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

Example 36 with BudgetValue

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

the class NAR method ask.

public NAR ask(String termString, AnswerHandler answered) throws InvalidInputException {
    Task t;
    addInput(t = new Task(new Sentence(new Narsese(this).parseTerm(termString), Symbols.QUESTION_MARK, null, new Stamp(memory, Tense.Eternal)), new BudgetValue(Parameters.DEFAULT_QUESTION_PRIORITY, Parameters.DEFAULT_QUESTION_DURABILITY, 1), true));
    if (answered != null) {
        answered.start(t, this);
    }
    return this;
}

Example 37 with BudgetValue

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

the class Narsese method parseTask.

/**
 * Enter a new Task in String into the memory, called from InputWindow or
 * locally.
 *
 * @param s the single-line addInput String
 * @param memory Reference to the memory
 * @param time The current time
 * @return An experienced task
 */
public Task parseTask(String s) throws InvalidInputException {
    StringBuilder buffer = new StringBuilder(Texts.escape(s));
    String budgetString = getBudgetString(buffer);
    String truthString = getTruthString(buffer);
    Tense tense = parseTense(buffer);
    String str = buffer.toString().trim();
    int last = str.length() - 1;
    char punc = str.charAt(last);
    Stamp stamp = new Stamp(-1, /* if -1, will be set right before the Task is input */
    tense, memory.newStampSerial(), Parameters.DURATION);
    TruthValue truth = parseTruth(truthString, punc);
    Term content = parseTerm(str.substring(0, last));
    if (content == null)
        throw new InvalidInputException("Content term missing");
    Sentence sentence = new Sentence(content, punc, truth, stamp);
    // if ((content instanceof Conjunction) && Variable.containVarDep(content.getName())) {
    // sentence.setRevisible(false);
    // }
    BudgetValue budget = parseBudget(budgetString, punc, truth);
    Task task = new Task(sentence, budget, true);
    return task;
}

Example 38 with BudgetValue

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

the class BudgetFunctions method budgetInference.

/**
 * Common processing for all inference step
 *
 * @param qual Quality of the inference
 * @param complexity Syntactic complexity of the conclusion
 * @param nal Reference to the memory
 * @return Budget of the conclusion task
 */
private static BudgetValue budgetInference(final float qual, final float complexity, final nars.control.DerivationContext nal) {
    Item t = nal.getCurrentTaskLink();
    if (t == null) {
        t = nal.getCurrentTask();
    }
    float priority = t.getPriority();
    float durability = t.getDurability() / complexity;
    final float quality = qual / complexity;
    final TermLink bLink = nal.getCurrentBeliefLink();
    if (bLink != null) {
        priority = or(priority, bLink.getPriority());
        durability = and(durability, bLink.getDurability());
        final float targetActivation = conceptActivation(nal.memory, bLink.target);
        bLink.incPriority(or(quality, targetActivation));
        bLink.incDurability(quality);
    }
    return new BudgetValue(priority, durability, quality);
}

Example 39 with BudgetValue

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

the class BudgetFunctions method update.

/**
 * Update a belief
 *
 * @param task The task containing new belief
 * @param bTruth Truth value of the previous belief
 * @return Budget value of the updating task
 */
static BudgetValue update(final Task task, final TruthValue bTruth) {
    final TruthValue tTruth = task.sentence.truth;
    final float dif = tTruth.getExpDifAbs(bTruth);
    final float priority = or(dif, task.getPriority());
    final float durability = aveAri(dif, task.getDurability());
    final float quality = truthToQuality(bTruth);
    return new BudgetValue(priority, durability, quality);
}

Example 40 with BudgetValue

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

the class Counting method setEnabled.

@Override
public boolean setEnabled(NAR n, boolean enabled) {
    Memory memory = n.memory;
    if (obs == null) {
        obs = new EventObserver() {

            @Override
            public void event(Class event, Object[] a) {
                if ((event != Events.TaskDerive.class && event != Events.TaskAdd.class))
                    return;
                Task task = (Task) a[0];
                if (task.getPriority() < InternalExperience.MINIMUM_PRIORITY_TO_CREATE_WANT_BELIEVE_ETC) {
                    return;
                }
                if (task.sentence.punctuation == Symbols.JUDGMENT_MARK) {
                    // lets say we have <{...} --> M>.
                    if (task.sentence.term instanceof Inheritance) {
                        Inheritance inh = (Inheritance) task.sentence.term;
                        if (inh.getSubject() instanceof SetExt) {
                            SetExt set_term = (SetExt) inh.getSubject();
                            // this gets the cardinality of M
                            int cardinality = set_term.size();
                            // now create term <(*,M,cardinality) --> CARDINALITY>.
                            Term[] product_args = new Term[] { inh.getPredicate(), Term.get(cardinality) };
                            // TODO CARDINATLITY can be a static final instance shared by all
                            Term new_term = Inheritance.make(new Product(product_args), /* --> */
                            CARDINALITY);
                            if (new_term == null) {
                                // this usually happens when product_args contains the term CARDINALITY in which case it is an invalid Inheritance statement
                                return;
                            }
                            TruthValue truth = task.sentence.truth.clone();
                            Stamp stampi = task.sentence.stamp.clone();
                            Sentence j = new Sentence(new_term, Symbols.JUDGMENT_MARK, truth, stampi);
                            BudgetValue budg = task.budget.clone();
                            Task newTask = new Task(j, budg, true);
                            memory.addNewTask(newTask, "Derived (Cardinality)");
                        }
                    }
                }
            }
        };
    }
    memory.event.set(obs, enabled, Events.TaskDerive.class);
    return true;
}