private string[] GetRecommendations(List <int> topVisitorProducts, int numberOfRecommendations, string database)
{
Dictionary <int, double> recommendations = new Dictionary <int, double>();
foreach (int product in topVisitorProducts)
{
Dictionary <int, double> topProductRecommendation = _db.GetTopProductRecommendation(product, database).Result;
foreach (int recommendation in topProductRecommendation.Keys)
{
if (recommendations.Keys.Contains(recommendation))
{
recommendations[recommendation] += topProductRecommendation[recommendation];
}
else
{
recommendations.Add(recommendation, topProductRecommendation[recommendation]);
}
}
}
Dictionary <int, double> finalRecommendation = SortRecommendation(recommendations);
if (finalRecommendation.Count < numberOfRecommendations)
{
finalRecommendation = FillFromDefault(finalRecommendation, database, numberOfRecommendations);
if (finalRecommendation.Count < numberOfRecommendations)
{
numberOfRecommendations = finalRecommendation.Count;
}
}
string[] finalResult = new string[numberOfRecommendations];
for (int i = 0; i < numberOfRecommendations; i++)
{
finalResult[i] = finalRecommendation.Keys.ElementAt(i).ToString();
}
return(finalResult);
}
