/**
* Inference between a compound term and a statement
*
* @param compound The compound term
* @param index The location of the current term in the compound
* @param statement The statement
* @param side The location of the current term in the statement
* @param beliefTerm The content of the belief
* @param memory Reference to the memory
*/
private static void compoundAndStatement(
CompoundTerm compound,
short index,
Statement statement,
short side,
Term beliefTerm,
Memory memory) {
Term component = compound.componentAt(index);
Task task = memory.currentTask;
if (component.getClass() == statement.getClass()) {
if ((compound instanceof Conjunction) && (memory.currentBelief != null)) {
if (Variable.unify(Symbols.VAR_DEPENDENT, component, statement, compound, statement)) {
SyllogisticRules.elimiVarDep(compound, component, statement.equals(beliefTerm), memory);
} else if (task.getSentence().isJudgment()) {
CompositionalRules.introVarInner(statement, (Statement) component, compound, memory);
}
}
} else {
if (!task.isStructural() && task.getSentence().isJudgment()) {
if (statement instanceof Inheritance) {
StructuralRules.structuralCompose1(compound, index, statement, memory);
// if (!(compound instanceof SetExt) && !(compound instanceof SetInt))
// {
if (!(compound instanceof SetExt
|| compound instanceof SetInt
|| compound instanceof Negation)) {
StructuralRules.structuralCompose2(compound, index, statement, side, memory);
} // {A --> B, A @ (A&C)} |- (A&C) --> (B&C)
} else if ((statement instanceof Similarity) && !(compound instanceof Conjunction)) {
StructuralRules.structuralCompose2(compound, index, statement, side, memory);
} // {A <-> B, A @ (A&C)} |- (A&C) <-> (B&C)
}
}
}
/**
* Inference between a compound term and a component of it
*
* @param compound The compound term
* @param component The component term
* @param compoundTask Whether the compound comes from the task
* @param memory Reference to the memory
*/
private static void compoundAndSelf(
CompoundTerm compound, Term component, boolean compoundTask, Memory memory) {
if ((compound instanceof Conjunction) || (compound instanceof Disjunction)) {
if (memory.currentBelief != null) {
CompositionalRules.decomposeStatement(compound, component, compoundTask, memory);
} else if (compound.containComponent(component)) {
StructuralRules.structuralCompound(compound, component, compoundTask, memory);
}
} else if ((compound instanceof Negation) && !memory.currentTask.isStructural()) {
if (compoundTask) {
StructuralRules.transformNegation(((Negation) compound).componentAt(0), memory);
} else {
StructuralRules.transformNegation(compound, memory);
}
}
}
/**
* The detachment rule, with variable unification
*
* @param originalMainSentence The premise that is an Implication or Equivalence
* @param subSentence The premise that is the subject or predicate of the first one
* @param index The location of the second premise in the first
* @param memory Reference to the memory
*/
private static void detachmentWithVar(
Sentence originalMainSentence, Sentence subSentence, int index, Memory memory) {
Sentence mainSentence = (Sentence) originalMainSentence.clone(); // for substitution
Statement statement = (Statement) mainSentence.getContent();
Term component = statement.componentAt(index);
Term content = subSentence.getContent();
if ((component instanceof Inheritance) && (memory.currentBelief != null)) {
if (component.isConstant()) {
SyllogisticRules.detachment(mainSentence, subSentence, index, memory);
} else if (Variable.unify(Symbols.VAR_INDEPENDENT, component, content, statement, content)) {
SyllogisticRules.detachment(mainSentence, subSentence, index, memory);
} else if ((statement instanceof Implication)
&& (statement.getPredicate() instanceof Statement)
&& (memory.currentTask.getSentence().isJudgment())) {
Statement s2 = (Statement) statement.getPredicate();
if (s2.getSubject().equals(((Statement) content).getSubject())) {
CompositionalRules.introVarInner((Statement) content, s2, statement, memory);
}
}
}
}
/**
* Syllogistic rules whose both premises are on the same asymmetric relation
*
* @param sentence The taskSentence in the task
* @param belief The judgment in the belief
* @param figure The location of the shared term
* @param memory Reference to the memory
*/
private static void asymmetricAsymmetric(
Sentence sentence, Sentence belief, int figure, Memory memory) {
Statement s1 = (Statement) sentence.cloneContent();
Statement s2 = (Statement) belief.cloneContent();
Term t1, t2;
switch (figure) {
case 11: // induction
if (Variable.unify(Symbols.VAR_INDEPENDENT, s1.getSubject(), s2.getSubject(), s1, s2)) {
if (s1.equals(s2)) {
return;
}
t1 = s2.getPredicate();
t2 = s1.getPredicate();
SyllogisticRules.abdIndCom(t1, t2, sentence, belief, figure, memory);
CompositionalRules.composeCompound(s1, s2, 0, memory);
}
break;
case 12: // deduction
if (Variable.unify(Symbols.VAR_INDEPENDENT, s1.getSubject(), s2.getPredicate(), s1, s2)) {
if (s1.equals(s2)) {
return;
}
t1 = s2.getSubject();
t2 = s1.getPredicate();
if (Variable.unify(Symbols.VAR_QUERY, t1, t2, s1, s2)) {
LocalRules.matchReverse(memory);
} else {
SyllogisticRules.dedExe(t1, t2, sentence, belief, memory);
}
}
break;
case 21: // exemplification
if (Variable.unify(Symbols.VAR_INDEPENDENT, s1.getPredicate(), s2.getSubject(), s1, s2)) {
if (s1.equals(s2)) {
return;
}
t1 = s1.getSubject();
t2 = s2.getPredicate();
if (Variable.unify(Symbols.VAR_QUERY, t1, t2, s1, s2)) {
LocalRules.matchReverse(memory);
} else {
SyllogisticRules.dedExe(t1, t2, sentence, belief, memory);
}
}
break;
case 22: // abduction
if (Variable.unify(Symbols.VAR_INDEPENDENT, s1.getPredicate(), s2.getPredicate(), s1, s2)) {
if (s1.equals(s2)) {
return;
}
t1 = s1.getSubject();
t2 = s2.getSubject();
if (!SyllogisticRules.conditionalAbd(
t1, t2, s1, s2, memory)) { // if conditional abduction, skip the following
SyllogisticRules.abdIndCom(t1, t2, sentence, belief, figure, memory);
CompositionalRules.composeCompound(s1, s2, 1, memory);
}
}
break;
default:
}
}
