/**
* {<M --> S>, <M --> P>} |- <<#x --> S> ==> <#x --> P>> {<M --> S>, <M --> P>} |- <<#x --> S> <=>
* <#x --> P>>
*
* @param sentence1 The first premise <M --> S>
* @param sentence2 The second premise <M --> P>
* @param figure The figure indicating the location of the shared term
* @param isImplication The conclusion is Implication, not Equivalence
*/
private static RDFStatement introVarInd(
Sentence sentence1, Sentence sentence2, int figure, boolean isImplication) {
RDFStatement premise1 = (RDFStatement) sentence1.getContent();
RDFStatement premise2 = (RDFStatement) sentence2.getContent();
RDFStatement state1, state2;
Variable v1 = new Variable(Symbols.VARIABLE_TAG + "0");
Variable v2 = new Variable(Symbols.VARIABLE_TAG + "0");
if (figure == 11) {
state1 = RDFStatement.make(premise1, v1, premise1.getPredicate());
state2 = RDFStatement.make(premise2, v2, premise2.getPredicate());
} else {
state1 = RDFStatement.make(premise1, premise1.getSubject(), v1);
state2 = RDFStatement.make(premise2, premise2.getSubject(), v2);
}
TemporalValue tense1 = sentence1.getTense();
TemporalValue tense2 = sentence2.getTense();
TemporalValue tense = TemporalRules.tenseInduction(tense1, tense2);
if (tense == null) {
return null;
}
RDFStatement content;
if (isImplication) {
content = Implication.make(state1, state2, tense);
} else {
content = Equivalence.make(state1, state2, tense);
}
return content;
}
/**
* {<M --> S>, <C ==> <M --> P>>} |- <(&&, <#x --> S>, C) ==> <#x --> P>> {<M --> S>, (&&, C, <M
* --> P>)} |- (&&, C, <<#x --> S> ==> <#x --> P>>)
*
* @param premise1 The first premise directly used in internal induction, <M --> S>
* @param premise2 The component to be used as a premise in internal induction, <M --> P>
* @param oldCompound The whole content of the first premise, Implication or Conjunction
*/
static void introVarIndInner(
RDFStatement premise1, RDFStatement premise2, CompoundTerm oldCompound) {
Task task = Memory.currentTask;
Sentence taskSentence = task.getSentence();
if (!taskSentence.isJudgment()) {
return;
}
if (premise1.getClass() != premise2.getClass()) {
return;
}
Variable var1 = new Variable(Symbols.VARIABLE_TAG + "0");
Variable var2 = new Variable(Symbols.VARIABLE_TAG + "0");
RDFStatement state1, state2;
if (premise1.getSubject().equals(premise2.getSubject())) {
state1 = RDFStatement.make(premise1, var1, premise1.getPredicate());
state2 = RDFStatement.make(premise2, var2, premise2.getPredicate());
} else if (premise1.getPredicate().equals(premise2.getPredicate())) {
state1 = RDFStatement.make(premise1, premise1.getSubject(), var1);
state2 = RDFStatement.make(premise2, premise2.getSubject(), var2);
} else {
return;
}
Sentence belief = Memory.currentBelief;
Term compound, content;
TemporalValue tense;
TruthValue truth;
if (premise1.equals(taskSentence.getContent())) {
truth = TruthFunctions.abduction(taskSentence.getTruth(), belief.getTruth());
tense = TemporalRules.tenseInduction(taskSentence.getTense(), belief.getTense());
} else {
truth = TruthFunctions.abduction(belief.getTruth(), taskSentence.getTruth());
tense = TemporalRules.tenseInduction(belief.getTense(), taskSentence.getTense());
}
if (tense == null) {
return;
}
if ((oldCompound instanceof Implication) && (tense == oldCompound.getOrder())) {
compound = RDFStatement.make((RDFStatement) oldCompound, oldCompound.componentAt(0), state2);
content = RDFStatement.make((RDFStatement) oldCompound, state1, compound);
} else if (oldCompound instanceof Conjunction) {
compound = Implication.make(state1, state2, tense);
content = CompoundTerm.replaceComponent(oldCompound, premise2, compound);
} else {
return;
}
BudgetValue budget = BudgetFunctions.forward(truth);
Memory.doublePremiseTask(budget, content, truth);
}
/**
* {<M ==> S>, <M ==> P>} |- {<S ==> P>,
*
* <P ==>S>, <S <=> P>}
*
* @param task1 The first premise
* @param task2 The second premise
* @param order Temporal order of the terms in conclusion
*/
public static void temporalIndCom(Task task1, Task task2, TemporalValue order) {
Judgment judg1 = (Judgment) task1.getSentence();
Judgment judg2 = (Judgment) task2.getSentence();
Stamp stamp = Stamp.make(judg1.getStamp(), judg2.getStamp());
if (stamp == null) {
return;
}
Memory.currentStamp = stamp;
Term term1 = judg1.getContent();
Term term2 = judg2.getContent();
if ((term1 instanceof Inheritance) && (term2 instanceof Inheritance)) {
RDFStatement s1 = (RDFStatement) term1;
RDFStatement s2 = (RDFStatement) term2;
Variable var1 = new Variable(Symbols.VARIABLE_TAG + "0");
Variable var2 = new Variable(Symbols.VARIABLE_TAG + "0");
if (s1.getSubject().equals(s2.getSubject())) {
term1 = RDFStatement.make(s1, var1, s1.getPredicate());
term2 = RDFStatement.make(s2, var2, s2.getPredicate());
} else if (s1.getPredicate().equals(s2.getPredicate())) {
term1 = RDFStatement.make(s1, s1.getSubject(), var1);
term2 = RDFStatement.make(s2, s2.getSubject(), var2);
}
} else { // to generalize
Term condition;
if ((term1 instanceof Implication) && (term2 instanceof Inheritance)) {
condition = ((Implication) term1).getSubject();
if (condition.equals(term2)) {
return;
}
if ((condition instanceof Conjunction)
&& ((Conjunction) condition).containComponent(term2)) {
return;
}
} else if ((term1 instanceof Inheritance) && (term2 instanceof Implication)) {
condition = ((Implication) term2).getSubject();
if (condition.equals(term1)) {
return;
}
if ((condition instanceof Conjunction)
&& ((Conjunction) condition).containComponent(term1)) {
return;
}
}
}
RDFStatement statement1 = Implication.make(term1, term2, order);
RDFStatement statement2 = Implication.make(term2, term1, TemporalValue.getReverse(order));
RDFStatement statement3 = Equivalence.make(term1, term2, order);
TruthValue value1 = judg1.getTruth();
TruthValue value2 = judg2.getTruth();
TruthValue truth1 = TruthFunctions.induction(value1, value2);
TruthValue truth2 = TruthFunctions.induction(value2, value1);
TruthValue truth3 = TruthFunctions.comparison(value1, value2);
BudgetValue budget1 =
BudgetFunctions.temporalIndCom(task1.getBudget(), task2.getBudget(), truth1);
BudgetValue budget2 =
BudgetFunctions.temporalIndCom(task1.getBudget(), task2.getBudget(), truth2);
BudgetValue budget3 =
BudgetFunctions.temporalIndCom(task1.getBudget(), task2.getBudget(), truth3);
Memory.currentTense = new TemporalValue(0);
Memory.doublePremiseTask(budget1, statement1, truth1);
Memory.doublePremiseTask(budget2, statement2, truth2);
Memory.doublePremiseTask(budget3, statement3, truth3);
}
/**
* {<<M --> S> ==> <M --> P>>, <M --> S>} |- <M --> P> {<<M --> S> ==> <M --> P>>, <M --> P>} |-
* <M --> S>
*
* @param mainSentence The implication/equivalence premise
* @param subSentence The premise on part of s1
* @param s The location of s2 in s1
*/
static void detachment(Sentence mainSentence, Sentence subSentence, int s) {
RDFStatement statement = (RDFStatement) mainSentence.getContent();
Term subject = statement.getSubject();
Term predicate = statement.getPredicate();
Term term = subSentence.getContent();
Term content;
int side;
if (term.equals(subject)) {
side = 0;
content = predicate;
} else if (term.equals(predicate)) {
side = 1;
content = subject;
} else {
return;
}
if ((content instanceof RDFStatement) && ((RDFStatement) content).invalid()) {
return;
}
Sentence taskSentence = Memory.currentTask.getSentence();
Sentence beliefSentence = Memory.currentBelief;
TruthValue beliefTruth = beliefSentence.getTruth();
TruthValue truth1 = mainSentence.getTruth();
TruthValue truth2 = subSentence.getTruth();
TruthValue truth = null;
BudgetValue budget;
if (taskSentence instanceof Question) {
if (statement instanceof Equivalence) {
budget = BudgetFunctions.backward(beliefTruth);
} else if (side == 0) {
budget = BudgetFunctions.backwardWeak(beliefTruth);
} else {
budget = BudgetFunctions.backward(beliefTruth);
}
} else {
if (taskSentence instanceof Goal) {
if (statement instanceof Equivalence) {
truth = TruthFunctions.desireStrong(truth1, truth2);
} else if (side == 0) {
truth = TruthFunctions.desireInd(truth1, truth2);
} else {
truth = TruthFunctions.desireDed(truth1, truth2);
}
} else {
if (statement instanceof Equivalence) {
truth = TruthFunctions.analogy(truth1, truth2);
} else if (side == 0) {
truth = TruthFunctions.deduction(truth1, truth2);
} else {
truth = TruthFunctions.abduction(truth2, truth1);
}
}
budget = BudgetFunctions.forward(truth);
}
TemporalValue tense0 = subSentence.getTense();
TemporalValue order0 = statement.getOrder();
TemporalValue tense;
if (order0 == null) {
tense = tense0;
} else if (side == 0) {
tense = TemporalRules.tenseSyllogistic(tense0, subSentence.getCreationTime(), order0);
} else {
tense =
TemporalRules.tenseSyllogistic(
tense0, subSentence.getCreationTime(), TemporalValue.getReverse(order0));
}
Memory.currentTense = tense;
Memory.doublePremiseTask(budget, content, truth);
}