net.sf.tweety.lp.asp.beliefdynamics.baserevision

Class ScreenedMaxichoiceConsolidation

java.lang.Object

net.sf.tweety.lp.asp.beliefdynamics.baserevision.ScreenedMaxichoiceConsolidation

All Implemented Interfaces:

ConsolidationOperator<Rule>

public class ScreenedMaxichoiceConsolidation
extends java.lang.Object
implements ConsolidationOperator<Rule>

This class implements the screened maxi-choice consolidation operator from [1]. [1] Kruempelmann, Patrick und Gabriele Kern-Isberner: Belief Base Change Operations for Answer Set Programming. In: Cerro, Luis Farinas, Andreas Herzig und Jerome Mengin (Herausgeber): Proceedings of the 13th European conference on Logics in Artificial Intelligence, Band 7519, Seiten 294-306, Toulouse, France, 2012. Springer Berlin Heidelberg.

Author:

Sebastian Homann

Field Summary

Fields

Modifier and Type	Field and Description
private Program	screen
private SelectionFunction<Rule>	selection
private Solver	solver

Constructor Summary

Constructors

Constructor and Description
ScreenedMaxichoiceConsolidation(Program screen, SelectionFunction<Rule> selection, Solver solver) Creates a new screened maxi-choice consolidation operator with the given screen, selection function and a link to an answer set solver.

Method Summary

Modifier and Type	Method and Description
java.util.Collection<Rule>	consolidate(java.util.Collection<Rule> p) Returns a consolidation of set p, i.e.
Program	consolidate(Program p) Calculates the screened consolidation !r of program p using a maxi-choice selection function s, i.e.

Methods inherited from class java.lang.Object

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

Field Detail

screen

private Program screen

selection

private SelectionFunction<Rule> selection

solver

private Solver solver

Constructor Detail

ScreenedMaxichoiceConsolidation

public ScreenedMaxichoiceConsolidation(Program screen,
                                       SelectionFunction<Rule> selection,
                                       Solver solver)

Creates a new screened maxi-choice consolidation operator with the given screen, selection function and a link to an answer set solver.

Parameters:

screen - the screen to be retained in this consolidation operation

selection - a selection function

solver - an asp-solver

Method Detail

consolidate

public Program consolidate(Program p)
                    throws SolverException

Calculates the screened consolidation !r of program p using a maxi-choice selection function s, i.e. p!r = s(p \bot r) where p \bot r is the set of remainder sets of p with screen r.

Parameters:

p - a program

Returns:

consolidation of program p

Throws:

SolverException

consolidate

public java.util.Collection<Rule> consolidate(java.util.Collection<Rule> p)

Description copied from interface: ConsolidationOperator

Returns a consolidation of set p, i.e. a consistent subset of p.

Specified by:

consolidate in interface ConsolidationOperator<Rule>

Parameters:

p - a belief base

Returns:

the consolidated belief base