public static void ComputeDayWeights()
{
var wH = ApplicationSettings.Instance.HistoricWeight;
if (wH < 0)
{
throw new HelperClasses.LibraryException("The value of historic weight is {0} but it must be a positive value.", wH.ToString());
}
var D = ApplicationSettings.Instance.HistoryDaysCount;
Days = new StoneDay[D];
for (int d = 0; d < D; d++)
{
Days[d] = new StoneDay(d);
}
if (wH == 1)
{
for (int d = 0; d < D; d++)
{
Days[d].Weight = 1 / wH;
}
}
else
{
Days[D - 1].Weight = (1 - wH) / (1 - Math.Pow(wH, D));
for (int d = D - 2; d >= 0; d--)
{
Days[d].Weight = Math.Pow(wH, D - 1 - d) * Days[D - 1].Weight;
}
}
}
public bool IsGroupMember(StoneGroup group, StoneDay day)
{
return
(
DB
.NewContext()
.GroupClusterHistories
.Count(x => x.Day == day.Number && x.GroupNumber == group.Number && x.ClusterPrefix == this.Prefix) > 0
);
}