NConsInconsistencyMeasure (Tweety (Commons Logic) 1.17 API)

java.lang.Object
- net.sf.tweety.logics.commons.analysis.BeliefSetInconsistencyMeasure<S>
- - net.sf.tweety.logics.commons.analysis.NConsInconsistencyMeasure<S>

Type Parameters:

S - The type of formulas

All Implemented Interfaces:

net.sf.tweety.commons.postulates.PostulateEvaluatable<S>, InconsistencyMeasure<net.sf.tweety.commons.BeliefSet<S,?>>
```
public class NConsInconsistencyMeasure<S extends net.sf.tweety.commons.Formula>
extends BeliefSetInconsistencyMeasure<S>
```
This class implements an inconsistency measure based on "n-consistency" proposed in [Doder,Raskovic,Markovic,Ognjanovic. Measures of inconsistency and defaults. IJAR 51:832-845, 2010.] A knowledge base K is called maximal n-consistent (for a natural number n) if every subset of K of size n is consistent, and this is not true for n+1. As a measure of inconsistency we define I(K) = |K|-n (in order to have I(K)=0 for consistent K). We use a simple characterization of this measure: K is maximal n-consistent iff n+1 is the size of the smallest minimal (wrt. set cardinality) inconsistent subset of K (if K is inconsistent, otherwise n=|K|).

Author:

Matthias Thimm

- Field Summary
  - Fields inherited from interface net.sf.tweety.logics.commons.analysis.InconsistencyMeasure
    MEASURE_TOLERANCE
- Constructor Summary
  
  Constructors
  Constructor Description
  
  NConsInconsistencyMeasure(MusEnumerator<S> enumerator)
  Creates a new inconsistency measure.
- Method Summary
  
  Modifier and Type Method Description
  
  Double inconsistencyMeasure(Collection<S> formulas)
  This method measures the inconsistency of the given set of formulas.
  - Methods inherited from class net.sf.tweety.logics.commons.analysis.BeliefSetInconsistencyMeasure
    inconsistencyMeasure
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NConsInconsistencyMeasure
```
public NConsInconsistencyMeasure(MusEnumerator<S> enumerator)
```
    Creates a new inconsistency measure.
    
    Parameters:
    
    enumerator - some MUs enumerator
- Method Detail
  - inconsistencyMeasure
```
public Double inconsistencyMeasure(Collection<S> formulas)
```
    Description copied from class: BeliefSetInconsistencyMeasure
    
    This method measures the inconsistency of the given set of formulas.
    
    Specified by:
    
    inconsistencyMeasure in class BeliefSetInconsistencyMeasure<S extends net.sf.tweety.commons.Formula>
    
    Parameters:
    
    formulas - a collection of formulas.
    
    Returns:
    
    a Double indicating the degree of inconsistency.