ca.pfv.spmf.algorithms.frequentpatterns.two_phase

Class TransactionTP

java.lang.Object

ca.pfv.spmf.algorithms.frequentpatterns.two_phase.TransactionTP

public class TransactionTP
extends java.lang.Object

This class represents a transaction (a set of items) from a transaction database with utility values, as used by the Two-Phase algorithm for high utility itemset mining.

See Also:

AlgoTwoPhase, UtilityTransactionDatabaseTP

Constructor Summary

Constructors

Constructor and Description
TransactionTP(java.util.List<java.lang.Integer> items, java.util.List<java.lang.Integer> itemsUtilities, int transactionUtility) Constructor

Method Summary

Modifier and Type	Method and Description
boolean	contains(int item) Check if this transaction contains an item.
boolean	contains(java.lang.Integer item) Check if this transaction contains an item.
java.lang.Integer	get(int index) Get the item at a given position.
java.util.List<java.lang.Integer>	getItems() Get the list of items.
java.util.List<java.lang.Integer>	getItemsUtilities() Get the item utilities for this transaction.
int	getTransactionUtility() Get the transaction utility of this transaction.
void	print() Print the transaction to System.out
int	size() Get the number of items in this transaction.
java.lang.String	toString() Return a string representation of this transaction.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionTP

public TransactionTP(java.util.List<java.lang.Integer> items,
                     java.util.List<java.lang.Integer> itemsUtilities,
                     int transactionUtility)

Constructor

Parameters:

items - list of items

itemsUtilities - list of corresponding utility values

transactionUtility - the transaction utility

Method Detail

getItems

public java.util.List<java.lang.Integer> getItems()

Get the list of items.

Returns:

a list of items (Integer)

get

public java.lang.Integer get(int index)

Get the item at a given position.

Parameters:

index - the position

Returns:

the item

print

public void print()

Print the transaction to System.out

toString

public java.lang.String toString()

Return a string representation of this transaction.

Overrides:

toString in class java.lang.Object

contains

public boolean contains(java.lang.Integer item)

Check if this transaction contains an item.

Parameters:

item - the given item

Returns:

true if yes, otherwise false.

contains

public boolean contains(int item)

Check if this transaction contains an item.

Parameters:

item - the given item

Returns:

true if yes, otherwise false.

size

public int size()

Get the number of items in this transaction.

Returns:

the item count

getItemsUtilities

public java.util.List<java.lang.Integer> getItemsUtilities()

Get the item utilities for this transaction.

Returns:

a list containing the item utilities

getTransactionUtility

public int getTransactionUtility()

Get the transaction utility of this transaction.

Returns:

an integer