/**
* Generates new simulated observations and adds them to the dialogue state. The method returns
* true when a new user input has been generated, and false otherwise.
*
* @return whether a user input has been generated @
*/
private boolean addNewObservations() {
List<String> newObsVars = new ArrayList<String>();
for (String var : simulatorState.getChanceNodeIds()) {
if (var.contains("^o'")) {
newObsVars.add(var);
}
}
if (!newObsVars.isEmpty()) {
MultivariateDistribution newObs = simulatorState.queryProb(newObsVars);
for (String newObsVar : newObsVars) {
newObs.modifyVariableId(newObsVar, newObsVar.replace("^o'", ""));
}
while (system.isPaused()) {
try {
Thread.sleep(50);
} catch (InterruptedException e) {
}
}
if (!newObs.getValues().isEmpty()) {
if (newObs.getVariables().contains(system.getSettings().userInput)) {
log.fine("Simulator output: " + newObs + "\n --------------");
system.addContent(newObs);
return true;
} else {
log.fine("Contextual variables: " + newObs);
system.addContent(newObs);
}
}
}
return false;
}
/** Adds an empty action to the dialogue system to start the interaction. */
@Override
public void start() {
Assignment emptyAction = new Assignment(system.getSettings().systemOutput, ValueFactory.none());
if (system.isPaused()) {
system.getState().addToState(emptyAction);
} else {
system.addContent(emptyAction);
}
system.attachModule(RewardLearner.class);
}