Beispiel #1
0
        public void Run(PersonWrapper person, int sampleSize)
        {
            if (person == null)
            {
                throw new ArgumentNullException("person");
            }

            person.ResetRandom(0);

            if (Global.Configuration.IsInEstimationMode)
            {
                if (!_helpers[ParallelUtility.threadLocalAssignedIndex.Value].ModelIsInEstimationMode)
                {
                    return;
                }
            }

            var choiceProbabilityCalculator = _helpers[ParallelUtility.threadLocalAssignedIndex.Value].GetChoiceProbabilityCalculator(person.Id);

            if (_helpers[ParallelUtility.threadLocalAssignedIndex.Value].ModelIsInEstimationMode)
            {
                if (person.UsualWorkParcel == null)
                {
                    return;
                }

                var choseHome    = person.UsualWorkParcelId == person.Household.ResidenceParcelId; // JLB 20120329 added these two lines
                var chosenParcel = choseHome ? null : person.UsualWorkParcel;

                //RunModel(choiceProbabilityCalculator, person, sampleSize, person.UsualWorkParcel);
                RunModel(choiceProbabilityCalculator, person, sampleSize, chosenParcel, choseHome); // JLB 20120329 replaced above line
                                                                                                    // when chosenParcel is null:
                                                                                                    // DestinationSampler doesn't try to assign one of the sampled destinations as chosen
                                                                                                    // choseHome is NOT null, and RunModel sets the oddball location as chosen

                choiceProbabilityCalculator.WriteObservation();
            }
            else
            {
                RunModel(choiceProbabilityCalculator, person, sampleSize);

                var chosenAlternative = choiceProbabilityCalculator.SimulateChoice(person.Household.RandomUtility);
                var choice            = (ParcelWrapper)chosenAlternative.Choice;

                person.UsualWorkParcelId = choice.Id;
                person.UsualWorkParcel   = choice;
                person.UsualWorkZoneKey  = ChoiceModelFactory.ZoneKeys[choice.ZoneId];

                var skimValue = ImpedanceRoster.GetValue("ivtime", Global.Settings.Modes.Sov, Global.Settings.PathTypes.FullNetwork, Global.Settings.ValueOfTimes.DefaultVot, 1, person.Household.ResidenceParcel, choice);

                person.AutoTimeToUsualWork     = skimValue.Variable;
                person.AutoDistanceToUsualWork = skimValue.BlendVariable;

                person.SetWorkParcelPredictions();
            }
        }
Beispiel #2
0
        private void RunModel(ChoiceProbabilityCalculator choiceProbabilityCalculator, PersonWrapper person, int sampleSize, IParcelWrapper choice = null, bool choseHome = false)
        {
            var segment                  = Global.ContainerDaySim.GetInstance <SamplingWeightsSettingsFactory>().SamplingWeightsSettings.GetTourDestinationSegment(Global.Settings.Purposes.Work, Global.Settings.TourPriorities.HomeBasedTour, Global.Settings.Modes.Sov, person.PersonType);
            var destinationSampler       = new DestinationSampler(choiceProbabilityCalculator, segment, sampleSize, choice, person.Household.ResidenceParcel);
            var destinationArrivalTime   = ChoiceModelUtility.GetDestinationArrivalTime(Global.Settings.Models.WorkTourModeModel);
            var destinationDepartureTime = ChoiceModelUtility.GetDestinationDepartureTime(Global.Settings.Models.WorkTourModeModel);
            var workLocationUtilites     = new WorkLocationUtilities(person, sampleSize, destinationArrivalTime, destinationDepartureTime);

            var sampleItems = destinationSampler.SampleAndReturnTourDestinations(workLocationUtilites);

            int index = 0;

            foreach (var sampleItem in sampleItems)
            {
                bool   available         = sampleItem.Key.Available;
                bool   isChosen          = sampleItem.Key.IsChosen;
                double adjustmentFactor  = sampleItem.Key.AdjustmentFactor;
                var    destinationParcel = ChoiceModelFactory.Parcels[sampleItem.Key.ParcelId];

                var alternative = choiceProbabilityCalculator.GetAlternative(index++, available, isChosen);

                if (!available)
                {
                    continue;
                }

                alternative.Choice = destinationParcel;

                var workTourLogsum    = 0D;
                var nestedAlternative = Global.ChoiceModelSession.Get <WorkTourModeTimeModel>().RunNested(person, person.Household.ResidenceParcel, destinationParcel, destinationArrivalTime, destinationDepartureTime, person.Household.HouseholdTotals.DrivingAgeMembers, 0.0);
                workTourLogsum = nestedAlternative == null ? 0 : nestedAlternative.ComputeLogsum();

                var votSegment      = person.Household.GetVotALSegment();
                var taSegment       = destinationParcel.TransitAccessSegment();
                var aggregateLogsum = Global.AggregateLogsums[destinationParcel.ZoneId][Global.Settings.Purposes.HomeBasedComposite][Global.Settings.CarOwnerships.OneOrMoreCarsPerAdult][votSegment][taSegment];

                var distanceFromOrigin = person.Household.ResidenceParcel.DistanceFromOrigin(destinationParcel, 1);
                var distance1          = Math.Min(distanceFromOrigin, .35);
                var distance2          = Math.Max(0, Math.Min(distanceFromOrigin - .35, 1 - .35));
                var distance3          = Math.Max(0, distanceFromOrigin - 1);
                var distanceLog        = Math.Log(1 + distanceFromOrigin);
                var distanceFromSchool = person.IsFullOrPartTimeWorker ? 0 : person.UsualSchoolParcel.DistanceFromSchoolLog(destinationParcel, 1);


                // parcel buffers
                var educationBuffer  = Math.Log(destinationParcel.EmploymentEducationBuffer2 + 1);
                var governmentBuffer = Math.Log(destinationParcel.EmploymentGovernmentBuffer2 + 1);
                var officeBuffer     = Math.Log(destinationParcel.EmploymentOfficeBuffer2 + 1);
                var serviceBuffer    = Math.Log(destinationParcel.EmploymentServiceBuffer2 + 1);
                var householdsBuffer = Math.Log(destinationParcel.HouseholdsBuffer2 + 1);

                //                var retailBuffer = Math.Log(destinationParcel.EmploymentRetailBuffer2 + 1);
                var industrialAgricultureConstructionBuffer = Math.Log(destinationParcel.EmploymentIndustrialBuffer2 + destinationParcel.EmploymentAgricultureConstructionBuffer2 + 1);
                var foodBuffer               = Math.Log(destinationParcel.EmploymentFoodBuffer2 + 1);
                var medicalBuffer            = Math.Log(destinationParcel.EmploymentMedicalBuffer2 + 1);
                var employmentTotalBuffer    = Math.Log(destinationParcel.EmploymentTotalBuffer2 + 1);
                var studentsUniversityBuffer = Math.Log(destinationParcel.StudentsUniversityBuffer2 + 1);
                var studentsK12Buffer        = Math.Log(destinationParcel.StudentsK8Buffer2 + destinationParcel.StudentsHighSchoolBuffer2 + 1);

                //                var mixedUse4Index = destinationParcel.MixedUse4Index2();

                //size attributes (derived)
                var employmentIndustrialAgricultureConstruction = destinationParcel.EmploymentIndustrial + destinationParcel.EmploymentAgricultureConstruction;

                // parking attributes
                var parcelParkingDensity = destinationParcel.ParcelParkingPerTotalEmployment();

                // connectivity attributes
                var c34Ratio = destinationParcel.C34RatioBuffer1();


                // Stefan
                bool isInCopenhagenMunicipality  = true; //destinationParcel.Municipality == 101;  Need to change this after Municipality property is added to Actum parcel file
                var  employmentCommercial        = destinationParcel.EmploymentRetail + destinationParcel.EmploymentService;
                var  employmentCommercialBuffer1 = destinationParcel.EmploymentRetailBuffer1 + destinationParcel.EmploymentServiceBuffer1;

                double beta00002 = -2.53;
                double beta00003 = 2.65;
                double beta00004 = 1.57;
                double beta00005 = -0.18;
                double beta00006 = -0.43;
                double beta00007 = -0.19;
                double beta00008 = 0.33;
                double beta00009 = 0.007;
                double beta00010 = 0.55;

                var stefanUtility =
                    beta00002 * destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits +
                    beta00003 * (person.Household.Income < 300000).ToFlag() * destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits +
                    beta00004 * person.IsFemale.ToFlag() * destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits +
                    beta00005 * isInCopenhagenMunicipality.ToFlag() +
                    beta00006 * (person.Household.HasValidIncome && person.Household.Income < 300000).ToFlag() * isInCopenhagenMunicipality.ToFlag() +
                    beta00007 * (person.Household.HasValidIncome && person.Household.Income >= 300000 && person.Household.Income < 600000).ToFlag() * isInCopenhagenMunicipality.ToFlag() +
                    beta00008 * (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * isInCopenhagenMunicipality.ToFlag() +
                    beta00009 * person.Age * isInCopenhagenMunicipality.ToFlag() +
                    0.0; // beta00010 * (person.Household.ResidenceParcel.Municipality == destination.Municipality).ToFlag();



                //Stefan non-size terms.
                alternative.AddUtilityTerm(1, sampleItem.Key.AdjustmentFactor);
                //alternative.AddUtilityTerm(2, destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits);
                //alternative.AddUtilityTerm(3, (person.Household.Income < 300000).ToFlag() * destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits);
                //alternative.AddUtilityTerm(4, person.IsFemale.ToFlag() * destinationParcel.Households / destinationParcel.ThousandsSquareLengthUnits);
                //alternative.AddUtilityTerm(5, isInCopenhagenMunicipality.ToFlag());
                //alternative.AddUtilityTerm(6, (person.Household.HasValidIncome && person.Household.Income < 300000).ToFlag() * isInCopenhagenMunicipality.ToFlag());
                //alternative.AddUtilityTerm(7, (person.Household.HasValidIncome && person.Household.Income >= 300000 && person.Household.Income < 600000).ToFlag() * isInCopenhagenMunicipality.ToFlag());
                //alternative.AddUtilityTerm(8, (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * isInCopenhagenMunicipality.ToFlag());
                //alternative.AddUtilityTerm(9, person.Age * isInCopenhagenMunicipality.ToFlag());
                ////alternative.AddUtilityTerm(10, (person.Household.ResidenceParcel.Municipality == destination.Municipality).ToFlag());  // Acivate this after Municipality property is added to Actum parcel file
                //following logsums replace Stefan's car and public transport times
                alternative.AddUtilityTerm(11, (person.Household.HasValidIncome && person.Household.Income < 300000).ToFlag() * workTourLogsum);
                alternative.AddUtilityTerm(12, (person.Household.HasValidIncome && person.Household.Income >= 300000 && person.Household.Income < 600000).ToFlag() * workTourLogsum);
                alternative.AddUtilityTerm(13, (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * workTourLogsum);
                alternative.AddUtilityTerm(14, person.Household.HasMissingIncome.ToFlag() * workTourLogsum);
                alternative.AddUtilityTerm(15, person.IsFemale.ToFlag() * workTourLogsum);
                alternative.AddUtilityTerm(16, person.Age * workTourLogsum);
                alternative.AddUtilityTerm(17, (person.MainOccupation == 50).ToFlag() * workTourLogsum); // self-employed
                                                                                                         //Stefan's composite term 18 replaces terms 2-10 above
                alternative.AddUtilityTerm(18, stefanUtility);                                           // see above for this composite function of StefanMabitt's utility function

                //alternative.AddUtilityTerm(2, person.IsFulltimeWorker.ToFlag() * workTourLogsum);
                //alternative.AddUtilityTerm(3, person.IsPartTimeWorker.ToFlag() * workTourLogsum);
                //alternative.AddUtilityTerm(4, person.IsNotFullOrPartTimeWorker.ToFlag() * workTourLogsum);
                //alternative.AddUtilityTerm(5, distanceLog); // for distance calibration
                //alternative.AddUtilityTerm(6, person.IsFulltimeWorker.ToFlag() * distance1);
                //alternative.AddUtilityTerm(7, person.IsFulltimeWorker.ToFlag() * distance2);
                //alternative.AddUtilityTerm(8, person.IsFulltimeWorker.ToFlag() * distance3);
                //alternative.AddUtilityTerm(9, person.IsPartTimeWorker.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(10, person.IsNotFullOrPartTimeWorker.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(11, person.Household.Has0To15KIncome.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(12, person.Household.Has50To75KIncome.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(13, person.Household.Has75To100KIncome.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(14, person.IsFemale.ToFlag() * distanceLog);
                //alternative.AddUtilityTerm(15, person.IsStudentAge.ToFlag() * distanceFromSchool);
                //alternative.AddUtilityTerm(16, person.IsFulltimeWorker.ToFlag() * aggregateLogsum);
                //alternative.AddUtilityTerm(17, person.IsPartTimeWorker.ToFlag() * aggregateLogsum);
                //alternative.AddUtilityTerm(18, person.IsNotFullOrPartTimeWorker.ToFlag() * aggregateLogsum);
                //alternative.AddUtilityTerm(19, parcelParkingDensity);
                //alternative.AddUtilityTerm(20, c34Ratio);

                //Neighborhood
                //alternative.AddUtilityTerm(21, person.Household.HasValidIncome.ToFlag() * serviceBuffer);
                //alternative.AddUtilityTerm(22, person.Household.HasValidIncome.ToFlag() * educationBuffer);
                //alternative.AddUtilityTerm(23, person.Household.HasValidIncome.ToFlag() * foodBuffer);
                //alternative.AddUtilityTerm(24, person.Household.HasValidIncome.ToFlag() * governmentBuffer);
                //alternative.AddUtilityTerm(25, person.Household.HasValidIncome.ToFlag() * officeBuffer);
                //alternative.AddUtilityTerm(26, person.Household.HasValidIncome.ToFlag() * medicalBuffer);
                //alternative.AddUtilityTerm(27, person.Household.HasValidIncome.ToFlag() * householdsBuffer);
                //alternative.AddUtilityTerm(28, person.Household.HasValidIncome.ToFlag() * studentsUniversityBuffer);

                //alternative.AddUtilityTerm(29, person.Household.HasValidIncome.ToFlag() * person.IsFulltimeWorker.ToFlag() * studentsK12Buffer);
                //alternative.AddUtilityTerm(30, person.Household.HasValidIncome.ToFlag() * person.IsFulltimeWorker.ToFlag() * studentsUniversityBuffer);
                //alternative.AddUtilityTerm(31, person.Household.HasValidIncome.ToFlag() * person.IsPartTimeWorker.ToFlag() * industrialAgricultureConstructionBuffer);
                //alternative.AddUtilityTerm(32, person.Household.HasValidIncome.ToFlag() * person.IsNotFullOrPartTimeWorker.ToFlag() * foodBuffer);
                //alternative.AddUtilityTerm(33, person.Household.HasValidIncome.ToFlag() * person.IsNotFullOrPartTimeWorker.ToFlag() * medicalBuffer);

                //alternative.AddUtilityTerm(34, person.IsFulltimeWorker.ToFlag() * person.Household.Has75KPlusIncome.ToFlag() * employmentTotalBuffer);
                //alternative.AddUtilityTerm(35, person.IsNotFullOrPartTimeWorker.ToFlag() * person.Household.HasIncomeUnder50K.ToFlag() * governmentBuffer);
                //alternative.AddUtilityTerm(36, person.IsNotFullOrPartTimeWorker.ToFlag() * person.Household.HasIncomeUnder50K.ToFlag() * employmentTotalBuffer);

                //Size
                // Stefan size terms.
                // Note:  the following assumes: (1) Stefan's size variables enter his utility function as a logsum, a la BAL;
                //                               (2) Jobs--commercial and Jobs--finance apply to hh w unknown incomes in Stefan's spec
                //        If his size variables enter linearly, then if I want to replicate them I should not use alogit size functions.
                //        If Jobs--commercial and Jobs--finance don't apply to missing incomes, then I need to change the size functions below
                alternative.AddUtilityTerm(51, (person.Household.HasValidIncome && person.Household.Income < 300000).ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial));
                alternative.AddUtilityTerm(52, (person.Household.HasValidIncome && person.Household.Income >= 300000 && person.Household.Income < 600000).ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial));
                alternative.AddUtilityTerm(53, (person.Household.HasValidIncome && person.Household.Income >= 600000 && person.Household.Income < 900000).ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial));
                alternative.AddUtilityTerm(54, (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial));
                alternative.AddUtilityTerm(55, (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial)); // second term allows first one to have base coef of 0
                alternative.AddUtilityTerm(56, (person.Household.HasMissingIncome.ToFlag() * (destinationParcel.EmploymentTotal - employmentCommercial)));
                alternative.AddUtilityTerm(57, (person.Household.HasValidIncome && person.Household.Income < 300000).ToFlag() * employmentCommercial);
                alternative.AddUtilityTerm(58, (person.Household.HasValidIncome && person.Household.Income >= 300000 && person.Household.Income < 600000).ToFlag() * employmentCommercial);
                alternative.AddUtilityTerm(59, (person.Household.HasValidIncome && person.Household.Income >= 600000 && person.Household.Income < 900000).ToFlag() * employmentCommercial);
                alternative.AddUtilityTerm(60, (person.Household.HasValidIncome && person.Household.Income >= 900000).ToFlag() * employmentCommercial);
                alternative.AddUtilityTerm(61, person.Household.HasMissingIncome.ToFlag() * employmentCommercial);
                alternative.AddUtilityTerm(62, destinationParcel.EmploymentOffice);
                //The following combine with 51-55, 56-60 and 61 to include size of entire buffer region in main size variables
                alternative.AddUtilityTerm(63, (destinationParcel.EmploymentTotalBuffer1 - destinationParcel.EmploymentTotal) - (employmentCommercialBuffer1 - employmentCommercial));
                alternative.AddUtilityTerm(64, employmentCommercialBuffer1 - employmentCommercial);
                alternative.AddUtilityTerm(65, destinationParcel.EmploymentOfficeBuffer1 - destinationParcel.EmploymentOffice);

                //alternative.AddUtilityTerm(51, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentService);
                //alternative.AddUtilityTerm(52, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentEducation);
                //alternative.AddUtilityTerm(53, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentFood);
                //alternative.AddUtilityTerm(54, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentGovernment);
                //alternative.AddUtilityTerm(55, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentOffice);
                //alternative.AddUtilityTerm(56, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentRetail);
                //alternative.AddUtilityTerm(57, person.Household.HasValidIncome.ToFlag() * destinationParcel.EmploymentMedical);
                //alternative.AddUtilityTerm(58, person.Household.HasValidIncome.ToFlag() * employmentIndustrialAgricultureConstruction);
                //alternative.AddUtilityTerm(59, person.Household.HasValidIncome.ToFlag() * destinationParcel.StudentsUniversity);

                //alternative.AddUtilityTerm(60, person.Household.HasValidIncome.ToFlag() * person.IsFulltimeWorker.ToFlag() * destinationParcel.EmploymentGovernment);
                //alternative.AddUtilityTerm(61, person.Household.HasValidIncome.ToFlag() * person.IsFulltimeWorker.ToFlag() * employmentIndustrialAgricultureConstruction);
                //alternative.AddUtilityTerm(62, person.Household.HasValidIncome.ToFlag() * person.IsPartTimeWorker.ToFlag() * employmentIndustrialAgricultureConstruction);
                //alternative.AddUtilityTerm(63, person.Household.HasValidIncome.ToFlag() * person.IsNotFullOrPartTimeWorker.ToFlag() * destinationParcel.EmploymentEducation);
                //alternative.AddUtilityTerm(64, person.Household.HasValidIncome.ToFlag() * person.IsNotFullOrPartTimeWorker.ToFlag() * destinationParcel.EmploymentFood);
                //alternative.AddUtilityTerm(65, person.Household.HasValidIncome.ToFlag() * person.IsNotFullOrPartTimeWorker.ToFlag() * destinationParcel.EmploymentRetail);

                //alternative.AddUtilityTerm(66, person.Household.HasIncomeUnder50K.ToFlag() * destinationParcel.EmploymentRetail);
                //alternative.AddUtilityTerm(67, person.Household.HasIncomeUnder50K.ToFlag() * destinationParcel.EmploymentService);
                //alternative.AddUtilityTerm(68, person.Household.Has50To75KIncome.ToFlag() * destinationParcel.EmploymentMedical);
                //alternative.AddUtilityTerm(69, person.Household.Has50To75KIncome.ToFlag() * destinationParcel.EmploymentOffice);
                //alternative.AddUtilityTerm(70, person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentEducation);
                //alternative.AddUtilityTerm(71, person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentGovernment);
                //alternative.AddUtilityTerm(72, person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentMedical);
                //alternative.AddUtilityTerm(73, person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentOffice);

                //alternative.AddUtilityTerm(74, person.IsFulltimeWorker.ToFlag() * person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentGovernment);
                //alternative.AddUtilityTerm(75, person.IsFulltimeWorker.ToFlag() * (!person.Household.Has75KPlusIncome).ToFlag() * employmentIndustrialAgricultureConstruction);
                //alternative.AddUtilityTerm(76, person.IsPartTimeWorker.ToFlag() * (!person.Household.HasIncomeUnder50K).ToFlag() * destinationParcel.EmploymentMedical);
                //alternative.AddUtilityTerm(77, (!person.IsFulltimeWorker).ToFlag() * person.Household.Has75KPlusIncome.ToFlag() * destinationParcel.EmploymentOffice);
                //alternative.AddUtilityTerm(78, person.IsNotFullOrPartTimeWorker.ToFlag() * (!person.Household.HasIncomeUnder50K).ToFlag() * destinationParcel.EmploymentRetail);

                //alternative.AddUtilityTerm(79, person.Household.HasMissingIncome.ToFlag() * destinationParcel.EmploymentTotal);
                //alternative.AddUtilityTerm(80, person.Household.HasMissingIncome.ToFlag() * destinationParcel.StudentsUniversity);

                // set shadow price depending on persontype and add it to utility
                // we are using the sampling adjustment factor assuming that it is 1
                alternative.AddUtilityTerm(1, destinationParcel.ShadowPriceForEmployment);

                //remove nesting for estimation of conditional MNL
                alternative.AddNestedAlternative(sampleSize + 2, 0, 98);
            }

            // JLB 20120329 added third call parameter to idenitfy whether this alt is chosen or not
            var homeAlternative = choiceProbabilityCalculator.GetAlternative(sampleSize, true, choseHome);

            homeAlternative.Choice = person.Household.ResidenceParcel;

            homeAlternative.AddUtilityTerm(41, 1);
            homeAlternative.AddUtilityTerm(42, (person.MainOccupation == 50).ToFlag()); // self-employed

            //homeAlternative.AddUtilityTerm(42, person.IsPartTimeWorker.ToFlag());
            //homeAlternative.AddUtilityTerm(43, person.IsStudentAge.ToFlag());
            //homeAlternative.AddUtilityTerm(44, person.IsFemale.ToFlag());
            homeAlternative.AddUtilityTerm(90, 1);

            //make oddball alt unavailable and remove nesting for estimation of conditional MNL
            //            alternative.Available = false;
            homeAlternative.AddNestedAlternative(sampleSize + 3, 1, 98);
        }