public void ForeCast_SimpleTest()
{
// Arrange
ARIMAEngine2 engine = new ARIMAEngine2();
// Test data from http://www.extremeoptimization.com/QuickStart/CSharp/ArimaModels.aspx
var data = new double[] {
100.8, 81.6, 66.5, 34.8, 30.6, 7, 19.8, 92.5,
154.4, 125.9, 84.8, 68.1, 38.5, 22.8, 10.2, 24.1, 82.9,
132, 130.9, 118.1, 89.9, 66.6, 60, 46.9, 41, 21.3, 16,
6.4, 4.1, 6.8, 14.5, 34, 45, 43.1, 47.5, 42.2, 28.1, 10.1,
8.1, 2.5, 0, 1.4, 5, 12.2, 13.9, 35.4, 45.8, 41.1, 30.4,
23.9, 15.7, 6.6, 4, 1.8, 8.5, 16.6, 36.3, 49.7, 62.5, 67,
71, 47.8, 27.5, 8.5, 13.2, 56.9, 121.5, 138.3, 103.2,
85.8, 63.2, 36.8, 24.2, 10.7, 15, 40.1, 61.5, 98.5, 124.3,
95.9, 66.5, 64.5, 54.2, 39, 20.6, 6.7, 4.3, 22.8, 54.8,
93.8, 95.7, 77.2, 59.1, 44, 47, 30.5, 16.3, 7.3, 37.3,
73.9
};
// Act
var results = engine.ForeCast(data, 12);
// Assert
}
private static void Worker()
{
Thread.CurrentThread.Name = "Worker Thread";
DateTime lastUpdate = DateTime.MinValue;
CityParksClient parksClient = new CityParksClient();
ARIMAEngine2 engine = new ARIMAEngine2();
while (continueToWork)
{
var now = DateTime.Now;
if (now > lastUpdate.AddMinutes(frequencyInMinutes))
{
// Refresh Occupancy
var items = parksClient.GetCityParks().ToDictionary(k => k.Id ?? 666, k => k);
var parkingIds = items.Keys.ToArray();
var occupancy = items.Values.Select(cp => new Occupancy()
{
Date = now,
FreeSlots = cp.Actuel ?? 666,
Rate = (1.0 - (cp.Actuel ?? 666.0) / (cp.Total ?? 666.0)) * 100.0,
ParkingId = cp.Id ?? 666,
}).ToArray();
ParkOccupancyFactory factory = new ParkOccupancyFactory(new GameOfCode2016Entities());
factory.SaveOccupancy(occupancy);
Console.WriteLine("Saving Status");
// Forecast
DateTime dataStartDate = DateTime.Now.AddMonths(-1);
var forecasts = parkingIds.SelectMany(parkingId =>
{
var sourceData = factory.GetForecastsSince(dataStartDate, parkingId).Select(f => f.Rate).ToArray();
var occ = engine.ForeCast(sourceData, 2 * 60 / frequencyInMinutes); // 2 hours with 5min interval
var toSave = new List <Forecast>();
int count = 0;
foreach (double item in occ)
{
var rate = Math.Max(Math.Min(item, 100.0), 0);
count++;
toSave.Add(new Forecast()
{
Date = now.AddMinutes(frequencyInMinutes * count),
ParkingId = parkingId,
Rate = rate,
FreeSlots = (int)(items[parkingId].Total * (100 - rate) / 100),
});
}
return(toSave);
}).ToArray();
ParkOccupancyFactory factory2 = new ParkOccupancyFactory(new GameOfCode2016Entities());
factory2.SaveForecast(forecasts);
Console.WriteLine("Forecast saved");
lastUpdate = now;
}
Thread.Sleep(5000);
}
}
