Package org.tweetyproject.arg.aba.reasoner

Class GeneralAbaReasoner<T extends Formula>

java.lang.Object

org.tweetyproject.arg.aba.reasoner.GeneralAbaReasoner<T>

Type Parameters:

T - the language of the underlying ABA theory

All Implemented Interfaces:

ModelProvider<Assumption<T>,AbaTheory<T>,AbaExtension<T>>, QualitativeReasoner<AbaTheory<T>,Assumption<T>>, Reasoner<Boolean,AbaTheory<T>,Assumption<T>>

Direct Known Subclasses:

CompleteReasoner, FlatAbaReasoner, IdealReasoner, PreferredReasoner, StableReasoner, WellFoundedReasoner

public abstract class GeneralAbaReasoner<T extends Formula>
extends Object
implements QualitativeReasoner<AbaTheory<T>,Assumption<T>>, ModelProvider<Assumption<T>,AbaTheory<T>,AbaExtension<T>>

This is an abstract generalization over non-flat ABA reasoners.

Author:

Nils Geilen (geilenn@uni-koblenz.de), Matthias Thimm

Constructor Summary

Constructors

Constructor	Description
GeneralAbaReasoner()	Default

Method Summary

Modifier and Type	Method	Description
AbaExtension<T>	getModel(AbaTheory<T> bbase)	Returns a single (dedicated) model of the given belief base.
abstract Collection<AbaExtension<T>>	getModels(AbaTheory<T> bbase)	Returns a characterizing model of the given belief base
Boolean	query(AbaTheory<T> beliefbase, Assumption<T> query)	Queries the given belief base with the provided formula and returns a boolean result.
Boolean	query(AbaTheory<T> beliefbase, Assumption<T> query, InferenceMode inferenceMode)	Queries the given ABA theory for the given assumption using the given inference type.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.tweetyproject.commons.QualitativeReasoner

isInstalled

Constructor Details

GeneralAbaReasoner

public GeneralAbaReasoner()

Default

Method Details

query

public Boolean query(AbaTheory<T> beliefbase,
 Assumption<T> query)

Description copied from interface: QualitativeReasoner

Queries the given belief base with the provided formula and returns a boolean result. The result indicates whether the formula is entailed or satisfied by the belief base according to the qualitative reasoning method implemented by the reasoner.

Specified by:

query in interface QualitativeReasoner<AbaTheory<T extends Formula>,Assumption<T extends Formula>>

Specified by:

query in interface Reasoner<Boolean,AbaTheory<T extends Formula>,Assumption<T extends Formula>>

Parameters:

beliefbase - The belief base to be queried.

query - The formula for which the query is made.

Returns:

`TRUE` if the formula is entailed or satisfied by the belief base, `FALSE` otherwise.

query

public Boolean query(AbaTheory<T> beliefbase,
 Assumption<T> query,
 InferenceMode inferenceMode)

Queries the given ABA theory for the given assumption using the given inference type.

Parameters:

beliefbase - an ABA theory

query - some assumption

inferenceMode - either InferenceMode.SKEPTICAL or InferenceMode.CREDULOUS

Returns:

"true" if the query is accepted

getModels

public abstract Collection<AbaExtension<T>> getModels(AbaTheory<T> bbase)

Description copied from interface: ModelProvider

Returns a characterizing model of the given belief base

Specified by:

getModels in interface ModelProvider<Assumption<T extends Formula>,AbaTheory<T extends Formula>,AbaExtension<T extends Formula>>

Parameters:

bbase - some belief base

Returns:

the (selected) models of the belief base

getModel

public AbaExtension<T> getModel(AbaTheory<T> bbase)

Description copied from interface: ModelProvider

Returns a single (dedicated) model of the given belief base. If the implemented method allows for more than one dedicated model, the selection may be non-deterministic.

Specified by:

getModel in interface ModelProvider<Assumption<T extends Formula>,AbaTheory<T extends Formula>,AbaExtension<T extends Formula>>

Parameters:

bbase - some belief base

Returns:

a selected model of the belief base.