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- package holeg.algorithm.objective_function;
- import java.util.logging.Logger;
- import holeg.model.Flexibility;
- import holeg.model.Holon;
- import holeg.model.HolonElement.Priority;
- import holeg.model.HolonObject;
- import holeg.model.Model;
- public class ObjectiveFunctionByCarlos {
- // Parameters
- private static final Logger log = Logger.getLogger(ObjectiveFunctionByCarlos.class.getName());
- static double w_eb = .3, w_state = .3, w_pro = .2, w_perf = .1, w_holon = .1;
- static double k_eb = 750000.f, k_state = 20000, k_pro = 3000, k_perf = 15000, k_holon = 200000;
- // theta for f_pro
- static double theta = 3;
- // kappas for f_perf:
- static double kappa_f_unre = 120;
- static double kappa_f_cool = 60 * 60 * 24;
- static double kappa_f_dur = 60 * 60;
- // lambdas for f_perf:
- static double lambda_f_unre = 10;
- static double lambda_f_cool = 10;
- static double lambda_f_dur = 10;
- static double lambda_f_change = 1000;
- // pre-calculated parameters for partial function terms:
- /**
- * Pre calculated for the squash function <br>
- * {@link ObjectiveFunctionByCarlos#squash}
- */
- static double squash_subtract = 100.f / (1.f + (float) Math.exp(5.0));
- static double range_for_kappa_f_unre = range(kappa_f_unre);
- static double range_for_kappa_f_cool = range(kappa_f_cool);
- static double range_for_kappa_f_dur = range(kappa_f_dur);
- static {
- // init
- checkParameter();
- }
- /**
- * Check parameter Setting and print error when wrong values are put in. Here
- * should all invariants be placed to be checked on initialization.
- */
- private static void checkParameter() {
- boolean parameterSumOne = Math.abs(w_eb + w_state + w_pro + w_perf + w_holon - 1) < 0.001;
- if (!parameterSumOne) {
- log.warning("ParameterError in ObjectiveFunction: w1 + w2 + w3 + w4 + w5 should be 1");
- }
- }
- /**
- * ObjectifeFunction by Carlos. Function computes f_g: f_g = w1 * squash(f_eb,
- * k1) + w2 * squash(f_state, k2) + w3 * squash(f_pro, k3) + w4 * squash(f_perf,
- * k4) + w5 * squash(f_holon, k5)
- *
- *
- * squash is the squashing function {@link ObjectiveFunctionByCarlos#squash}
- *
- *
- * @return f_g value between 0 and 100
- */
- static public double getFitnessValueForState(Model model) {
- // Calculate f_eb the penalty for unbalenced energy in the network
- double f_eb = 0;
- // sum over all objects
- for (Holon holon : model.holons) {
- double netEnergyDifference = holon.holonObjects.stream().map(hO -> Math.abs(hO.getActualEnergy())).reduce(0.0f, Float::sum);
- f_eb += netEnergyDifference;
- }
- // Calculate f_state the penalty function for the supply state
- double f_state = 0;
- for (Holon holon : model.holons) {
- f_state += holon.holonObjects.stream().filter(hO -> hO.getState() != HolonObject.HolonObjectState.PRODUCER)
- .map(HolonObject::getSupplyBarPercentage).reduce(0.f, Float::sum);
- }
- // calculate f_pro the penalty function for priority usage
- // for each active flexibility punish
- double f_pro = model.getAllFlexibilities().stream().filter(flex -> flex.getState().equals(Flexibility.FlexState.IN_USE))
- .map(flex -> Math.pow(theta, priorityToDouble(flex.getElement().getPriority())) - 1.0)
- .reduce(0.0, Double::sum);
- // calculate f_perf the penalty function for the quality of a flexibility used
- // and the subfuction f_unre, f_cool, f_dur
- double f_perf = 0;
- for (Flexibility flex : model.getAllFlexibilities().stream().filter(flex -> flex.getState().equals(Flexibility.FlexState.IN_USE)).toList()) {
- double f_unre = unresponsivnessPenalty(flex.getSpeed());
- double f_cool = cooldownPenalty(flex.getCooldown());
- double f_dur = durationPenalty(flex.getDuration());
- f_perf += f_unre + f_cool + f_dur;
- }
- // calculate f_holon
- double f_holon = 0;
- for (Holon net : model.holons) {
- double f_elements_deviation_production = net.getDeviationInProductionInNetworkForHolonObjects();
- double f_elements_deviation_consumption = net.getDeviationInProductionInNetworkForHolonObjects();
- double f_flexibility_deviation_consumption = net.getDeviationInFlexibilityConsumption();
- double f_flexibility_deviation_production = net.getDeviationInFlexibilityProduction();
- double con = net.getTotalConsumption();
- double prod = net.getTotalProduction();
- double flexcapProd = net.getFlexibilityProductionCapacity();
- double flexcapCon = net.getFlexibilityConsumptionCapacity();
- double f_change_positive = lambda_f_change
- - lambda_f_change * Math.min(1, (con > 0.0) ? flexcapProd / con : 1.0);
- double f_change_negativ = lambda_f_change
- - lambda_f_change * Math.min(1, (prod > 0.0) ? flexcapCon / prod : 1.0);
- double f_element = f_elements_deviation_production + f_elements_deviation_consumption;
- double f_flexibility = f_flexibility_deviation_consumption + f_flexibility_deviation_production;
- double f_change = f_change_positive + f_change_negativ;
- f_holon += f_element + f_flexibility + f_change;
- }
- double q1 = squash(f_eb, k_eb);
- double q2 = squash(f_state, k_state);
- double q3 = squash(f_pro, k_pro);
- double q4 = squash(f_perf, k_perf);
- double q5 = squash(f_holon, k_holon);
- log.finer("f_eb= " + f_eb + " f_state= " + f_state + " f_pro= " + f_pro + " f_perf= " + f_perf + " f_holon= "
- + f_holon + " q1= " + q1 + " q2= " + q2 + " q3= " + q3 + " q4= " + q4 + " q5= " + q5);
- return w_eb * q1 + w_state * q2 + w_pro * q3 + w_perf * q4 + w_holon * q5;
- }
- /**
- * The squashing function in paper
- *
- * @param x the input
- * @param kappa the corresponding kappa
- */
- static public double squash(double x, double kappa) {
- return 100.f / (1.0f + Math.exp(-(10.f * (x - kappa / 2.f)) / kappa)) - squash_subtract;
- }
- /**
- * f_sup in paper
- *
- * @param supply from 0 to 1
- */
- static public double supplyPenalty(double supply) {
- double supplyPercentage = 100 * supply;
- // double test = (supplyPercentage < 100) ? -0.5 * supplyPercentage + 50:
- // supplyPercentage - 100;
- return (supplyPercentage < 100) ? -0.5 * supplyPercentage + 50 : supplyPercentage - 100;
- }
- private static double priorityToDouble(Priority priority) {
- return switch (priority) {
- case Essential -> 3.;
- case High -> 2.;
- case Medium -> 1.;
- default -> 0.;
- };
- }
- /**
- * Attention Math.log calcultae ln not log
- */
- private static double range(double kappa) {
- return -kappa / Math.log(Math.pow(2.0, 0.05) - 1.0);
- }
- /**
- * f_unre
- */
- private static double unresponsivnessPenalty(double unresponsiv) {
- return (2.0 * lambda_f_unre) / (1 + Math.exp(-unresponsiv / range_for_kappa_f_unre)) - lambda_f_unre;
- }
- /**
- * f_cool
- */
- private static double cooldownPenalty(double cooldown) {
- return (2.0 * lambda_f_cool) / (1 + Math.exp(-cooldown / range_for_kappa_f_cool)) - lambda_f_cool;
- }
- private static double durationPenalty(double duration) {
- double lambda_dur_times2 = 2.0 * lambda_f_dur;
- return -lambda_dur_times2 / (1 + Math.exp(-duration / range_for_kappa_f_dur)) + lambda_dur_times2;
- }
- }
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