Package org.tweetyproject.logics.pl.analysis

Class ContensionSatInconsistencyMeasure

java.lang.Object

org.tweetyproject.logics.commons.analysis.BeliefSetInconsistencyMeasure<PlFormula>

org.tweetyproject.logics.pl.analysis.SatBasedInconsistencyMeasure

org.tweetyproject.logics.pl.analysis.ContensionSatInconsistencyMeasure

All Implemented Interfaces:

PostulateEvaluatable<PlFormula>, InconsistencyMeasure<BeliefSet<PlFormula,?>>

public class ContensionSatInconsistencyMeasure
extends SatBasedInconsistencyMeasure

This class implements a SAT encoding of the contension inconsistency measure, originally proposed in [Grant, Hunter. "Measuring consistency gain and information loss in step-wise inconsistency resolution", ECSQARU'11].
This measure is defined on paraconsistent models (three-valued models with truth values F,T,B) of a knowledge base by taking the minimal number of B-valued propositions needed in a model of the knowledge base.

Author:

Anna Gessler

Field Summary

Fields inherited from interface org.tweetyproject.logics.commons.analysis.InconsistencyMeasure

MEASURE_TOLERANCE

Constructor Summary

Constructors

Constructor	Description
ContensionSatInconsistencyMeasure()	Create a new ContensionSatInconsistencyMeasure with the default SAT solver.
ContensionSatInconsistencyMeasure(SatSolver solver)	Create a new ContensionSatInconsistencyMeasure with the given SAT solver.

Method Summary

Modifier and Type	Method	Description
PlBeliefSet	getSATEncoding(Collection<PlFormula> kb, int upper_bound)
Double	inconsistencyMeasure(Collection<PlFormula> kb)	This method measures the inconsistency of the given set of formulas.
String	toString()

Methods inherited from class org.tweetyproject.logics.commons.analysis.BeliefSetInconsistencyMeasure

inconsistencyMeasure

Methods inherited from class java.lang.Object

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

Constructor Details

ContensionSatInconsistencyMeasure

public ContensionSatInconsistencyMeasure(SatSolver solver)

Create a new ContensionSatInconsistencyMeasure with the given SAT solver.

Parameters:

solver - some SAT solver

ContensionSatInconsistencyMeasure

public ContensionSatInconsistencyMeasure()

Create a new ContensionSatInconsistencyMeasure with the default SAT solver.

Method Details

inconsistencyMeasure

public Double inconsistencyMeasure(Collection<PlFormula> kb)

Description copied from class: BeliefSetInconsistencyMeasure

This method measures the inconsistency of the given set of formulas.

Specified by:

inconsistencyMeasure in class BeliefSetInconsistencyMeasure<PlFormula>

Parameters:

kb - a collection of formulas.

Returns:

a Double indicating the degree of inconsistency.

getSATEncoding

public PlBeliefSet getSATEncoding(Collection<PlFormula> kb,
 int upper_bound)

toString

public String toString()

Overrides:

toString in class Object