net.sf.tweety.arg.dung

Class CF2Reasoner

java.lang.Object

net.sf.tweety.commons.Reasoner

net.sf.tweety.arg.dung.AbstractExtensionReasoner

net.sf.tweety.arg.dung.CF2Reasoner

public class CF2Reasoner
extends AbstractExtensionReasoner

This reasoner for Dung theories performs inference on the CF2 extensions.

Author:

Matthias Thimm

Constructor Summary

Constructors

Constructor and Description
CF2Reasoner(BeliefBase beliefBase) Creates a new CF2 reasoner for the given knowledge base using sceptical inference.
CF2Reasoner(BeliefBase beliefBase, int inferenceType) Creates a new CF2 reasoner for the given knowledge base.

Method Summary

Modifier and Type	Method and Description
java.util.Set<Extension>	computeExtensions() Computes the extensions this reasoner bases upon.
private java.util.Collection<Argument>	getOutparents(DungTheory af, java.util.Collection<Argument> s) Returns the set { a in A | a nicht in S und a -> S }
protected PlBeliefSet	getPropositionalCharacterisationBySemantics(java.util.Map<Argument,Proposition> in, java.util.Map<Argument,Proposition> out, java.util.Map<Argument,Proposition> undec) Returns the semantic-specific propositional characterization of the underlying Dung theory, see getPropositionalCharacterisation.
private java.util.Set<Extension>	singleAFExtensions(DungTheory theory) Computes the extensions for the single af case.

Methods inherited from class net.sf.tweety.arg.dung.AbstractExtensionReasoner

getExtensions, getInferenceType, getPropositionalCharacterisation, getReasonerForSemantics, query

Methods inherited from class net.sf.tweety.commons.Reasoner

getKnowledgeBase

Methods inherited from class java.lang.Object

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

Constructor Detail

CF2Reasoner

public CF2Reasoner(BeliefBase beliefBase,
                   int inferenceType)

Creates a new CF2 reasoner for the given knowledge base.

Parameters:

beliefBase - a knowledge base.

inferenceType - The inference type for this reasoner.

CF2Reasoner

public CF2Reasoner(BeliefBase beliefBase)

Creates a new CF2 reasoner for the given knowledge base using sceptical inference.

Parameters:

beliefBase - The knowledge base for this reasoner.

Method Detail

singleAFExtensions

private java.util.Set<Extension> singleAFExtensions(DungTheory theory)

Computes the extensions for the single af case.

Parameters:

theory -

Returns:

computeExtensions

public java.util.Set<Extension> computeExtensions()

Description copied from class: AbstractExtensionReasoner

Computes the extensions this reasoner bases upon.

Specified by:

computeExtensions in class AbstractExtensionReasoner

Returns:

A set of extensions.

getOutparents

private java.util.Collection<Argument> getOutparents(DungTheory af,
                                                     java.util.Collection<Argument> s)

Returns the set { a in A | a nicht in S und a -> S }

Parameters:

af - some Dung theory

s - a set of arguments

Returns:

a set of arguments

getPropositionalCharacterisationBySemantics

protected PlBeliefSet getPropositionalCharacterisationBySemantics(java.util.Map<Argument,Proposition> in,
                                                                  java.util.Map<Argument,Proposition> out,
                                                                  java.util.Map<Argument,Proposition> undec)

Description copied from class: AbstractExtensionReasoner

Returns the semantic-specific propositional characterization of the underlying Dung theory, see getPropositionalCharacterisation.

Specified by:

getPropositionalCharacterisationBySemantics in class AbstractExtensionReasoner

Parameters:

in - propositional variables of in arguments.

out - propositional variables of out arguments.

undec - propositional variables of undec arguments.

Returns:

the semantic-specific propositional characterization of the underlying Dung theory, see getPropositionalCharacterisation.