Package net.sf.tweety.preferences.aggregation

Class DynamicScoringPreferenceAggregator<T>

java.lang.Object

net.sf.tweety.preferences.aggregation.DynamicScoringPreferenceAggregator<T>

Type Parameters:

T - generic preference order type

All Implemented Interfaces:

DynamicPreferenceAggregator<T>

Direct Known Subclasses:

DynamicBordaScoringPreferenceAggregator, DynamicPluralityScoringPreferenceAggregator, DynamicVetoScoringPreferenceAggregator

public abstract class DynamicScoringPreferenceAggregator<T>
extends java.lang.Object
implements DynamicPreferenceAggregator<T>

This Demo-class provides a basic implementation similar to the ScoringPreferenceAggregator but dynamic aggregation instead of static

Author:

Bastian Wolf

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.ArrayList<UpdateListener<T>>	_listeners	The list containing the update listeners
private WeightVector	v	The weight vector for the aggregator given via the constructor

Constructor Summary

Constructors

Constructor	Description
DynamicScoringPreferenceAggregator(WeightVector v)	Constructor with given weight vector

Method Summary

Modifier and Type	Method	Description
void	addListener(UpdateListener<T> listener)	adds a listener to this dynamic preference aggregator
PreferenceOrder<T>	aggregate(java.util.List<PreferenceOrder<T>> input)	This method aggregates the given preference orders according to the WeightVector used within construction
private void	fireEvent(UpdateEvent<T> event)	Fires an event every time a change occurred
void	removeListener(UpdateListener<T> listener)	removes a listener from this dynamic preference aggregator
PreferenceOrder<T>	update(Update<T> update, java.util.List<PreferenceOrder<T>> input)	The update-method for dynamically changing the input for preference aggregation
PreferenceOrder<T>	update(UpdateStream<T> stream, java.util.List<PreferenceOrder<T>> input)	this method extends the update-functionality with input-streams consisting of Update-elements

Methods inherited from class java.lang.Object

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

Field Detail

v

private WeightVector v

The weight vector for the aggregator given via the constructor

_listeners

private java.util.ArrayList<UpdateListener<T>> _listeners

The list containing the update listeners

Constructor Detail

DynamicScoringPreferenceAggregator

public DynamicScoringPreferenceAggregator(WeightVector v)

Constructor with given weight vector

Parameters:

v - the weight vector

Method Detail

aggregate

public PreferenceOrder<T> aggregate(java.util.List<PreferenceOrder<T>> input)

This method aggregates the given preference orders according to the WeightVector used within construction

Specified by:

aggregate in interface DynamicPreferenceAggregator<T>

Parameters:

input - the array of preference orders to be aggregated

Returns:

the final result as a preference order

update

public PreferenceOrder<T> update(Update<T> update,
                                 java.util.List<PreferenceOrder<T>> input)
                          throws java.lang.IndexOutOfBoundsException,
                                 java.lang.NullPointerException

The update-method for dynamically changing the input for preference aggregation

Specified by:

update in interface DynamicPreferenceAggregator<T>

Parameters:

update - the update element containing the changes to be applied

input - some input

Returns:

a preference order

Throws:

java.lang.IndexOutOfBoundsException

java.lang.NullPointerException

update

public PreferenceOrder<T> update(UpdateStream<T> stream,
                                 java.util.List<PreferenceOrder<T>> input)

this method extends the update-functionality with input-streams consisting of Update-elements

Parameters:

stream - the input stream with the Update-elements

input - some input

Returns:

the newly aggregated preference order after all updates are applied

fireEvent

private void fireEvent(UpdateEvent<T> event)

Fires an event every time a change occurred

Parameters:

event - the update event

addListener

public void addListener(UpdateListener<T> listener)

adds a listener to this dynamic preference aggregator

Specified by:

addListener in interface DynamicPreferenceAggregator<T>

Parameters:

listener - an update listener

removeListener

public void removeListener(UpdateListener<T> listener)

removes a listener from this dynamic preference aggregator

Specified by:

removeListener in interface DynamicPreferenceAggregator<T>

Parameters:

listener - an update listener