public SplitsRepartitionOptimizer(List <Data.Split> splits,
int fieldSize,
List <int> carClassesIds, List <ClassCarsQueue> carclasses,
ClassicAffineDistribution algo)
{
this.Splits = splits;
this.fieldSize = fieldSize;
this.carClassesIds = carClassesIds;
this.carclasses = carclasses;
this.algo = algo;
}
/// <summary>
/// Helper to calc Cars to get
/// </summary>
/// <param name="split">the split</param>
/// <param name="classId">the class id you want to fill</param>
/// <param name="exceptionClassId">the class ids which are not (or not allowed) in this split</param>
/// <param name="fieldSizeOrLimit">the available slots count to fill (with every splits)</param>
/// <returns>the number of cars to get, which is the part of 'fieldSizeOrLimit' corresponding the the classId</returns>
internal virtual int TakeCars(List <Split> splits, Split split, int classId, List <int> exceptionClassId, int fieldSizeOrLimit)
{
if (exceptionClassId == null)
{
exceptionClassId = new List <int>();
}
List <int> classesToSelect = new List <int>();
Dictionary <int, int> classesRemaining = new Dictionary <int, int>();
foreach (int id in carClassesIds)
{
if (!exceptionClassId.Contains(id))
{
classesToSelect.Add(id);
classesRemaining.Add(id, 1);
}
}
ClassicAffineDistribution algo = baseAlgorithm as ClassicAffineDistribution;
return(algo.TakeClassCars(fieldSizeOrLimit, classesToSelect.Count, classesRemaining, classId, null, split.Number));
}
public void Compute(List <Line> data, int fieldSize)
{
if (ParameterDebugFileValue == 1)
{
PredictionsEvaluator.CleanOldDebugFiles();
}
minCarsToHalfSplits = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(ParameterMinCarsValue) / 2d));
// Calc number of splits required
// And try to reduce fieldSize, if possible, for the same number of splits
numberOfSplits = Tools.DivideAndCeil(data.Count, fieldSize);
int betterFieldSize = Tools.DivideAndCeil(data.Count, numberOfSplits);
this.fieldSize = Math.Min(fieldSize, betterFieldSize);
// create classes queues
classesQueues = Tools.SplitCarsPerClass(data);
classesIds = (from r in classesQueues select r.CarClassId).ToList();
// instanciate an ClassicAffineDistributio algorithm to use its car distribution system
affineDistributor = new ClassicAffineDistribution();
affineDistributor.ParameterMinCarsValue = this.ParameterMinCarsValue;
affineDistributor.SetFieldSize(fieldSize);
affineDistributor.InitData(classesIds, data);
if (classesQueues.Count == 1)
{
// if only one class, the affinedistributor will do the job
affineDistributor.Compute(data, fieldSize);
Splits = affineDistributor.Splits;
return;
}
// Starting the process
Splits = new List <Split>();
// this variable will contain the SoF Max of the 'Most Populated Class' of the last split
// it will be given to the next one to help evaluating possible situations
int prevMaxPopSof = -1;
// for each split required
for (int i = 0; i < numberOfSplits; i++)
{
// call the prediction algorithm, and get the best situation
var prediction = ComputeFieldPredictionsAndKeepTheBest(i, prevMaxPopSof);
// if something is possible
if (prediction != null)
{
// Create the split, for true.
Implement(prediction);
// remember the Max SoF of the 'Most Populated Class'
prevMaxPopSof = prediction.CurrentSplit.GetMaxClassSof();
}
}
// create the last split ...
var lastsplit = Splits.Last();
// by checking any class queues
for (int i = 0; i < classesQueues.Count; i++)
{
// if any cars are still in the queue
var cars = classesQueues[i].PickCars(classesQueues[i].CarsCount);
if (cars.Count > 0)
{
// put them in this last split
if (lastsplit.GetClassId(i) == 0)
{
lastsplit.SetClass(i, classesIds[i]);
}
lastsplit.AppendClassCars(i, cars);
}
}
// call the optimizer process (second pass algorithm) for
// rounding cars number between splits, or fix some issue
// if some splits exceed the fieldsize
classesQueues = Tools.SplitCarsPerClass(data);
SplitsRepartitionOptimizer optimizer = new SplitsRepartitionOptimizer(Splits,
fieldSize,
classesIds,
classesQueues,
affineDistributor);
Splits = optimizer.OptimizeAndSolveDifferences(); // now we have the final result
}