Class EFOLReasoner

java.lang.Object
org.tweetyproject.logics.fol.reasoner.FolReasoner
org.tweetyproject.logics.fol.reasoner.EFOLReasoner
All Implemented Interfaces:
QualitativeReasoner<FolBeliefSet,FolFormula>, Reasoner<Boolean,FolBeliefSet,FolFormula>
public class EFOLReasoner extends FolReasoner
Invokes E (http://eprover.org), an automated theorem prover for first-order logic, and returns its results.
Author:
Bastian Wolf, Nils Geilen, Matthias Thimm

  • Constructor Details

    • EFOLReasoner

      public EFOLReasoner(String binaryLocation, Shell bash)
      Constructs a new instance pointing to a specific EProver.
      Parameters:
      binaryLocation - location of the EProver executable on the hard drive
      bash - shell to run commands

    • EFOLReasoner

      public EFOLReasoner(String binaryLocation)
      Constructs a new instance pointing to a specific EProver.
      Parameters:
      binaryLocation - location of the Eprover executable on the hard drive

  • Method Details

    • setAdditionalArguments

      public void setAdditionalArguments(String s)
      Sets the additional arguments given to the call of the EProver binary (Default value is "--auto-schedule").
      Parameters:
      s - some string

    • getAdditionalArguments

      public String getAdditionalArguments()
      Returns the additional arguments given to the call of the EProver binary (Default value is "--auto-schedule").
      Returns:
      the additional arguments

    • query

      public Boolean query(FolBeliefSet kb, FolFormula query)
      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.
      query - 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 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()
      Return the path of the EProver binary
      Returns:
      the path of the EProver binary

    • setBinaryLocation

      public void setBinaryLocation(String binaryLocation)
      Changes the path of the EProver binary.
      Parameters:
      binaryLocation - the new path of the EProver binary

    • 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.