public ActionResult ReglasDeAsociacion()
{
var lista = new List <ReglaAsociacion>();
String[] listaWS;
listaWS = serviciosWeb.reglasAsociacion();
Char delimiter = '/';
for (int i = 0; i < listaWS.Length; i++)
{
var regla = new ReglaAsociacion();
String[] substrings = listaWS[i].Split(delimiter);
regla.NumeroPremisa = (i + 1).ToString();
regla.Premisa = substrings[0];
regla.Conclusion = substrings[1];
regla.Confianza = substrings[2];
lista.Add(regla);
}
Session["Producto1"] = lista[0].Premisa.ToString();
Session["Producto2"] = lista[0].Conclusion.ToString();
return(View(lista));
}
public static List <ReglaAsociacion> ReglasAsociacion(List <List <string> > db, List <List <string> > L, double confidenceThreshold)
{
List <ReglaAsociacion> allRules = new List <ReglaAsociacion>();
foreach (List <string> itemset in L)
{
var subsets = GetPowerSet(itemset);
foreach (var subset in subsets)
{
double confidence = (FindSupport(itemset, db) / FindSupport(subset.ToList(), db)) * 100.0;
if (confidence >= confidenceThreshold)
{
ReglaAsociacion rule = new ReglaAsociacion();
string[] temp = new string[itemset.Count];
itemset.CopyTo(temp);
List <string> itemset2 = temp.ToList();
rule.X.AddRange(subset);
subset.ToList().ForEach(x => itemset2.Remove(x));
rule.Y.AddRange(itemset2);
rule.Support = FindSupport(itemset, db);
rule.Confidence = confidence;
if (rule.X.Count > 0 && rule.Y.Count > 0)
{
allRules.Add(rule);
}
}
}
}
return(allRules);
}
public String convertRules(ReglaAsociacion rule)
{
String line = "";
var ant = rule.X;
var con = rule.Y;
ant.ForEach(x => line += listItems.First(p => p.itemCode == Convert.ToInt32(x)).itemName + ",");
line += "-";
con.ForEach(y => line += listItems.First(p => p.itemCode == Convert.ToInt32(y)).itemName + ",");
return(line);
}
