Package net.sf.tweety.logics.pl.analysis

Class IcebergInconsistencyMeasure

java.lang.Object

net.sf.tweety.logics.commons.analysis.BeliefSetInconsistencyMeasure<PlFormula>

net.sf.tweety.logics.pl.analysis.IcebergInconsistencyMeasure

All Implemented Interfaces:

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

public class IcebergInconsistencyMeasure
extends BeliefSetInconsistencyMeasure<PlFormula>

This class implements the inconsistency measures proposed in [De Bona, Hunter. Localising iceberg inconsistencies. AI 2017].

Author:

Anna Gessler

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	IcebergInconsistencyMeasure.ConsequenceOperation	A consequence operation returns parts of knowledge bases.

Field Summary

Fields inherited from interface net.sf.tweety.logics.commons.analysis.InconsistencyMeasure

MEASURE_TOLERANCE

Constructor Summary

Constructors

Constructor	Description
IcebergInconsistencyMeasure(IcebergInconsistencyMeasure.ConsequenceOperation c)	Creates a new Iceberg Inconsistency Measure with the given consequence operation with default properties.
IcebergInconsistencyMeasure(IcebergInconsistencyMeasure.ConsequenceOperation c, boolean useSumVariant)	Creates a new Iceberg Inconsistency Measure with the given consequence operation.

Method Summary

Modifier and Type	Method	Description
java.util.Collection<java.util.Set<PlFormula>>	getStarConflicts(java.util.Collection<PlFormula> beliefSet)	Computes all *-conflicts of a given belief base.
java.lang.Double	inconsistencyMeasure(java.util.Collection<PlFormula> formulas)	This method measures the inconsistency of the given set of formulas.
void	setConsequenceOperation(IcebergInconsistencyMeasure.ConsequenceOperation consequenceOperation)	Sets the consequence operation for this IcebergInconsistencyMeasure.

Methods inherited from class net.sf.tweety.logics.commons.analysis.BeliefSetInconsistencyMeasure

inconsistencyMeasure

Methods inherited from class java.lang.Object

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

Constructor Detail

IcebergInconsistencyMeasure

public IcebergInconsistencyMeasure(IcebergInconsistencyMeasure.ConsequenceOperation c)

Creates a new Iceberg Inconsistency Measure with the given consequence operation with default properties.

Parameters:

c - a consequence operation

IcebergInconsistencyMeasure

public IcebergInconsistencyMeasure(IcebergInconsistencyMeasure.ConsequenceOperation c,
                                   boolean useSumVariant)

Creates a new Iceberg Inconsistency Measure with the given consequence operation.

Parameters:

c - a consequence operation

useSumVariant - if set to true, the sum variant of the inconsistency measure is used *

Method Detail

inconsistencyMeasure

public java.lang.Double inconsistencyMeasure(java.util.Collection<PlFormula> formulas)

Description copied from class: BeliefSetInconsistencyMeasure

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

Specified by:

inconsistencyMeasure in class BeliefSetInconsistencyMeasure<PlFormula>

Parameters:

formulas - a collection of formulas.

Returns:

a Double indicating the degree of inconsistency.

getStarConflicts

public java.util.Collection<java.util.Set<PlFormula>> getStarConflicts(java.util.Collection<PlFormula> beliefSet)

Computes all *-conflicts of a given belief base. A set of formulas S is a *-conflict iff there are a minimal inconsistent set delta in Cn*(S) and a *-mapping f: delta -> powerset(S).

Parameters:

beliefSet - some belief set

Returns:

all *-conflicts of beliefSet

setConsequenceOperation

public void setConsequenceOperation(IcebergInconsistencyMeasure.ConsequenceOperation consequenceOperation)

Sets the consequence operation for this IcebergInconsistencyMeasure.

Parameters:

consequenceOperation - some consequence operation