ca.pfv.spmf.algorithms.sequentialpatterns.BIDE_and_prefixspan_with_strings

Class SequentialPattern

java.lang.Object

ca.pfv.spmf.algorithms.sequentialpatterns.BIDE_and_prefixspan_with_strings.SequentialPattern

public class SequentialPattern
extends java.lang.Object

This class represents a sequential pattern found by the PrefixSpan or BIDE algorithm. A sequential pattern is represented by these algorithms as a list of itemsets with an associated hash set indicating the IDS of the sequence containing this sequential pattern.

See Also:

AlgoPrefixSpan_with_Strings, AlgoBIDEPlus_withStrings, Itemset

Method Summary

Modifier and Type	Method and Description
Itemset	get(int index) Get an itemset at a given position.
int	getAbsoluteSupport() Get the absolute support of this pattern.
int	getId()
java.util.List<Itemset>	getItemsets() Get the itemsets in this sequential pattern
java.lang.String	getIthItem(int i) Get the ith item in this sequential pattern.
java.lang.String	getRelativeSupportFormated(int sequencecount) Get the relative support of this pattern (a percentage)
java.util.Set<java.lang.Integer>	getSequencesID()
java.lang.String	itemsetsToString() Get a string representation of this sequential pattern.
void	print() Print this sequential pattern to System.out
void	setID(int id2)
int	size() Get the number of itemsets in this sequential pattern.
java.lang.String	toString() Get a string representation of this sequential pattern, containing the sequence IDs of sequence containing this pattern.

Methods inherited from class java.lang.Object

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

Method Detail

getRelativeSupportFormated

public java.lang.String getRelativeSupportFormated(int sequencecount)

Get the relative support of this pattern (a percentage)

Parameters:

sequencecount - the number of sequences in the original database

Returns:

the support as a string

getAbsoluteSupport

public int getAbsoluteSupport()

Get the absolute support of this pattern.

Returns:

the support (an integer >= 1)

print

public void print()

Print this sequential pattern to System.out

toString

public java.lang.String toString()

Get a string representation of this sequential pattern, containing the sequence IDs of sequence containing this pattern.

Overrides:

toString in class java.lang.Object

itemsetsToString

public java.lang.String itemsetsToString()

Get a string representation of this sequential pattern.

getId

public int getId()

getItemsets

public java.util.List<Itemset> getItemsets()

Get the itemsets in this sequential pattern

Returns:

a list of itemsets.

get

public Itemset get(int index)

Get an itemset at a given position.

Parameters:

index - the position

Returns:

the itemset

getIthItem

public java.lang.String getIthItem(int i)

Get the ith item in this sequential pattern.

Parameters:

i - the position of the item.

Returns:

the item or null if the position does not exist.

size

public int size()

Get the number of itemsets in this sequential pattern.

Returns:

the number of itemsets.

getSequencesID

public java.util.Set<java.lang.Integer> getSequencesID()

setID

public void setID(int id2)