//TODO fix this
private static double[] GetTopXAmountOfRatings(int amountOfRatings, KeyValueObject[] nearestNeighbours,
Dictionary <int, Dictionary <int, double> > dictionary)
{
var uniqueItemIds = new List <int>();
foreach (var neighbour in nearestNeighbours)
{
var ids = dictionary[neighbour.Key].Keys.ToArray();
for (int i = 0; i < ids.Length; i++)
{
if (!uniqueItemIds.Contains(ids[i]))
{
uniqueItemIds.Add(ids[i]);
}
}
}
var bestRatings = new List <double>();
for (int i = 0; i < uniqueItemIds.Count; i++)
{
PredictedRatingCalculations predictedRatingCalculations = new PredictedRatingCalculations();
var predictedRating = predictedRatingCalculations.CalculatePredictedRating(uniqueItemIds[i], nearestNeighbours, dictionary);
bestRatings.Add(predictedRating);
}
return(bestRatings.OrderByDescending(x => x).Take(amountOfRatings).ToArray());
}
private void Act()
{
// Act
PredictedRatingCalculations predictedRatingCalculations = new PredictedRatingCalculations();
var result = predictedRatingCalculations.CalculatePredictedRating(3, _nearestNeigbours, _ratings);
_result = Math.Round(result, 3);
}