/**
* {<M ==> S>, <M ==> P>} |- {<S ==> P>,
*
* <P ==>S>, <S <=> P>}
*
* @param term1 Subject of the first new task
* @param term2 Predicate of the first new task
* @param taskSentence The first premise
* @param belief The second premise
* @param figure Locations of the shared term in premises
*/
static void abdIndCom(
Term term1, Term term2, Sentence taskSentence, Judgment belief, int figure) {
if (RDFStatement.invalidStatement(term1, term2)) {
return;
}
RDFStatement st1 = (RDFStatement) taskSentence.getContent();
RDFStatement st2 = (RDFStatement) belief.getContent();
TruthValue truth1 = null;
TruthValue truth2 = null;
TruthValue truth3 = null;
BudgetValue budget1, budget2, budget3;
TruthValue value1 = taskSentence.getTruth();
TruthValue value2 = belief.getTruth();
if (taskSentence instanceof Question) {
budget1 = BudgetFunctions.backward(value2);
budget2 = BudgetFunctions.backwardWeak(value2);
budget3 = BudgetFunctions.backward(value2);
} else {
if (taskSentence instanceof Goal) {
truth1 = TruthFunctions.desireStrong(value1, value2);
truth2 = TruthFunctions.desireWeak(value2, value1);
truth3 = TruthFunctions.desireStrong(value1, value2);
} else {
truth1 = TruthFunctions.abduction(value1, value2);
truth2 = TruthFunctions.abduction(value2, value1);
truth3 = TruthFunctions.comparison(value1, value2);
}
budget1 = BudgetFunctions.forward(truth1);
budget2 = BudgetFunctions.forward(truth2);
budget3 = BudgetFunctions.forward(truth3);
}
TemporalValue order1 = st1.getOrder();
TemporalValue order2 = st2.getOrder();
TemporalValue order = TemporalRules.syllogistic(order1, order2, figure);
// if (tense == null) {
// tense = TemporalValue.WHEN;
// truth1 = TruthFunctions.temporalInduction(truth1);
// truth2 = TruthFunctions.temporalInduction(truth2);
// truth3 = TruthFunctions.temporalInduction(truth3);
// }
RDFStatement statement1, statement2, statement3;
statement1 = RDFStatement.make(st1, term1, term2, order);
statement2 = RDFStatement.make(st1, term2, term1, TemporalValue.getReverse(order));
statement3 = RDFStatement.makeSym(st1, term1, term2, order);
Memory.doublePremiseTask(budget1, statement1, truth1);
Memory.doublePremiseTask(budget2, statement2, truth2);
Memory.doublePremiseTask(budget3, statement3, truth3);
if (statement1.isConstant()) {
Memory.doublePremiseTask(budget1, introVarInd(belief, taskSentence, figure, true), truth1);
Memory.doublePremiseTask(budget2, introVarInd(taskSentence, belief, figure, true), truth2);
Memory.doublePremiseTask(budget3, introVarInd(taskSentence, belief, figure, false), truth3);
}
}
/**
* {<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);
}
/**
* {<(&&, S2, S3) ==> P>, <(&&, S1, S3) ==> P>} |- <S1 ==> S2>
*
* @param cond1 The condition of the first premise
* @param cond2 The condition of the second premise
* @param st1 The first premise
* @param st2 The second premise
* @return Whether there are derived tasks
*/
static boolean conditionalAbd(Term cond1, Term cond2, RDFStatement st1, RDFStatement st2) {
if (!(st1 instanceof Implication) || !(st2 instanceof Implication)) {
return false;
}
if (!(cond1 instanceof Conjunction) && !(cond2 instanceof Conjunction)) {
return false;
}
TemporalValue order1 = st1.getOrder();
TemporalValue order2 = st2.getOrder();
if (order1 != order2) {
return false;
}
Term term1 = null;
Term term2 = null;
if (cond1 instanceof Conjunction) {
term1 = CompoundTerm.reduceComponents((Conjunction) cond1, cond2);
}
if (cond2 instanceof Conjunction) {
term2 = CompoundTerm.reduceComponents((Conjunction) cond2, cond1);
}
if ((term1 == null) && (term2 == null)) {
return false;
}
Task task = Memory.currentTask;
Sentence sentence = task.getSentence();
Judgment belief = Memory.currentBelief;
TruthValue value1 = sentence.getTruth();
TruthValue value2 = belief.getTruth();
boolean keepOrder =
(Variable.findSubstitute(Variable.VarType.INDEPENDENT, st1, task.getContent()) != null);
Term content;
TruthValue truth = null;
BudgetValue budget;
if (term1 != null) {
if (term2 != null) {
content = RDFStatement.make(st2, term2, term1, order2);
} else {
content = term1;
}
if (sentence instanceof Question) {
budget = BudgetFunctions.backwardWeak(value2);
} else {
if (sentence instanceof Goal) {
if (keepOrder) {
truth = TruthFunctions.desireDed(value1, value2);
} else {
truth = TruthFunctions.desireInd(value1, value2);
}
} else {
truth = TruthFunctions.abduction(value2, value1);
}
budget = BudgetFunctions.forward(truth);
}
Memory.doublePremiseTask(budget, content, truth);
}
if (term2 != null) {
if (term1 != null) {
content = RDFStatement.make(st1, term1, term2, order1);
} else {
content = term2;
}
if (sentence instanceof Question) {
budget = BudgetFunctions.backwardWeak(value2);
} else {
if (sentence instanceof Goal) {
if (keepOrder) {
truth = TruthFunctions.desireDed(value1, value2);
} else {
truth = TruthFunctions.desireInd(value1, value2);
}
} else {
truth = TruthFunctions.abduction(value1, value2);
}
budget = BudgetFunctions.forward(truth);
}
Memory.currentTense = null;
Memory.doublePremiseTask(budget, content, truth);
}
return true;
}
/**
* {<<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);
}