Examples of FOLDomain

aima.core.logic.fol.domain.FOLDomain
@author Ravi Mohan @author Ciaran O'Reilly

Examples of aima.core.logic.fol.domain.FOLDomain

  // Note: see -
  // http://logic.stanford.edu/classes/cs157/2008/lectures/lecture15.pdf
  // slide 16,17, and 18 for where this test example was taken from.
  public static FOLKnowledgeBase createABCDEqualityAndSubstitutionKnowledgeBase(
      InferenceProcedure infp, boolean includeEqualityAxioms) {
    FOLDomain domain = new FOLDomain();
    domain.addConstant("A");
    domain.addConstant("B");
    domain.addConstant("C");
    domain.addConstant("D");
    domain.addPredicate("P");
    domain.addFunction("F");


    FOLKnowledgeBase kb = new FOLKnowledgeBase(domain, infp);


    kb.tell("F(A) = B");
    kb.tell("F(B) = A");

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Examples of aima.core.logic.fol.domain.FOLDomain

        result.toString());
  }


  @Test
  public void testAdditionalVariableMixtures() {
    FOLDomain domain = new FOLDomain();
    domain.addConstant("A");
    domain.addConstant("B");
    domain.addFunction("F");
    domain.addFunction("G");
    domain.addFunction("H");
    domain.addPredicate("P");


    FOLParser parser = new FOLParser(domain);


    // Test Cascade Substitutions handled correctly
    Sentence s1 = parser.parse("P(z, x)");

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Examples of aima.core.logic.fol.domain.FOLDomain

        result.toString());
  }


  @Test
  public void testTermEquality() {
    FOLDomain domain = new FOLDomain();
    domain.addConstant("A");
    domain.addConstant("B");
    domain.addFunction("Plus");


    FOLParser parser = new FOLParser(domain);


    TermEquality te1 = (TermEquality) parser.parse("x = x");
    TermEquality te2 = (TermEquality) parser.parse("x = x");

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Examples of aima.core.logic.fol.domain.FOLDomain

    Assert.assertNull(result);
  }


  @Test
  public void testNOTSentence() {
    FOLDomain domain = new FOLDomain();
    domain.addConstant("A");
    domain.addConstant("B");
    domain.addConstant("C");
    domain.addFunction("Plus");
    domain.addPredicate("P");


    FOLParser parser = new FOLParser(domain);


    Sentence s1 = parser.parse("NOT(P(A))");
    Sentence s2 = parser.parse("NOT(P(A))");

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Examples of aima.core.logic.fol.domain.FOLDomain

 */
public class CNFConverterTest {


  @Test
  public void testExamplePg295AIMA2e() {
    FOLDomain domain = DomainFactory.weaponsDomain();
    FOLParser parser = new FOLParser(domain);


    Sentence origSentence = parser
        .parse("FORALL x ((((American(x) AND Weapon(y)) AND Sells(x, y, z)) AND Hostile(z)) => Criminal(x))");

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Examples of aima.core.logic.fol.domain.FOLDomain

        cnf.toString());
  }


  @Test
  public void testExamplePg296AIMA2e() {
    FOLDomain domain = DomainFactory.lovesAnimalDomain();
    FOLParser parser = new FOLParser(domain);


    Sentence origSentence = parser
        .parse("FORALL x (FORALL y (Animal(y) => Loves(x, y)) => EXISTS y Loves(y, x))");

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Examples of aima.core.logic.fol.domain.FOLDomain

        cnf.toString());
  }


  @Test
  public void testExamplesPg299AIMA2e() {
    FOLDomain domain = DomainFactory.lovesAnimalDomain();
    FOLParser parser = new FOLParser(domain);


    // FOL A.
    Sentence origSentence = parser
        .parse("FORALL x (FORALL y (Animal(y) => Loves(x, y)) => EXISTS y Loves(y, x))");

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Examples of aima.core.logic.fol.domain.FOLDomain

    Assert.assertEquals("[~Kills(Curiosity,Tuna)]", cnf.toString());
  }


  @Test
  public void testNestedExistsAndOrs() {
    FOLDomain domain = new FOLDomain();
    domain.addPredicate("P");
    domain.addPredicate("R");
    domain.addPredicate("Q");


    FOLParser parser = new FOLParser(domain);


    Sentence origSentence = parser
        .parse("EXISTS w (FORALL x ( (EXISTS z (Q(w, z))) => (EXISTS y (NOT(P(x, y)) AND R(y))) ) )");

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Examples of aima.core.logic.fol.domain.FOLDomain

    Assert.assertEquals("[~Q(x4,w4,z4), ~R(x4,y4)]", cnf.toString());
  }


  @Test
  public void testImplicationsAndExtendedAndsOrs() {
    FOLDomain domain = new FOLDomain();
    domain.addPredicate("Cheat");
    domain.addPredicate("Extra");
    domain.addPredicate("Knows");
    domain.addPredicate("Diff");
    domain.addPredicate("F");
    domain.addPredicate("A");
    domain.addPredicate("Probation");
    domain.addPredicate("Award");


    FOLParser parser = new FOLParser(domain);
    CNFConverter cnfConv = new CNFConverter(parser);


    // cheat(x,y) => f(x,y)

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Examples of aima.core.logic.fol.domain.FOLDomain

        cnfDef5.toString());
  }


  @Test
  public void testNegationsAndNestedImplications() {
    FOLDomain domain = new FOLDomain();
    domain.addPredicate("P");
    domain.addPredicate("Q");
    domain.addPredicate("R");
    domain.addConstant("A");


    FOLParser parser = new FOLParser(domain);
    CNFConverter cnfConv = new CNFConverter(parser);


    // ~(((~p or ~q) => ~(p or q)) => r)

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