Example #1
0
        /// <summary>
        /// Runs the ModeChoice model on the given household
        /// </summary>
        /// <param name="h">The household to run on</param>
        public bool Run(ITashaHousehold h)
        {
            // Compute the error terms and feasibility of non shared modes
            ComputeErrorTerms(h);
            //there are no "trip chains" so return true
            for (int i = 0; i < this.HouseholdIterations; i++)
            {
                // To start with Generate the LogLikelyhoods
                if (i == 0)
                {
                    foreach (var person in h.Persons)
                    {
                        person.CalculateLoglikelihood();
                    }
                }
                else
                {
                    // on ever other one just update the utilities
                    h.UpdateUtilities();
                }

                ModeChoiceHousehold.ModeAssignmentHouseHold result = h.ResolveConflicts();

                //assign the best mode to each trip to prep for pass 3
                if (result == ModeChoiceHousehold.ModeAssignmentHouseHold.ADVANCED_CASE)
                {
                    List <ITripChain> l  = h.AllTripChains();
                    IVehicleType[]    vt = ModeChoiceHousehold.FindBestPossibleAssignment(l, new List <IVehicle>(h.Vehicles));
                    if (vt != null)
                    {
                        AssignBestMode(h, vt);
                    }
                    else
                    {
                        // TODO: should assign best possible vehicle even if
                        // someone cannot execute their tripchain since they can
                        // be passengers
                        return(false);
                    }
                }
                else if (result == ModeChoiceHousehold.ModeAssignmentHouseHold.SIMPLE_CASE)
                {
                    AssignBestMode(h);
                }
                else if (result == ModeChoiceHousehold.ModeAssignmentHouseHold.NULL_SET)
                {
                    ReleaseModeSets(h);
                    return(false);
                }

                //pass 3
                h.MultiPersonMode();

                //finally store it to the list of "generated" realities
                DoAssignment(h, i);
            }
            ReleaseModeSets(h);
            return(true);
        }
Example #2
0
 /// <summary>
 /// Assigns the best mode to each trip in the trip chain for use in pass 3. (No Conflict Vers.)
 /// </summary>
 /// <param name="household"></param>
 private void AssignBestMode(ITashaHousehold household)
 {
     foreach (var person in household.Persons)
     {
         foreach (var tripChain in person.TripChains)
         {
             ModeSet[] tripset = (ModeSet[])tripChain["BestForVehicle"];
             ModeSet   bestSet;
             var       trips = tripChain.Trips;
             if ((bestSet = tripset[ModeChoiceHousehold.BestVehicle(tripset)]) != null)
             {
                 for (int i = 0; i < bestSet.Length; i++)
                 {
                     trips[i].Mode = bestSet.ChosenMode[i];
                 }
             }
         }
     }
 }