/**
* {<S ==> M>, <M ==> P>} |- {<S ==> P>,
*
* <P ==>S>}
*
* @param term1 Subject of the first new task
* @param term2 Predicate of the first new task
* @param sentence The first premise
* @param belief The second premise
*/
static void dedExe(Term term1, Term term2, Sentence sentence, Judgment belief) {
if (RDFStatement.invalidStatement(term1, term2)) {
return;
}
TruthValue value1 = sentence.getTruth();
TruthValue value2 = belief.getTruth();
TruthValue truth1 = null;
TruthValue truth2 = null;
BudgetValue budget1, budget2;
if (sentence instanceof Question) {
budget1 = BudgetFunctions.backwardWeak(value2);
budget2 = BudgetFunctions.backwardWeak(value2);
} else {
if (sentence instanceof Goal) {
truth1 = TruthFunctions.desireWeak(value1, value2);
truth2 = TruthFunctions.desireWeak(value1, value2);
} else {
truth1 = TruthFunctions.deduction(value1, value2);
truth2 = TruthFunctions.exemplification(value1, value2);
}
budget1 = BudgetFunctions.forward(truth1);
budget2 = BudgetFunctions.forward(truth2);
}
TemporalValue order1 = sentence.getContent().getOrder();
TemporalValue order2 = belief.getContent().getOrder();
TemporalValue order = TemporalRules.syllogistic(order1, order2);
RDFStatement content1 =
RDFStatement.make((RDFStatement) sentence.getContent(), term1, term2, order);
RDFStatement content2 =
RDFStatement.make(
(RDFStatement) sentence.getContent(), term2, term1, TemporalValue.getReverse(order));
Memory.doublePremiseTask(budget1, content1, truth1);
Memory.doublePremiseTask(budget2, content2, truth2);
}
/**
* {<(&&, S1, S2, S3) ==> P>, S1} |- <(&&, S2, S3) ==> P> {<(&&, S2, S3) ==> P>, <S1 ==> S2>} |-
* <(&&, S1, S3) ==> P> {<(&&, S1, S3) ==> P>, <S1 ==> S2>} |- <(&&, S2, S3) ==> P>
*
* @param premise1 The conditional premise
* @param index The location of the shared term in the condition of premise1
* @param premise2 The premise which, or part of which, appears in the condition of premise1
* @param side The location of the shared term in premise2: 0 for subject, 1 for predicate, -1 for
* the whole term
*/
static void conditionalDedInd(Implication premise1, short index, Term premise2, int side) {
Task task = Memory.currentTask;
Sentence taskSentence = task.getSentence();
Judgment belief = Memory.currentBelief;
boolean deduction = (side != 0);
HashMap substitute =
Variable.findSubstitute(Variable.VarType.ALL, premise2, belief.getContent());
boolean conditionalTask = (substitute != null);
TemporalValue tense1 = (conditionalTask ? taskSentence.getTense() : belief.getTense());
TemporalValue tense2 = (conditionalTask ? belief.getTense() : taskSentence.getTense());
TemporalValue order1 = premise1.getOrder();
TemporalValue order2 = premise2.getOrder();
if ((side == -1) && (tense2 != null) && (tense2.getDelta() > 0)) {
return;
}
if ((side == 0) && (order2 != null) && (order2.getDelta() > 0)) {
return;
}
if ((side == 1) && (order2 != null) && (order2.getDelta() < 0)) {
return;
}
TemporalValue tense = TemporalRules.syllogistic(tense1, tense2);
if (tense != null) {
tense = new TemporalValue(0);
}
Term commonComponent;
Term newComponent = null;
if (side == 0) {
commonComponent = ((RDFStatement) premise2).getSubject();
newComponent = ((RDFStatement) premise2).getPredicate();
} else if (side == 1) {
commonComponent = ((RDFStatement) premise2).getPredicate();
newComponent = ((RDFStatement) premise2).getSubject();
} else {
commonComponent = premise2;
}
Conjunction oldCondition = (Conjunction) premise1.getSubject();
boolean match =
Variable.unify(
Variable.VarType.INDEPENDENT,
oldCondition.componentAt(index),
commonComponent,
premise1,
premise2);
if (!match && (commonComponent.getClass() == oldCondition.getClass())) {
match =
Variable.unify(
Variable.VarType.INDEPENDENT,
oldCondition.componentAt(index),
((CompoundTerm) commonComponent).componentAt(index),
premise1,
premise2);
}
if (!match) {
return;
}
Term newCondition;
if (oldCondition.equals(commonComponent)) {
newCondition = null;
} else {
newCondition = CompoundTerm.replaceComponent(oldCondition, index, newComponent);
if ((newCondition instanceof Conjunction) && ((CompoundTerm) newCondition).size() == 1) {
newCondition = ((CompoundTerm) newCondition).componentAt(0);
}
}
Term content;
if (newCondition != null) {
content = RDFStatement.make(premise1, newCondition, premise1.getPredicate(), order1);
} else {
content = premise1.getPredicate();
}
if (content == null) {
return;
}
TruthValue truth1 = taskSentence.getTruth();
TruthValue truth2 = belief.getTruth();
TruthValue truth = null;
BudgetValue budget;
if (taskSentence instanceof Question) {
budget = BudgetFunctions.backwardWeak(truth2);
} else {
if (taskSentence instanceof Goal) {
if (conditionalTask) {
truth = TruthFunctions.desireWeak(truth1, truth2);
} else if (deduction) {
truth = TruthFunctions.desireInd(truth1, truth2);
} else {
truth = TruthFunctions.desireDed(truth1, truth2);
}
budget = BudgetFunctions.forward(truth);
} else {
if (deduction) {
truth = TruthFunctions.deduction(truth1, truth2);
} else if (conditionalTask) {
truth = TruthFunctions.induction(truth2, truth1);
} else {
truth = TruthFunctions.induction(truth1, truth2);
}
}
budget = BudgetFunctions.forward(truth);
}
Memory.currentTense = tense;
Memory.doublePremiseTask(budget, content, truth);
}
/**
* {<<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);
}