protected override void SetProbability(DestinationSampler destinationSampler, bool skipChoicePropabilityCalculator = false) {
var zoneProbability1 = _tourWeightFromOrigin / Math.Max(_totalTourWeightFromOrigin, Constants.EPSILON);
var zoneProbability2 = _tripWeightFromOrigin / Math.Max(_totalTripWeightFromOrigin, Constants.EPSILON);
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
var setAvailability = destinationSampler._choiceProbabilityCalculator.ModelIsInEstimationMode && ParcelId == destinationSampler._chosenParcel.Id;
if (Global.Configuration.DestinationScale == Global.Settings.DestinationScales.Zone) {
Probability1 = zoneProbability1;
Probability2 = zoneProbability2;
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
if (setAvailability) {
Available = (Probability1 > 0 || Probability2 > 0) && _tourWeightFromOrigin > Global.Configuration.MinParcelSize;
if (!skipChoicePropabilityCalculator) Alternative.Available = Available;
}
return;
}
// excludedSize will be 0 when in model is in estimation mode and the sample item is the chosen alternative
var excludedSize = setAvailability ? 0 : ExcludedSize;
var parcelProbability = SizeFromDestination / Math.Max(TotalSizeFromDestination - excludedSize, Constants.EPSILON);
Probability1 = zoneProbability1 * parcelProbability;
Probability2 = zoneProbability2 * parcelProbability;
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
if (setAvailability) {
Available = (Probability1 > 0 || Probability2 > 0) && SizeFromDestination >= Global.Configuration.MinParcelSize;
if (!skipChoicePropabilityCalculator) Alternative.Available = Available;
}
}
protected override void SetProbability(DestinationSampler destinationSampler, bool skipChoicePropabilityCalculator = false) {
var zoneProbability = _weightFromOrigin / Math.Max(_totalWeightFromOrigin, Constants.EPSILON);
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
//JLB 20120329 replaced followign to allow for no chosen alt in destinationSampler when in estimation mode (usual work location model)
// var setAvailability = destinationSampler._choiceProbabilityCalculator.ModelIsInEstimationMode && ParcelId == destinationSampler._chosenParcel.Id;
var setAvailability = destinationSampler._choiceProbabilityCalculator.ModelIsInEstimationMode && destinationSampler._chosenParcel != null && ParcelId == destinationSampler._chosenParcel.Id;
if (Global.Configuration.DestinationScale == Global.Settings.DestinationScales.Zone) {
Probability = zoneProbability;
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
if (setAvailability) {
Available = Probability > 0 && _weightFromOrigin > Global.Configuration.MinParcelSize;
if (!skipChoicePropabilityCalculator) { Alternative.Available = Available; }
}
return;
}
// excludedSize will be 0 when in model is in estimation mode and the sample item is the chosen alternative
var excludedSize = setAvailability ? 0 : ExcludedSize;
var parcelProbability = SizeFromDestination / Math.Max(TotalSizeFromDestination - excludedSize, Constants.EPSILON);
Probability = zoneProbability * parcelProbability;
// set chosen alternative availability if model is in estimation mode and the sample item is the chosen alternative
if (setAvailability) {
Available = Probability > 0 && SizeFromDestination >= Global.Configuration.MinParcelSize;
if (!skipChoicePropabilityCalculator) { Alternative.Available = Available; }
}
}
public void SetAlternative <TSample>(DestinationSampler destinationSampler, Dictionary <TSample, int> sample,
bool isChosenAlternative, AlternativeType alternativeType = AlternativeType.Default, bool skipChoiceProbabilityCalculator = false) where TSample : ISampleItem
{
TSample key = (TSample)(object)this;
Available = true;
IsChosen = isChosenAlternative;
if (sample.ContainsKey(key))
{
sample[key] += 1;
}
else
{
int alternativeIndex;
switch (alternativeType)
{
case AlternativeType.Chosen:
if (sample.Count == destinationSampler._sampleSize)
{
sample.Remove(sample.Last().Key);
}
alternativeIndex = sample.Count;
break;
case AlternativeType.Usual:
// alternativeIndex = sample.Count;
alternativeIndex = destinationSampler._sampleSize;
break;
default:
alternativeIndex = destinationSampler._alternativeIndex++;
break;
}
sample.Add(key, 1);
if (!skipChoiceProbabilityCalculator)
{
Alternative = destinationSampler._choiceProbabilityCalculator.GetAlternative(alternativeIndex, true, isChosenAlternative);
}
SetProbability(destinationSampler, skipChoiceProbabilityCalculator);
}
}
// public bool Available { get; set; }
// public bool IsChosen { get; set; }
public override void Initialize(DestinationSampler destinationSampler, int destinationParcelId, int destinationParcelSequence, SegmentZone destinationSegmentZone) {
_weightFromOrigin = destinationSampler._originSegmentZone.GetWeight(destinationSegmentZone.Id);
_totalWeightFromOrigin = destinationSampler._originSegmentZone.TotalWeight;
TotalWeightFromDestination = destinationSegmentZone.TotalWeight;
ParcelId = destinationParcelId;
//if (Global.Configuration.DestinationScale == Constants.DestinationScale.ZONE) {
// return;
//}
SizeFromDestination = destinationSegmentZone.GetSize(destinationParcelSequence);
TotalSizeFromDestination = destinationSegmentZone.TotalSize;
}
protected abstract void SetProbability(DestinationSampler destinationSampler, bool skipChoiceProbabilityCalculator = false);
public abstract void Initialize(DestinationSampler destinationSampler, int destinationParcelId, int destinationParcelSequence, SegmentZone destinationSegmentZone);
