Examples with Task nars.entity.Task used on opensource projects

Example 26 with Task

use of nars.entity.Task in project opennars by opennars.

the class SpiralLayout method vertex.

@Override
public void vertex(AbstractGraphVis<Item, Object> g, VertexVis<Item, Object> v) {
    Item vertex = v.getVertex();
    float priority = vertex.getPriority();
    boolean task = false;
    Concept x = null;
    if (vertex instanceof Concept) {
        x = (Concept) vertex;
    } else if (vertex instanceof Task) {
        task = true;
        x = nar.memory.concept(((Task) vertex).getTerm());
    }
    int i = 0;
    try {
        for (Concept c : nar.memory.concepts) {
            if (x == c) {
                // not elegant and fast but k at least no term equals
                break;
            }
            i++;
        }
    } catch (Exception ex) {
    }
    float count_elems = nar.memory.concepts.size();
    // float ratio = 30.0f*(0.10f + (((float)priority) / (1.0f)));
    float ratio = 30.0f * (0.10f + (((float) i) / (count_elems)));
    v.tx = (float) (ratio * Math.cos(ratio)) * spacing;
    v.ty = (float) (ratio * Math.sin(ratio)) * spacing;
    if (task) {
        v.ty += spacing * Video.hashFloat(vertex.hashCode());
    }
}

Example 27 with Task

use of nars.entity.Task in project opennars by opennars.

the class CompositionalRules method introVarInner.

/**
 * {<M --> S>, <C ==> <M --> P>>} |- <(&&, <#x --> S>, C) ==> <#x --> P>>
 * {<M --> S>, (&&, C, <M --> P>)} |- (&&, C, <<#x --> S> ==> <#x --> P>>)
 *
 * @param taskContent The first premise directly used in internal induction,
 * <M --> S>
 * @param beliefContent The componentCommon to be used as a premise in
 * internal induction, <M --> P>
 * @param oldCompound The whole contentInd of the first premise, Implication
 * or Conjunction
 * @param nal Reference to the memory
 */
static boolean introVarInner(Statement premise1, Statement premise2, CompoundTerm oldCompound, DerivationContext nal) {
    Task task = nal.getCurrentTask();
    Sentence taskSentence = task.sentence;
    if (!taskSentence.isJudgment() || (premise1.getClass() != premise2.getClass()) || oldCompound.containsTerm(premise1)) {
        return false;
    }
    Term subject1 = premise1.getSubject();
    Term subject2 = premise2.getSubject();
    Term predicate1 = premise1.getPredicate();
    Term predicate2 = premise2.getPredicate();
    Term commonTerm1, commonTerm2;
    if (subject1.equals(subject2)) {
        commonTerm1 = subject1;
        commonTerm2 = secondCommonTerm(predicate1, predicate2, 0);
    } else if (predicate1.equals(predicate2)) {
        commonTerm1 = predicate1;
        commonTerm2 = secondCommonTerm(subject1, subject2, 0);
    } else {
        return false;
    }
    Sentence belief = nal.getCurrentBelief();
    HashMap<Term, Term> substitute = new HashMap<>();
    boolean b1 = false, b2 = false;
    {
        Variable varDep2 = new Variable("#varDep2");
        Term content = Conjunction.make(premise1, oldCompound);
        if (!(content instanceof CompoundTerm))
            return false;
        substitute.put(commonTerm1, varDep2);
        content = ((CompoundTerm) content).applySubstitute(substitute);
        TruthValue truth = intersection(taskSentence.truth, belief.truth);
        BudgetValue budget = BudgetFunctions.forward(truth, nal);
        b1 = (nal.doublePremiseTask(content, truth, budget, false, false)) != null;
    }
    substitute.clear();
    {
        Variable varInd1 = new Variable("$varInd1");
        Variable varInd2 = new Variable("$varInd2");
        substitute.put(commonTerm1, varInd1);
        if (commonTerm2 != null) {
            substitute.put(commonTerm2, varInd2);
        }
        Term content = Implication.make(premise1, oldCompound);
        if ((content == null) || (!(content instanceof CompoundTerm))) {
            return false;
        }
        content = ((CompoundTerm) content).applySubstituteToCompound(substitute);
        TruthValue truth;
        if (premise1.equals(taskSentence.term)) {
            truth = induction(belief.truth, taskSentence.truth);
        } else {
            truth = induction(taskSentence.truth, belief.truth);
        }
        BudgetValue budget = BudgetFunctions.forward(truth, nal);
        b2 = nal.doublePremiseTask(content, truth, budget, false, false) != null;
    }
    return b1 || b2;
}

Example 28 with Task

use of nars.entity.Task 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 29 with Task

use of nars.entity.Task in project opennars by opennars.

the class CompositionalRules method decomposeStatement.

/**
 * {(||, S, P), P} |- S {(&&, S, P), P} |- S
 *
 * @param implication The implication term to be decomposed
 * @param componentCommon The part of the implication to be removed
 * @param compoundTask Whether the implication comes from the task
 * @param nal Reference to the memory
 */
static void decomposeStatement(CompoundTerm compound, Term component, boolean compoundTask, int index, DerivationContext nal) {
    boolean isTemporalConjunction = (compound instanceof Conjunction) && !((Conjunction) compound).isSpatial;
    if (isTemporalConjunction && (compound.getTemporalOrder() == TemporalRules.ORDER_FORWARD) && (index != 0)) {
        return;
    }
    long occurrence_time = nal.getTheNewStamp().getOccurrenceTime();
    if (isTemporalConjunction && (compound.getTemporalOrder() == TemporalRules.ORDER_FORWARD)) {
        if (!nal.getCurrentTask().sentence.isEternal() && compound.term[index + 1] instanceof Interval) {
            long shift_occurrence = ((Interval) compound.term[1]).time;
            occurrence_time = nal.getCurrentTask().sentence.getOccurenceTime() + shift_occurrence;
        }
    }
    Task task = nal.getCurrentTask();
    Sentence taskSentence = task.sentence;
    Sentence belief = nal.getCurrentBelief();
    Term content = reduceComponents(compound, component, nal.mem());
    if (content == null) {
        return;
    }
    TruthValue truth = null;
    BudgetValue budget;
    if (taskSentence.isQuestion() || taskSentence.isQuest()) {
        budget = BudgetFunctions.compoundBackward(content, nal);
        nal.getTheNewStamp().setOccurrenceTime(occurrence_time);
        nal.doublePremiseTask(content, truth, budget, false, false);
        // special inference to answer conjunctive questions with query variables
        if (taskSentence.term.hasVarQuery()) {
            Concept contentConcept = nal.mem().concept(content);
            if (contentConcept == null) {
                return;
            }
            Sentence contentBelief = contentConcept.getBelief(nal, task);
            if (contentBelief == null) {
                return;
            }
            Task contentTask = new Task(contentBelief, task.budget, false);
            nal.setCurrentTask(contentTask);
            Term conj = Conjunction.make(component, content);
            truth = intersection(contentBelief.truth, belief.truth);
            budget = BudgetFunctions.compoundForward(truth, conj, nal);
            nal.getTheNewStamp().setOccurrenceTime(occurrence_time);
            nal.doublePremiseTask(conj, truth, budget, false, false);
        }
    } else {
        TruthValue v1, v2;
        if (compoundTask) {
            v1 = taskSentence.truth;
            v2 = belief.truth;
        } else {
            v1 = belief.truth;
            v2 = taskSentence.truth;
        }
        if (compound instanceof Conjunction) {
            if (taskSentence.isGoal()) {
                if (compoundTask) {
                    truth = intersection(v1, v2);
                } else {
                    return;
                }
            } else {
                // isJudgment
                truth = reduceConjunction(v1, v2);
            }
        } else if (compound instanceof Disjunction) {
            if (taskSentence.isGoal()) {
                if (compoundTask) {
                    truth = reduceConjunction(v2, v1);
                } else {
                    return;
                }
            } else {
                // isJudgment
                truth = reduceDisjunction(v1, v2);
            }
        } else {
            return;
        }
        budget = BudgetFunctions.compoundForward(truth, content, nal);
    }
    nal.getTheNewStamp().setOccurrenceTime(occurrence_time);
    nal.doublePremiseTask(content, truth, budget, false, false);
}

Example 30 with Task

use of nars.entity.Task in project opennars by opennars.

the class LocalRules method matchReverse.

/* -------------------- same terms, difference relations -------------------- */
/**
 * The task and belief match reversely
 *
 * @param nal Reference to the memory
 */
public static void matchReverse(final DerivationContext nal) {
    Task task = nal.getCurrentTask();
    Sentence belief = nal.getCurrentBelief();
    Sentence sentence = task.sentence;
    if (matchingOrder(sentence.getTemporalOrder(), reverseOrder(belief.getTemporalOrder()))) {
        if (sentence.isJudgment()) {
            inferToSym(sentence, belief, nal);
        } else {
            conversion(nal);
        }
    }
}