LeviBaseRevisionOperator

java.lang.Object
- net.sf.tweety.beliefdynamics.LeviBaseRevisionOperator<T>

Type Parameters:

T - the type of formulas this operators works on.

All Implemented Interfaces:

BaseRevisionOperator<T>
```
public class LeviBaseRevisionOperator<T extends ClassicalFormula>
extends java.lang.Object
implements BaseRevisionOperator<T>
```
This class implements the Levi identity for revision, ie. an revision that is composed of the contraction with the negated formula and then expansion of the formula.

Author:

Matthias Thimm

Constructor Summary

Constructors
Constructor	Description
`LeviBaseRevisionOperator(BaseContractionOperator<T> contraction, BaseExpansionOperator<T> expansion)`	Creates a new Levi base revision with the given contraction and expansion operators.

Method Summary

Modifier and Type Method Description

java.util.Collection<T> revise(java.util.Collection<T> base, T formula)
Revises the given collection of formulas by the given formula.
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - LeviBaseRevisionOperator
```
public LeviBaseRevisionOperator(BaseContractionOperator<T> contraction,
                                BaseExpansionOperator<T> expansion)
```
    Creates a new Levi base revision with the given contraction and expansion operators.
    
    Parameters:
    
    contraction - some contraction operator.
    
    expansion - some expansion operator.
- Method Detail
  - revise
```
public java.util.Collection<T> revise(java.util.Collection<T> base,
                                      T formula)
```
    Description copied from interface: BaseRevisionOperator
    
    Revises the given collection of formulas by the given formula.
    
    Specified by:
    
    revise in interface BaseRevisionOperator<T extends ClassicalFormula>
    
    Parameters:
    
    base - some collection of formulas.
    
    formula - a formula
    
    Returns:
    
    the revised collection.