Examples with DifferenceExt nars.language.DifferenceExt used on opensource projects

Example 1 with DifferenceExt

use of nars.language.DifferenceExt in project opennars by opennars.

the class CompositionalRules method decomposeCompound.

/**
 * {<(S|P) ==> M>, <P ==> M>} |- <S ==> M>
 *
 * @param implication The implication term to be decomposed
 * @param componentCommon The part of the implication to be removed
 * @param term1 The other term in the contentInd
 * @param index The location of the shared term: 0 for subject, 1 for
 * predicate
 * @param compoundTask Whether the implication comes from the task
 * @param nal Reference to the memory
 */
private static void decomposeCompound(CompoundTerm compound, Term component, Term term1, int index, boolean compoundTask, int order, DerivationContext nal) {
    if ((compound instanceof Statement) || (compound instanceof ImageExt) || (compound instanceof ImageInt)) {
        return;
    }
    Term term2 = reduceComponents(compound, component, nal.mem());
    if (term2 == null) {
        return;
    }
    long delta = 0;
    while ((term2 instanceof Conjunction) && (((CompoundTerm) term2).term[0] instanceof Interval)) {
        Interval interval = (Interval) ((CompoundTerm) term2).term[0];
        delta += interval.time;
        term2 = ((CompoundTerm) term2).setComponent(0, null, nal.mem());
    }
    Task task = nal.getCurrentTask();
    Sentence sentence = task.sentence;
    Sentence belief = nal.getCurrentBelief();
    Statement oldContent = (Statement) task.getTerm();
    TruthValue v1, v2;
    if (compoundTask) {
        v1 = sentence.truth;
        v2 = belief.truth;
    } else {
        v1 = belief.truth;
        v2 = sentence.truth;
    }
    TruthValue truth = null;
    Term content;
    if (index == 0) {
        content = Statement.make(oldContent, term1, term2, order);
        if (content == null) {
            return;
        }
        if (oldContent instanceof Inheritance) {
            if (compound instanceof IntersectionExt) {
                truth = reduceConjunction(v1, v2);
            } else if (compound instanceof IntersectionInt) {
                truth = reduceDisjunction(v1, v2);
            } else if ((compound instanceof SetInt) && (component instanceof SetInt)) {
                truth = reduceConjunction(v1, v2);
            } else if ((compound instanceof SetExt) && (component instanceof SetExt)) {
                truth = reduceDisjunction(v1, v2);
            } else if (compound instanceof DifferenceExt) {
                if (compound.term[0].equals(component)) {
                    truth = reduceDisjunction(v2, v1);
                } else {
                    truth = reduceConjunctionNeg(v1, v2);
                }
            }
        } else if (oldContent instanceof Implication) {
            if (compound instanceof Conjunction) {
                truth = reduceConjunction(v1, v2);
            } else if (compound instanceof Disjunction) {
                truth = reduceDisjunction(v1, v2);
            }
        }
    } else {
        content = Statement.make(oldContent, term2, term1, order);
        if (content == null) {
            return;
        }
        if (oldContent instanceof Inheritance) {
            if (compound instanceof IntersectionInt) {
                truth = reduceConjunction(v1, v2);
            } else if (compound instanceof IntersectionExt) {
                truth = reduceDisjunction(v1, v2);
            } else if ((compound instanceof SetExt) && (component instanceof SetExt)) {
                truth = reduceConjunction(v1, v2);
            } else if ((compound instanceof SetInt) && (component instanceof SetInt)) {
                truth = reduceDisjunction(v1, v2);
            } else if (compound instanceof DifferenceInt) {
                if (compound.term[1].equals(component)) {
                    truth = reduceDisjunction(v2, v1);
                } else {
                    truth = reduceConjunctionNeg(v1, v2);
                }
            }
        } else if (oldContent instanceof Implication) {
            if (compound instanceof Disjunction) {
                truth = reduceConjunction(v1, v2);
            } else if (compound instanceof Conjunction) {
                truth = reduceDisjunction(v1, v2);
            }
        }
    }
    if (truth != null) {
        BudgetValue budget = BudgetFunctions.compoundForward(truth, content, nal);
        if (delta != 0) {
            long baseTime = task.sentence.getOccurenceTime();
            if (baseTime != Stamp.ETERNAL) {
                baseTime += delta;
                nal.getTheNewStamp().setOccurrenceTime(baseTime);
            }
        }
        // (allow overlap), a form of detachment
        nal.doublePremiseTask(content, truth, budget, false, true);
    }
}

Example 2 with DifferenceExt

use of nars.language.DifferenceExt in project opennars by opennars.

the class StructuralRules method structuralCompose1.

/**
 * {<S --> P>, P@(P|Q)} |- <S --> (P|Q)>
 *
 * @param compound The compound term
 * @param index The location of the indicated term in the compound
 * @param statement The premise
 * @param nal Reference to the memory
 */
static void structuralCompose1(CompoundTerm compound, short index, Statement statement, DerivationContext nal) {
    if (!nal.getCurrentTask().sentence.isJudgment()) {
        // forward inference only
        return;
    }
    Term component = compound.term[index];
    Task task = nal.getCurrentTask();
    Sentence sentence = task.sentence;
    int order = sentence.getTemporalOrder();
    TruthValue truth = sentence.truth;
    final float reliance = Parameters.reliance;
    TruthValue truthDed = TruthFunctions.deduction(truth, reliance);
    TruthValue truthNDed = TruthFunctions.negation(TruthFunctions.deduction(truth, reliance));
    Term subj = statement.getSubject();
    Term pred = statement.getPredicate();
    if (component.equals(subj)) {
        if (compound instanceof IntersectionExt) {
            structuralStatement(compound, pred, order, truthDed, nal);
        } else if (compound instanceof IntersectionInt) {
        } else if ((compound instanceof DifferenceExt) && (index == 0)) {
            structuralStatement(compound, pred, order, truthDed, nal);
        } else if (compound instanceof DifferenceInt) {
            if (index == 0) {
            } else {
                structuralStatement(compound, pred, order, truthNDed, nal);
            }
        }
    } else if (component.equals(pred)) {
        if (compound instanceof IntersectionExt) {
        } else if (compound instanceof IntersectionInt) {
            structuralStatement(subj, compound, order, truthDed, nal);
        } else if (compound instanceof DifferenceExt) {
            if (index == 0) {
            } else {
                structuralStatement(subj, compound, order, truthNDed, nal);
            }
        } else if ((compound instanceof DifferenceInt) && (index == 0)) {
            structuralStatement(subj, compound, order, truthDed, nal);
        }
    }
}

Example 3 with DifferenceExt

use of nars.language.DifferenceExt in project opennars by opennars.

the class StructuralRules method structuralDecompose1.

/**
 * {<(S|T) --> P>, S@(S|T)} |- <S --> P> {<S --> (P&T)>, P@(P&T)} |- <S --> P>
 *
 * @param compound The compound term
 * @param index The location of the indicated term in the compound
 * @param statement The premise
 * @param nal Reference to the memory
 */
static void structuralDecompose1(CompoundTerm compound, short index, Statement statement, DerivationContext nal) {
    if (index >= compound.term.length) {
        return;
    }
    Term component = compound.term[index];
    Task task = nal.getCurrentTask();
    Sentence sentence = task.sentence;
    int order = sentence.getTemporalOrder();
    TruthValue truth = sentence.truth;
    if (truth == null) {
        return;
    }
    final float reliance = Parameters.reliance;
    TruthValue truthDed = TruthFunctions.deduction(truth, reliance);
    TruthValue truthNDed = TruthFunctions.negation(TruthFunctions.deduction(truth, reliance));
    Term subj = statement.getSubject();
    Term pred = statement.getPredicate();
    if (compound.equals(subj)) {
        if (compound instanceof IntersectionInt) {
            structuralStatement(component, pred, order, truthDed, nal);
        } else if ((compound instanceof SetExt) && (compound.size() > 1)) {
            Term[] t1 = new Term[] { component };
            structuralStatement(new SetExt(t1), pred, order, truthDed, nal);
        } else if (compound instanceof DifferenceInt) {
            if (index == 0) {
                structuralStatement(component, pred, order, truthDed, nal);
            } else {
                structuralStatement(component, pred, order, truthNDed, nal);
            }
        }
    } else if (compound.equals(pred)) {
        if (compound instanceof IntersectionExt) {
            structuralStatement(subj, component, order, truthDed, nal);
        } else if ((compound instanceof SetInt) && (compound.size() > 1)) {
            structuralStatement(subj, new SetInt(component), order, truthDed, nal);
        } else if (compound instanceof DifferenceExt) {
            if (index == 0) {
                structuralStatement(subj, component, order, truthDed, nal);
            } else {
                structuralStatement(subj, component, order, truthNDed, nal);
            }
        }
    }
}