public static void DoDataMining()
{
string path = @"Transactions.txt";
string[] records = File.ReadAllLines(path);
List <string> referenceItems = new List <string>
{
"kawa", "mleko", "cukier",
"orzechy", "jajka", "chleb",
"maslo", "miod", "platki", "ser"
};
TransactionSet <string> transactions = new TransactionSet <string>(referenceItems);
List <string> tempList = new List <string>();
foreach (var record in records)
{
string[] fields = record.Split('\t');
foreach (var field in fields)
{
tempList.Add(field);
}
transactions.Add(tempList);
tempList.Clear();
}
Console.WriteLine("Cwiczenie 2: Eksploracja danych");
int choice;
string line = "";
do
{
Printers.ShowDataMiningMenu();
line = Console.ReadLine();
Console.Clear();
Int32.TryParse(line, out choice);
switch (choice)
{
case 1:
transactions.Print();
break;
case 2:
foreach (var item in referenceItems)
{
Console.WriteLine("Przedmiot: {0,10} | {1:P2}", item, transactions.Support(item));
}
break;
case 3:
double thold;
Console.Write("Próg (ułamek ','): ");
Double.TryParse(Console.ReadLine(), out thold);
var frequentELements = transactions.Frequent(thold);
foreach (var item in frequentELements)
{
Console.WriteLine("Przedmiot: {0,10} | {1:P2}", item, transactions.Support(item));
}
break;
case 4:
Console.Write("Przedmiot 1: ");
string item1 = Console.ReadLine();
Console.Write("Przedmiot 2: ");
string item2 = Console.ReadLine();
double orCond = transactions.ConditionSupportOr(item1, item2);
Console.WriteLine("Przedmiot 1: {0}, Przedmiot 2: {1}, Wsparcie warunkowe: {2:P2}", item1, item2, orCond);
break;
case 5:
Console.Write("Przedmiot 1: ");
item1 = Console.ReadLine();
Console.Write("Przedmiot 2: ");
item2 = Console.ReadLine();
Console.WriteLine("{0} -> {1} {2:P2}", item1, item2, transactions.ConditionConfidence(item1, item2));
break;
case 6:
Console.Write("Próg (ułamek ','): ");
Double.TryParse(Console.ReadLine(), out thold);
foreach (var it1 in referenceItems)
{
foreach (var it2 in referenceItems)
{
if (it1 == it2)
{
continue;
}
else
{
double or = transactions.ConditionSupportOr(it1, it2);
double conf = transactions.ConditionConfidence(it1, it2);
if (or >= thold && conf >= thold)
{
Console.WriteLine("{0} -> {1} ({2:P2},{3:P2})", it1, it2, or, conf);
}
}
}
}
break;
case 7:
var EquivalenceClass = transactions.EquivalenceClassTransformation();
foreach (var eq in EquivalenceClass.Select((value, index) => new { value, index }))
{
Console.Write("\n{0,10}\t|", transactions.ReferenceListOfItems[eq.index]);
foreach (var e in eq.value)
{
Console.Write("\t{0}\t|", e);
}
}
Console.WriteLine();
break;
default:
break;
}
if (line == "q")
{
Environment.Exit(0);
}
} while (!String.IsNullOrWhiteSpace(line));
}
