Package org.tweetyproject.arg.prob.reasoner

Class SimplePafReasoner

java.lang.Object

org.tweetyproject.arg.prob.reasoner.AbstractPafReasoner

org.tweetyproject.arg.prob.reasoner.SimplePafReasoner

All Implemented Interfaces:

QuantitativeReasoner<ProbabilisticArgumentationFramework,Argument>, Reasoner<Double,ProbabilisticArgumentationFramework,Argument>

public class SimplePafReasoner
extends AbstractPafReasoner

This class implements a naive algorithm for computing probabilities of extensions in probabilistic argumentation frameworks from [Li, Oren, Norman. Probabilistic Argumentation Frameworks. TAFA'2011]. It considers all subgraphs and computes therefore exact probabilities

Author:

Matthias Thimm

Constructor Summary

Constructors

Constructor	Description
SimplePafReasoner(Semantics semantics)	Creates a new reasoner.

Method Summary

Modifier and Type	Method	Description
boolean	isInstalled()
Double	query(ProbabilisticArgumentationFramework paf, Extension ext)	Estimates the probability that the given set of arguments is an extension
Double	query(ProbabilisticArgumentationFramework beliefbase, Argument formula, InferenceMode inferenceMode)	Queries the given PAF for the given argument using the given inference type.

Methods inherited from class org.tweetyproject.arg.prob.reasoner.AbstractPafReasoner

query

Methods inherited from class java.lang.Object

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

Constructor Details

SimplePafReasoner

public SimplePafReasoner(Semantics semantics)

Creates a new reasoner.

Parameters:

semantics - semantics used for determining extensions.

Method Details

query

public Double query(ProbabilisticArgumentationFramework paf,
 Extension ext)

Estimates the probability that the given set of arguments is an extension

Specified by:

query in class AbstractPafReasoner

Parameters:

paf - a PAF

ext - some set of arguments

Returns:

the estimated probability of the given set to be an extension

query

public Double query(ProbabilisticArgumentationFramework beliefbase,
 Argument formula,
 InferenceMode inferenceMode)

Description copied from class: AbstractPafReasoner

Queries the given PAF for the given argument using the given inference type.

Specified by:

query in class AbstractPafReasoner

Parameters:

beliefbase - an PAF

formula - a single argument

inferenceMode - either InferenceMode.SKEPTICAL or InferenceMode.CREDULOUS

Returns:

probability of the argument

isInstalled

public boolean isInstalled()

Returns:

if reasoner is installed