ca.pfv.spmf.algorithms.frequentpatterns.itemsettree

Class HashTableIT

java.lang.Object

ca.pfv.spmf.algorithms.frequentpatterns.itemsettree.HashTableIT

public class HashTableIT
extends java.lang.Object

This class represents a hash table for storing itemsets. Copyright (c) 2008-2012 Philippe Fournier-Viger 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<Itemset>[]	table

Constructor Summary

Constructors

Constructor and Description
HashTableIT(int size) Constructor

Method Summary

Modifier and Type	Method and Description
int	hashCode(int[] items) Calculate the hashcode of an itemset.
void	put(int[] items, int support) Add an itemset to the hash table.

Methods inherited from class java.lang.Object

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

Field Detail

table

public java.util.List<Itemset>[] table

Constructor Detail

HashTableIT

public HashTableIT(int size)

Constructor

Parameters:

size - the size of the internal array

Method Detail

put

public void put(int[] items,
                int support)

Add an itemset to the hash table.

Parameters:

items - an itemset represented as a int array.

support - the support of the itemset

hashCode

public int hashCode(int[] items)

Calculate the hashcode of an itemset.

Parameters:

items - an itemset

Returns:

the hashcode as a int