ca.pfv.spmf.algorithms.sequential_rules.trulegrowth_with_strings

Class Occurence

java.lang.Object

ca.pfv.spmf.algorithms.sequential_rules.trulegrowth_with_strings.Occurence

public class Occurence
extends java.lang.Object

This class represent the first and last occurences of an itemset in a sequence, as defined in the RuleGrowth algorithm.

See Also:

AlgoTRuleGrowth_withStrings, Sequence, SequenceDatabase

Constructor Summary

Constructors

Constructor and Description
Occurence(int sequenceID) Contructor

Method Summary

Modifier and Type	Method and Description
void	add(short occurence) Add an occurence.
boolean	equals(java.lang.Object obj) Check if a given Occurence is the same as this one (used to store occurence in Collections).
short	getFirst() Get the first occurence in this sequence.
short	getLast() Get the last occurence in this sequence.
int	hashCode() Hashcode method.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Occurence

public Occurence(int sequenceID)

Contructor

Parameters:

sequenceID - a sequence ID

Method Detail

add

public void add(short occurence)

Add an occurence.

Parameters:

occurence - the position of an itemset

getFirst

public short getFirst()

Get the first occurence in this sequence.

Returns:

the position of an itemset

getLast

public short getLast()

Get the last occurence in this sequence.

Returns:

the position of an itemset

equals

public boolean equals(java.lang.Object obj)

Check if a given Occurence is the same as this one (used to store occurence in Collections).

Overrides:

equals in class java.lang.Object

Parameters:

obj - another Occurence

Returns:

true if they both have the same sequence ID.

hashCode

public int hashCode()

Hashcode method.

Overrides:

hashCode in class java.lang.Object