class java.lang.Object

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

Constructor Detail

FrequentPatternEnumeration_SPAM

public FrequentPatternEnumeration_SPAM(double minSupportAbsolute,
                                       Saver saver)

Standard constructor of the class.

Parameters:

minSupportAbsolute - The absolute minimum support threshold

saver - Saver object to decide where the user want to save the results, if it the case

Method Detail

execute

public void execute(EquivalenceClass equivalenceClass,
                    boolean keepPatterns,
                    boolean verbose)

Execution of the search of frequent patterns.

Parameters:

equivalenceClass - The equivalence class from we start to search for.

keepPatterns - Flag to indicate if we want to keep the patterns found.

verbose - Flag for debugging purposes

getFrequentPatterns

public int getFrequentPatterns()

It returns the number of frequent patterns found by the last execution of the algorithm.

Returns:

the number of frequent patterns found.

setFrequentPatterns

public void setFrequentPatterns(int frequentPatterns)