Package net.sf.tweety.logics.fol.reasoner

Class Prover9FolReasoner

java.lang.Object

net.sf.tweety.logics.fol.reasoner.FolReasoner

net.sf.tweety.logics.fol.reasoner.Prover9FolReasoner

All Implemented Interfaces:

net.sf.tweety.commons.QualitativeReasoner<FolBeliefSet,FolFormula>, net.sf.tweety.commons.Reasoner<Boolean,FolBeliefSet,FolFormula>

public class Prover9FolReasoner
extends FolReasoner

Invokes Prover9 ( https://www.cs.unm.edu/~mccune/mace4/), an automated theorem prover for first-order logic, and returns its results.

Author:

Nils Geilen, Matthias Thimm

Field Summary

Fields inherited from class net.sf.tweety.logics.fol.reasoner.FolReasoner

defaultReasoner

Constructor Summary

Constructors

Constructor	Description
Prover9FolReasoner(String binaryLocation)	Constructs a new instance pointing to a specific Prover9
Prover9FolReasoner(String binaryLocation, net.sf.tweety.commons.util.Shell bash)	Constructs a new instance pointing to a specific Prover9.

Method Summary

Modifier and Type	Method	Description
boolean	equivalent(FolBeliefSet kb, FolFormula a, FolFormula b)	This method determines whether two formulas are equivalent wrt.
String	getBinaryLocation()	Returns the path of the Prover9 binaries.
Boolean	query(FolBeliefSet kb, FolFormula query)
void	setBinaryLocation(String binaryLocation)	Changes the path of the Prover9 binaries.

Methods inherited from class net.sf.tweety.logics.fol.reasoner.FolReasoner

getDefaultReasoner, setDefaultReasoner

Methods inherited from class java.lang.Object

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

Constructor Detail

Prover9FolReasoner

public Prover9FolReasoner(String binaryLocation,
                          net.sf.tweety.commons.util.Shell bash)

Constructs a new instance pointing to a specific Prover9.

Parameters:

binaryLocation - of the prover9 executable on the hard drive

bash - shell to run commands

Prover9FolReasoner

public Prover9FolReasoner(String binaryLocation)

Constructs a new instance pointing to a specific Prover9

Parameters:

binaryLocation - of the prover9 executable on the hard drive

Method Detail

query

public Boolean query(FolBeliefSet kb,
                     FolFormula query)

Specified by:

query in interface net.sf.tweety.commons.QualitativeReasoner<FolBeliefSet,FolFormula>

Specified by:

query in interface net.sf.tweety.commons.Reasoner<Boolean,FolBeliefSet,FolFormula>

Specified by:

query in class FolReasoner

equivalent

public boolean equivalent(FolBeliefSet kb,
                          FolFormula a,
                          FolFormula b)

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

a - the first formula.

b - the second formula.

Returns:

the answer to the query.

getBinaryLocation

public String getBinaryLocation()

Returns the path of the Prover9 binaries.

Returns:

binary location of Prover9

setBinaryLocation

public void setBinaryLocation(String binaryLocation)

Changes the path of the Prover9 binaries.

Parameters:

binaryLocation - the new path of the binary