Package org.tweetyproject.logics.fol.reasoner

Class SimpleFolReasoner

java.lang.Object

org.tweetyproject.logics.fol.reasoner.FolReasoner

org.tweetyproject.logics.fol.reasoner.SimpleFolReasoner

All Implemented Interfaces:

QualitativeReasoner<FolBeliefSet,FolFormula>, Reasoner<Boolean,FolBeliefSet,FolFormula>

public class SimpleFolReasoner
extends FolReasoner

Uses a naive brute force search procedure for theorem proving.

Author:

Matthias Thimm

Field Summary

Fields inherited from class org.tweetyproject.logics.fol.reasoner.FolReasoner

defaultReasoner

Constructor Summary

Constructors

Constructor	Description
SimpleFolReasoner()	Default

Method Summary

Modifier and Type	Method	Description
boolean	equivalent(FolBeliefSet kb, FolFormula f1, FolFormula f2)	This method determines whether two formulas are equivalent wrt.
boolean	isInstalled()	Checks whether the underlying solver or reasoning mechanism used by this reasoner is installed and available for use.
Boolean	query(FolBeliefSet kb, FolFormula formula)	Queries the given belief base with the provided formula and returns a boolean result.

Methods inherited from class org.tweetyproject.logics.fol.reasoner.FolReasoner

getDefaultReasoner, setDefaultReasoner

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleFolReasoner

public SimpleFolReasoner()

Default

Method Details

query

public Boolean query(FolBeliefSet kb,
 FolFormula formula)

Description copied from interface: QualitativeReasoner

Queries the given belief base with the provided formula and returns a boolean result. The result indicates whether the formula is entailed or satisfied by the belief base according to the qualitative reasoning method implemented by the reasoner.

Specified by:

query in interface QualitativeReasoner<FolBeliefSet,FolFormula>

Specified by:

query in interface Reasoner<Boolean,FolBeliefSet,FolFormula>

Specified by:

query in class FolReasoner

Parameters:

kb - The belief base to be queried.

formula - The formula for which the query is made.

Returns:

`TRUE` if the formula is entailed or satisfied by the belief base, `FALSE` otherwise.

equivalent

public boolean equivalent(FolBeliefSet kb,
 FolFormula f1,
 FolFormula f2)

Description copied from class: FolReasoner

This method determines whether two formulas are equivalent wrt. to the given knowledge base.

Specified by:

equivalent in class FolReasoner

Parameters:

kb - the knowledge base

f1 - the first formula.

f2 - the second formula.

Returns:

the answer to the query.

isInstalled

public boolean isInstalled()

Description copied from interface: QualitativeReasoner

Checks whether the underlying solver or reasoning mechanism used by this reasoner is installed and available for use. This can be helpful when the reasoner depends on external tools or libraries for performing the reasoning tasks.

Returns:

`true` if the solver is installed and available, `false` otherwise.