net.sf.tweety.arg.lp.semantics

Class AttackRelation

java.lang.Object

net.sf.tweety.arg.lp.semantics.AttackRelation

public class AttackRelation
extends java.lang.Object

This class represents an attack relation for a specific set of arguments represented by an ArgumentationKnowledgeBase.

Author:

Sebastian Homann

Field Summary

Fields

Modifier and Type	Field and Description
private ArgumentationKnowledgeBase	kb
private AttackStrategy	strategy

Constructor Summary

Constructors

Constructor and Description
AttackRelation(ArgumentationKnowledgeBase kb, AttackStrategy strategy) Creates a new AttackRelation for an argumentation knowledgebase and a certain notion of attack.

Method Summary

Modifier and Type	Method and Description
boolean	attacks(Argument a, Argument b) Returns true iff argument a attacks argument b for the notion of attack represented by this attack relation.
boolean	attacks(java.util.Set<Argument> attacker, Argument b) Is true iff at least one attacking argument attacks b
java.util.Set<Argument>	getAttackingArguments(Argument a) Returns all arguments from the knowledgebase, that attack argument a.

Methods inherited from class java.lang.Object

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

Field Detail

kb

private ArgumentationKnowledgeBase kb

strategy

private AttackStrategy strategy

Constructor Detail

AttackRelation

public AttackRelation(ArgumentationKnowledgeBase kb,
                      AttackStrategy strategy)

Creates a new AttackRelation for an argumentation knowledgebase and a certain notion of attack.

Parameters:

kb - an argument knowledge base

strategy - a notion of attack for arguments in the knowledgebase

Method Detail

attacks

public boolean attacks(Argument a,
                       Argument b)

Returns true iff argument a attacks argument b for the notion of attack represented by this attack relation.

Parameters:

a - an argument

b - another argument

Returns:

true iff argument a attacks argument b

attacks

public boolean attacks(java.util.Set<Argument> attacker,
                       Argument b)

Is true iff at least one attacking argument attacks b

Parameters:

attacker - a set of arguments

b - argument to be attacked by one or more arguments from the attacking set

Returns:

true iff at least one argument from attacker attacks b

getAttackingArguments

public java.util.Set<Argument> getAttackingArguments(Argument a)

Returns all arguments from the knowledgebase, that attack argument a.

Parameters:

a - an argument

Returns:

the set of arguments from kb, that attack argument a