private static double CalculateCriticalityRisk(IList <IActivity <int> > activities, ActivitySeverityLookup activitySeverityLookup)
{
if (activities == null)
{
throw new ArgumentNullException(nameof(activities));
}
if (activitySeverityLookup == null)
{
throw new ArgumentNullException(nameof(activitySeverityLookup));
}
double numerator = activities.Sum(activity => activitySeverityLookup.FindSlackCriticalityWeight(activity.TotalSlack));
double denominator = activitySeverityLookup.CriticalCriticalityWeight() * activities.Count;
return(numerator / denominator);
}
private static double CalculateGeometricCriticalityRisk(IList <IActivity <int> > activities, ActivitySeverityLookup activitySeverityLookup)
{
if (activities == null)
{
throw new ArgumentNullException(nameof(activities));
}
if (activitySeverityLookup == null)
{
throw new ArgumentNullException(nameof(activitySeverityLookup));
}
double numerator = 1.0;
foreach (Activity <int> activity in activities)
{
numerator *= activitySeverityLookup.FindSlackCriticalityWeight(activity.TotalSlack);
}
numerator = Math.Pow(numerator, 1.0 / activities.Count);
double denominator = activitySeverityLookup.CriticalCriticalityWeight();
return(numerator / denominator);
}