// https://github.com/opennars/opennars/blob/master/nars_core/nars/inference/TemporalRules.java#L502
/**
* Evaluate the quality of the judgment as a solution to a problem
*
* \param problem A goal or question
* \param solution The solution to be evaluated
* \return The quality of the judgment as the solution
*/
public static float solutionQuality(EnumRateByConfidence rateByConfidence, ClassicalTask problemTask, ClassicalSentence solution, Memory memory, CompoundAndTermContext compoundAndTermContext)
{
ClassicalSentence problem = problemTask.sentence;
/* TODO< implement TEMPORAL
* if (!matchingOrder(problem.temporalOrder, solution.temporalOrder)) {
* return 0.0F;
* }
*/
TruthValue truth = solution.truth;
if (problem.stamp.occurrenceTime != solution.stamp.occurrenceTime)
{
truth = solution.projectionTruth(problem.stamp.occurrenceTime, memory.time);
}
//when the solutions are comparable, we have to use confidence!! else truth expectation.
//this way negative evidence can update the solution instead of getting ignored due to lower truth expectation.
//so the previous handling to let whether the problem has query vars decide was wrong.
if (rateByConfidence == EnumRateByConfidence.NO)
{
return((float)(truth.expectation / Math.Sqrt(Math.Sqrt(Math.Sqrt(compoundAndTermContext.getTermComplexityOfAndByTermReferer(solution.term) * Parameters.COMPLEXITY_UNIT)))));
}
else
{
return(truth.confidence);
}
}
// TODO< rename to evaluateQualityOfBeliefAsASolutionToProblemAndReward and refactor into functions >
// https://github.com/opennars/opennars/blob/master/nars_core/nars/inference/TemporalRules.java#L537
/* ----- Functions used both in direct and indirect processing of tasks ----- */
/**
* Evaluate the quality of a belief as a solution to a problem, then reward
* the belief and de-prioritize the problem
*
* \param problem The problem (question or goal) to be solved
* \param solution The belief as solution
* \param task The task to be immediately processed, or null for continued process
* \return The budget for the new task which is the belief activated, if
* necessary
*/
public static ClassicalBudgetValue solutionEval(
ClassicalTask problem,
ClassicalSentence solution,
ClassicalTask task,
DerivationContext ctx
)
{
ClassicalBudgetValue budget = null;
bool feedbackToLinks = false;
if (task == null)
{
task = ctx.currentTask;
feedbackToLinks = true;
}
bool taskSentenceIsjudgment = task.sentence.isJudgment;
EnumRateByConfidence rateByConfidence = problem.sentence.term.hasVarQuery() ? EnumRateByConfidence.YES : EnumRateByConfidence.NO; // here its whether its a what or where question for budget adjustment
float quality = TemporalRules.solutionQuality(rateByConfidence, problem, solution, ctx.memory, ctx.compoundAndTermContext);
if (problem.sentence.isGoal)
{
ctx.memory.emotion.adjustHappy(quality, task.budget.priority, ctx);
}
if (taskSentenceIsjudgment)
{
task.budget.incPriority(quality);
}
else
{
float taskPriority = task.budget.priority; // +goal satisfication is a matter of degree - https://groups.google.com/forum/#!topic/open-nars/ZfCM416Dx1M
budget = new ClassicalBudgetValue(UtilityFunctions.or(taskPriority, quality), task.budget.durability, BudgetFunctions.truthToQuality(solution.truth));
task.budget.priority = Math.Min(1 - quality, taskPriority);
}
// TODO< implement links >
/* LINKS commented because links are not implemented
* if (feedbackToLinks) {
* TaskLink tLink = ctx.currentTaskLink;
* tLink.setPriority(Math.Min(1 - quality, tLink.getPriority()));
* TermLink bLink = ctx.currentBeliefLink;
* bLink.incPriority(quality);
* }*/
return(budget);
}