@Test
 public void testTemplate7() throws Exception {
   Template template1 = new Template("here we have slot {A} and slot {B}");
   Assignment fillers = new Assignment();
   fillers.addPair("A", "apple");
   fillers.addPair("B", "banana");
   assertEquals("here we have slot apple and slot banana", template1.fillSlots(fillers));
   fillers.removePair("B");
   assertEquals("B", new Template(template1.fillSlots(fillers)).getSlots().iterator().next());
 }
Example #2
0
  /**
   * Grounds the parameter by assigning the values in the assignment to the unknown variables
   *
   * @param input the grounding assignment
   * @return the grounded parameter
   */
  public Parameter ground(Assignment input) {
    if (input.containsVars(expression.getVariables())) {
      try {
        double result = expression.evaluate(input);
        return new FixedParameter(result);
      } catch (IllegalArgumentException e) {
        log.warning("cannot ground " + expression + " with " + input);
      }
    }

    String filled = expression.toString();
    for (String u : input.getVariables()) {
      filled.replaceAll(u, input.getValue(u).toString());
    }
    return new ComplexParameter(filled);
  }
Example #3
0
    /**
     * Returns the groundings associated with the rule case, given the input assignment
     *
     * @param input the input assignment
     * @return the resulting groundings
     */
    public RuleGrounding getGroundings(Assignment input) {
      RuleGrounding groundings = new RuleGrounding();
      groundings.add(condition.getGroundings(input));

      if (ruleType == RuleType.UTIL) {
        boolean actionVars = input.containsVars(output.getOutputVariables());
        for (Effect e : getEffects()) {
          if (actionVars) {
            Condition co = e.convertToCondition();
            RuleGrounding effectGrounding = co.getGroundings(input);
            groundings.add(effectGrounding);
          } else {
            Set<String> slots = e.getValueSlots();
            slots.removeAll(input.getVariables());
            groundings.add(Assignment.createOneValue(slots, ""));
          }
        }
      }
      return groundings;
    }
Example #4
0
  /**
   * Returns the first rule output whose condition matches the input assignment provided as
   * argument. The output contains the grounded list of effects associated with the satisfied
   * condition.
   *
   * @param input the input assignment
   * @return the matched rule output.
   */
  public RuleOutput getOutput(Assignment input) {

    RuleOutput output = new RuleOutput(ruleType);
    RuleGrounding groundings = getGroundings(input);
    for (Assignment g : groundings.getAlternatives()) {

      Assignment full = !(g.isEmpty()) ? new Assignment(input, g) : input;

      RuleOutput match =
          cases
              .stream()
              .filter(c -> c.condition.isSatisfiedBy(full))
              .map(c -> c.output)
              .findFirst()
              .orElse(new RuleOutput(ruleType));

      match = match.ground(full);
      output.addOutput(match);
    }

    return output;
  }
Example #5
0
  /**
   * Performs the dialogue turn in the simulator.
   *
   * @param systemAction the last system action. @
   */
  private synchronized boolean performTurn(Value systemAction) {

    boolean turnPerformed = false;
    simulatorState.setParameters(domain.getParameters());
    Assignment systemAssign = new Assignment(system.getSettings().systemOutput, systemAction);
    simulatorState.addToState(systemAssign);

    while (!simulatorState.getNewVariables().isEmpty()) {
      Set<String> toProcess = simulatorState.getNewVariables();
      simulatorState.reduce();

      for (Model model : domain.getModels()) {
        if (model.isTriggered(simulatorState, toProcess)) {
          boolean change = model.trigger(simulatorState);
          if (change && model.isBlocking()) {
            break;
          }
        }
      }

      if (!simulatorState.getUtilityNodeIds().isEmpty()) {
        double reward = simulatorState.queryUtil();
        String comment = "Reward: " + StringUtils.getShortForm(reward);
        system.displayComment(comment);
        system
            .getState()
            .addEvidence(new Assignment("R(" + systemAssign.addPrimes() + ")", reward));
        simulatorState.removeNodes(simulatorState.getUtilityNodeIds());
      }

      if (addNewObservations()) {
        turnPerformed = true;
      }

      simulatorState.addEvidence(simulatorState.getSample());
    }
    return turnPerformed;
  }