public void ChooseTruckCandidateWithLowerAccidentProbability()
{
// Estimation on bad weather condition
const bool goodWeather = false;
DemoLogger.InfLog("Create fleet ...");
_fleet = DemoFleetDataFactory.CreateRandomFleet(3);
PopulateWithEvents();
// Get results
DemoLogger.InfLog("Estimate the probability to have an accident:");
var rank = new Dictionary <Guid, double>();
_fleet.ForEach(truck =>
{
// Trigger internal model updating
truck.UpdateStats();
var prediction = truck.PredictAccident(goodWeather);
var prob = prediction.Probabilities.ToList();
DemoLogger.InfLog($"Truck {truck.ModelCode}: {prob[0].Label}-> {prob[0].ProbabilityScore:P}, " +
$"{prob[1].Label}-> {prob[1].ProbabilityScore:P}");
rank.Add(truck.Id, prob[1].ProbabilityScore);
});
var candidateId = rank.OrderBy(c => c.Value).First().Key;
var candidate = _fleet.Find(f => f.Id.Equals(candidateId));
DemoLogger.InfLog($"Best truck: {candidate}");
}
private void AddFleetDemoHistory()
{
var c = 0;
foreach (var transportTruck in _fleet)
{
var journeys = DemoFleetDataFactory.ReadNextJourneyHistory(c++);
foreach (var journey in journeys)
{
transportTruck.Departure(
journey.DepartureLocation,
0,
journey.WeatherCode,
WeatherServiceFacade.IsGoodWeather(journey.WeatherCode),
journey.DepartureTime);
transportTruck.Arrival(
journey.ArrivalLocation,
journey.FatigueScore,
journey.WeatherCode,
WeatherServiceFacade.IsGoodWeather(journey.WeatherCode),
journey.ArrivalTime,
journey.Accident,
journey.Delay
);
}
}
}
public void OptimizeAndAssignTrips()
{
DemoLogger.InfLog("Create fleet ...");
_fleet = DemoFleetDataFactory.CreateRandomFleet(6);
// Create Csp data problem from current fleet status
var cspData = FleetCsp.FleetToCspModel(DemoFleetDataFactory.CreateCspProblemVariables().ToList(), _fleet);
// Instantiate Csp-Model
var fleetCsp = CspFactory.Create(
new Dictionary <string, IEnumerable <TruckCspValue> >(cspData.Select(v => new KeyValuePair <string, IEnumerable <TruckCspValue> >(v.Key, v.Value.Domains))),
new Dictionary <string, IEnumerable <string> >(cspData.Select(v => new KeyValuePair <string, IEnumerable <string> >(v.Key, v.Value.Relations))),
new Func <string, TruckCspValue, string, TruckCspValue, bool>[]
{
// Constraint: Do not overlap on the same day
(variableA, transportTruckA, variableB, transportTruckB) =>
{
var dayA = variableA.Split('.').First();
var dayB = variableB.Split('.').First();
return(dayA != dayB || transportTruckA != transportTruckB);
},
// Avoid commitment on Monday and Tuesday
(variableA, transportTruckA, variableB, transportTruckB) =>
{
var dayA = variableA.Split('.').First();
var dayB = variableB.Split('.').First();
if (
string.Compare(dayA, "mon", StringComparison.OrdinalIgnoreCase) == 0 &&
string.Compare(dayB, "tue", StringComparison.OrdinalIgnoreCase) == 0 ||
string.Compare(dayA, "tue", StringComparison.OrdinalIgnoreCase) == 0 &&
string.Compare(dayB, "mon", StringComparison.OrdinalIgnoreCase) == 0
)
{
return(transportTruckA != transportTruckB);
}
return(true);
}
});
// Resolve the given problem
var solved = fleetCsp.UseBackTrackingSearchResolver(
SelectUnassignedVariableStrategyTypes <TruckCspValue> .FirstUnassignedVariable,
DomainValuesOrderingStrategyTypes <TruckCspValue> .DomainCustomOrder)
.Resolve(() =>
{
PrintPlan(fleetCsp);
});
Assert.True(solved);
}
private void PrintPlan(Csp <TruckCspValue> model)
{
using var ms = new MemoryStream();
using var writer = new StreamWriter(ms);
var table = new ConsoleTable("Week Day", "Travel 1", "Travel 2", "Travel 3")
{
Options = { EnableCount = false, OutputTo = writer }
};
var travelsByDay = model.Status.GroupBy(k => DemoFleetDataFactory.DecodeDay(k.Key).ToUpper()).ToList();
foreach (var day in travelsByDay)
{
var cells = day.Select(i => $"{i.Key}: {i.Value.ModelCode}").Cast <object>().ToList();
cells.Insert(0, day.Key);
table.AddRow(cells.ToArray());
}
table.Write();
var trucks = model.Status.Values
.Select(m => m.ModelCode)
.Distinct()
.Select(code => (Code: code, Assignement: model.Status.Values.First(v => v.ModelCode.Equals(code)).Assigned));
foreach (var truck in trucks)
{
writer.WriteLine($"Truck: {truck.Code}, Total travels: {truck.Assignement}");
}
writer.Flush();
ms.Seek(0, SeekOrigin.Begin);
DemoLogger.InfLog(Environment.NewLine + Encoding.UTF8.GetString(ms.ToArray()));
}
