private double calcFNCostNextState(RepairAction repairAction, SystemState state)
{
SystemState nextState = state.GetNextState(repairAction);
if (nextState.Diagnoses.Count != state.Diagnoses.Count)
{
return(calcFNCostRegular(repairAction, nextState.HealthState));
}
else
{
return(calcFNCostRegular(repairAction, state.HealthState));
}
}
public override RepairAction Plan(SystemState state)
{
ResetProperties();
if (state == null || state.Diagnoses == null || state.Diagnoses.Count == 0)
{
return(null);
}
//improve the code appearance
List <Comp> bestRepairAction = new List <Comp>();
SystemState currState = state;
double totalUtility = double.MaxValue;
List <Comp> chosenAction;
int expandedCounter = 0;
while (!Stop())
{
double min = double.MaxValue;
chosenAction = null;
foreach (Diagnosis diagnosis in currState.Diagnoses.Diagnoses)
{
if (Stop())
{
break;
}
List <Comp> action = new List <Comp>(diagnosis.Comps);
if (action == null || action.Count == 0)
{
continue;
}
List <Comp> testedAction = new List <Comp>(action);
if (bestRepairAction != null && bestRepairAction.Count > 0)
{
testedAction.AddRange(bestRepairAction);
}
double utility = costEstimator.WastedCostUtility(new RepairAction(testedAction), state); //one option: action,currState, second option: testedAction,state
if (utility < min)
{
min = utility;
chosenAction = action;
}
}
currentDepth++;
expandedCounter++;
if (chosenAction != null && chosenAction.Count > 0)
{
if (totalUtility < min || min == 0)
{
if (bestRepairAction.Count == 0)
{
bestRepairAction.AddRange(chosenAction);
}
break;
}
bestRepairAction.AddRange(chosenAction);
currState = currState.GetNextState(new RepairAction(chosenAction));
totalUtility = min;
}
else
{
break;
}
}
RepairAction chosenRepairAction = new RepairAction(bestRepairAction);
FillIterationDetails(chosenRepairAction, expandedCounter, totalUtility);
return(chosenRepairAction);
}