Package stanfordlogic.prover

Examples of stanfordlogic.prover.Substitution

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     */
    public void testBasicMgu()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
       
        l1 = parser_.parse("foo baz bar");
        l2 = parser_.parse("foo baz bar");
        f1 = VariableFact.fromList(l1);
        f2 = GroundFact.fromList(l2);
       
        sigma = Unifier.mgu(f1, f2);
        assertNotNull(sigma);
        assertEquals(0, sigma.numMappings());
       
       
        l1 = parser_.parse("foo ?x bar");
        l2 = parser_.parse("foo baz bar");
        f1 = VariableFact.fromList(l1);
        f2 = GroundFact.fromList(l2);
       
        sigma = Unifier.mgu( f1, f2 );
        assertNotNull(sigma);
        assertEquals( f2.getTerm( 0 ),
                sigma.getMapping( (TermVariable) f1.getTerm( 0 ) ) );
        assertEquals(1, sigma.numMappings());
       
       
        l1 = parser_.parse("foo ?x ?x");
        l2 = parser_.parse("foo baz ?y");
        f1 = VariableFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
       
        sigma = Unifier.mgu(f1,f2);
        assertNotNull(sigma);
        assertEquals( f2.getTerm(0), sigma.getMapping( (TermVariable) f1.getTerm(0)) );
        assertEquals( f2.getTerm(0), sigma.getMapping( (TermVariable) f1.getTerm(1)) );
        assertEquals( f2.getTerm(0), sigma.getMapping( (TermVariable) f2.getTerm(1)) );
        assertEquals(2, sigma.numMappings());
    }
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    public void testFunctionMgu()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo (f a b)");
        l2 = parser_.parse("foo ?x");
        f1 = GroundFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
       
        sigma = Unifier.mgu(f1, f2);
        assertNotNull(sigma);
        assertEquals( f1.getTerm(0), sigma.getMapping( (TermVariable) f2.getTerm(0)) );
        assertEquals(1, sigma.numMappings());
    }
View Full Code Here
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    public void testBadMgu()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        // Now try one that will fail
        l1 = parser_.parse("foo ?x ?x");
        l2 = parser_.parse("foo bar baz");
        f1 = VariableFact.fromList(l1);
View Full Code Here
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    public void testDifferentFunctions()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x ?x");
        l2 = parser_.parse("toto bar baz");
        f1 = VariableFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
View Full Code Here
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    public void testDifferentArity()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x ?y");
        l2 = parser_.parse("foo ?x ?y bar");
        f1 = VariableFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
View Full Code Here
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    public void testIdenticalFunction()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x");
        l2 = parser_.parse("foo ?x");
        f1 = VariableFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
View Full Code Here
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    public void testIdenticalVariables()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x ?x");
        l2 = parser_.parse("foo ?x ?x");
        f1 = VariableFact.fromList(l1);
        f2 = (VariableFact) VariableFact.fromList(l2).uniquefy();
       
        sigma = Unifier.mgu(f1,f2);
        assertNotNull(sigma);
        assertEquals(1, sigma.numMappings());
    }
View Full Code Here
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    public void testIdenticalVariableNames()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x ?y");
        l2 = parser_.parse("foo ?y ?y");
        f1 = VariableFact.fromList(l1);
        f2 = (VariableFact) VariableFact.fromList(l2).uniquefy();
       
        sigma = Unifier.mgu(f1,f2);
        assertNotNull(sigma);
        assertEquals(2, sigma.numMappings());
    }
View Full Code Here
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    public void testRecursiveSub()
    {
        GdlList l1, l2;
        Fact f1, f2;
        Substitution sigma;
       
        l1 = parser_.parse("foo ?x ?x ?z");
        l2 = parser_.parse("foo  a ?y ?y");
        f1 = VariableFact.fromList(l1);
        f2 = VariableFact.fromList(l2);
       
        sigma = Unifier.mgu(f1,f2);
        assertNotNull(sigma);
        assertTrue(sigma.numMappings() == 3);
    }
View Full Code Here
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        parser_ = GameManager.getParser();
    }

    public void testSubstitution()
    {
        Substitution s = new Substitution();
       
        TermVariable v1 = TermVariable.makeTermVariable();
        TermVariable v2 = TermVariable.makeTermVariable();
        TermObject t = TermObject.makeTermObject(256);
       
        s.addMapping( v1, v2 );
        s.addMapping( v2, t );
       
        assertEquals(2, s.numMappings() );
        assertEquals(t, s.getMapping(v1) );
        assertEquals(t, s.getMapping(v2) );
    }
View Full Code Here
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Related Classes of stanfordlogic.prover.Substitution

  • stanfordlogic.knowledge.BasicKB
  • stanfordlogic.prover.BasicReasoner
  • stanfordlogic.test.prover.TestSubstitution
  • stanfordlogic.test.prover.TestUnifier
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