/// <summary>
/// This method evalutes trending data based on demand supply variant
/// </summary>
/// <typeparam name="T">T represents generic class, user model which extends the TDemandSupplyModel</typeparam>
/// <param name="windowPeriod">Window Period to consider for bucketing your input data. E.g. Last 6 months data means window period is 6</param>
/// <param name="numberOfSegmentsOfEachUnit">Number of segments in each window unit. E.g. each window is divided into 2 buckets</param>
/// <param name="listOfModels">List of TModel containing the input list of data used for finding trending data</param>
/// <returns></returns>
public IEnumerable <T> FindTrendingData <T>(int windowPeriod, int numberOfSegmentsOfEachUnit, List <T> listOfModels) where T : TDemandSupplyModel
{
var validationMessage = IsInputDataValid(windowPeriod, numberOfSegmentsOfEachUnit, listOfModels.ConvertAll(x => (TModel)x));
if (!string.IsNullOrWhiteSpace(validationMessage))
{
throw new ArgumentNullException(validationMessage);
}
validationMessage = IsCountWithPeriodsDataValid(windowPeriod, numberOfSegmentsOfEachUnit, listOfModels.ConvertAll(x => (TModel)x));
if (!string.IsNullOrWhiteSpace(validationMessage))
{
throw new ArgumentException(validationMessage);
}
AbstractTrendingCalculator baseCalculator = new DemandSupplyTrendingCalculator();
var trendingModels = baseCalculator.CalculateTrending(windowPeriod, numberOfSegmentsOfEachUnit, listOfModels);
var result = (baseCalculator as DemandSupplyTrendingCalculator).GetSortedCombinedResult(trendingModels);
var processedModel = new List <(T item, double localZ, double globalZ)>();
foreach (var model in result)
{
processedModel.Add((model.item, model.localZ, model.globalZ));
}
return(baseCalculator.PostProcessZScore <T>(processedModel).Select(x => x.item));
}
public void TestTrendingCalculatorDemandSupplyCriteria_ShouldRunSuccessfully_Suite2()
{
var trendingStrategy = new DemandSupplyTrendingCalculator();
var inputData = DataPreparator.PrepareDemandData_Suite2();
var output = trendingStrategy.CalculateTrending(6, 1, inputData);
Assert.AreEqual("ABC", output[1].First().item.MovieName);
Assert.AreEqual("PQR", output.Last().First().item.MovieName);
}
