net.sf.tweety.logics.pl.reasoner

Class AbstractPropositionalLogicReasoner

java.lang.Object

net.sf.tweety.logics.pl.reasoner.AbstractPropositionalLogicReasoner

All Implemented Interfaces:

KernelProvider<PropositionalFormula>, QualitativeReasoner<PlBeliefSet,PropositionalFormula>, Reasoner<java.lang.Boolean,PlBeliefSet,PropositionalFormula>

Direct Known Subclasses:

NaiveReasoner, SatReasoner

public abstract class AbstractPropositionalLogicReasoner
extends java.lang.Object
implements QualitativeReasoner<PlBeliefSet,PropositionalFormula>, KernelProvider<PropositionalFormula>

Abstract class for propositional logic reasoners.

Author:

Matthias Thimm

Constructor Summary

Constructors

Constructor and Description
AbstractPropositionalLogicReasoner()

Method Summary

Modifier and Type	Method and Description
java.util.Collection<java.util.Collection<PropositionalFormula>>	getKernels(java.util.Collection<PropositionalFormula> formulas, PropositionalFormula formula) Retrieves the set of kernels for the given formula from the given set of formulas.
boolean	isEquivalent(PropositionalFormula p1, PropositionalFormula p2) Checks whether the two formulas are equivalent
abstract java.lang.Boolean	query(PlBeliefSet beliefbase, PropositionalFormula formula) Queries the given belief base for the given formula.
boolean	query(PropositionalFormula formula, PropositionalFormula formula2) Checks whether the first formula entails the second.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPropositionalLogicReasoner

public AbstractPropositionalLogicReasoner()

Method Detail

query

public abstract java.lang.Boolean query(PlBeliefSet beliefbase,
                                        PropositionalFormula formula)

Description copied from interface: Reasoner

Queries the given belief base for the given formula.

Specified by:

query in interface QualitativeReasoner<PlBeliefSet,PropositionalFormula>

Specified by:

query in interface Reasoner<java.lang.Boolean,PlBeliefSet,PropositionalFormula>

Parameters:

beliefbase - a belief base

formula - a formula

Returns:

the answer to the query

query

public boolean query(PropositionalFormula formula,
                     PropositionalFormula formula2)

Checks whether the first formula entails the second.

Parameters:

formula - some formula

formula - a formula

Returns:

true if the second formula is entailed be the first formula.

isEquivalent

public boolean isEquivalent(PropositionalFormula p1,
                            PropositionalFormula p2)

Checks whether the two formulas are equivalent

Parameters:

p1 -

p2 -

Returns:

getKernels

public java.util.Collection<java.util.Collection<PropositionalFormula>> getKernels(java.util.Collection<PropositionalFormula> formulas,
                                                                                   PropositionalFormula formula)

Description copied from interface: KernelProvider

Retrieves the set of kernels for the given formula from the given set of formulas.

Specified by:

getKernels in interface KernelProvider<PropositionalFormula>

Parameters:

formulas - a set of formulas.

formula - a formula.

Returns:

the collection of kernels