public static void CalculateDeltaPopulationFromDummyData(TravelContext dbContext)
{
dbContext.DeltaPopulations.RemoveRange(dbContext.DeltaPopulations.Where(x => x.IsPredicted == false));
dbContext.SaveChanges();
List <DestinationAggregation> destinationList = dbContext.DestinationAggregations.ToList();
List <OrignAggregation> originList = dbContext.OrignAggregations.ToList();
List <DeltaPopulation> currentPopulationList = dbContext.DeltaPopulations.ToList();
foreach (DestinationAggregation da in destinationList)
{
var match = originList.Find(oa => da.Destination == oa.Origin && da.Year == oa.Year && da.Month == oa.Month);
if (match != null)
{
DeltaPopulation delta = new DeltaPopulation();
delta.Place = da.Destination;
delta.DeltaCount = da.Count - match.Count;
delta.Year = da.Year;
delta.Month = da.Month;
dbContext.Add(delta);
}
else
{
DeltaPopulation delta = new DeltaPopulation();
delta.Place = da.Destination;
delta.DeltaCount = da.Count;
delta.Year = da.Year;
delta.Month = da.Month;
dbContext.Add(delta);
}
}
dbContext.SaveChanges();
}
public static void CalculateDeltaPopulationFromDummyData(TravelContext dbContext)
{
dbContext.DeltaPopulations.RemoveRange(dbContext.DeltaPopulations.Where(x => x.IsPredicted == false));
dbContext.SaveChanges();
List <DestinationAggregation> destinationList = dbContext.DestinationAggregations.ToList();
List <OrignAggregation> originList = dbContext.OrignAggregations.ToList();
List <DeltaPopulation> currentPopulationList = dbContext.DeltaPopulations.ToList();
foreach (DestinationAggregation da in destinationList)
{
var match = originList.Find(oa => da.Destination == oa.Origin && da.Year == oa.Year && da.Month == oa.Month);
DeltaPopulation delta = null;
if (match != null)
{
delta = new DeltaPopulation();
delta.Place = da.Destination;
delta.DeltaCount = da.Count - match.Count;
delta.Year = da.Year;
delta.Month = da.Month;
}
else
{
delta = new DeltaPopulation();
delta.Place = da.Destination;
delta.DeltaCount = da.Count;
delta.Year = da.Year;
delta.Month = da.Month;
}
var cityPopulation = avgPopulations.Where(i => i.City == da.Destination).SingleOrDefault();
if (cityPopulation != null)
{
var yearAvg = cityPopulation.Avg.Where(i => i.Year == da.Year).FirstOrDefault();
if (yearAvg != null)
{
delta.DeltaCount += yearAvg?.Month;
}
}
dbContext.Add(delta);
}
dbContext.SaveChanges();
}
public static async Task PredictMigrationPopulation(TravelContext dbContext)
{
List <DeltaPopulation> currentPopulationList = dbContext.DeltaPopulations.ToList();
List <string> places = (from deltaRecord in currentPopulationList
select deltaRecord.Place).Distinct().ToList();
StringTable inpuToMLService = new StringTable();
inpuToMLService.Values = new string[places.Count * 36, 3];
int rowIndex = 0;
foreach (string place in places)
{
for (int i = 1; i <= 36; i++)
{
inpuToMLService.Values.SetValue(place.TrimStart(), rowIndex, 0);
inpuToMLService.Values.SetValue(DateTime.Today.AddMonths(i).Year.ToString(), rowIndex, 1);
inpuToMLService.Values.SetValue(DateTime.Today.AddMonths(i).Month.ToString(), rowIndex, 2);
rowIndex += 1;
}
}
using (var client = new HttpClient())
{
var scoreRequest = new
{
Inputs = new Dictionary <string, StringTable>()
{
{
"input1",
new StringTable()
{
ColumnNames = new string[] { "Place", "Year", "Month" },
Values = inpuToMLService.Values
}
},
},
GlobalParameters = new Dictionary <string, string>()
{
{ "Append score columns to output", "True" },
}
};
string apiUrl = null;
string apiKey = null;
apiUrl = ConfigurationManager.AppSettings["LinerRegressionAPI"];
apiKey = ConfigurationManager.AppSettings["LinerRegressionKey"];
if (!bool.Parse(ConfigurationManager.AppSettings["UseLinerRegressionAlgorithm"]))
{
apiUrl = ConfigurationManager.AppSettings["BoostedDecisionTreeRegressionAPI"];
apiKey = ConfigurationManager.AppSettings["BoostedDecisionTreeRegressionKey"];
}
client.BaseAddress = new Uri(apiUrl + "&details=true");
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", apiKey);
HttpResponseMessage response = await client.PostAsJsonAsync("", scoreRequest);
if (response.IsSuccessStatusCode)
{
dbContext.DeltaPopulations.RemoveRange(dbContext.DeltaPopulations.Where(x => x.IsPredicted == true));
dbContext.SaveChanges();
string jsonRequest = await response.Content.ReadAsStringAsync();
RootObject mlResponse = JsonConvert.DeserializeObject <RootObject>(jsonRequest);
List <List <string> > predictedrecords = mlResponse.Results.output1.value.Values;
foreach (List <string> predictedRecord in predictedrecords)
{
DeltaPopulation prediction = new DeltaPopulation();
prediction.Place = predictedRecord[0].TrimStart();
prediction.Year = Int32.Parse(predictedRecord[1]);
prediction.Month = Int32.Parse(predictedRecord[2]);
prediction.DeltaCount = (int)decimal.Parse(predictedRecord[3]);
prediction.IsPredicted = true;
dbContext.Add(prediction);
}
dbContext.SaveChanges();
}
else
{
Console.WriteLine(string.Format("The request failed with status code: {0}", response.StatusCode));
// Print the headers - they include the requert ID and the timestamp, which are useful for debugging the failure
Console.WriteLine(response.Headers.ToString());
string responseContent = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseContent);
}
}
}
