public double CalcDisctance(Neighbour n)
{
double distance = 0;
for (int i = 0; i < points.Count; i++)
{
distance += Math.Pow(this.points[i] - n.points[i], 2);
}
return(distance);
}
static void Main(string[] args)
{
Console.WriteLine("Podaj k:");
var k = int.Parse(Console.ReadLine());
string[] trainingContent = File.ReadAllLines("iris_training.txt");
string[] testContent = File.ReadAllLines("iris_test.txt");
var training = new List <Neighbour>();
var test = new List <Neighbour>();
for (int i = 0; i < trainingContent.Length; i++)
{
training.Add(new Neighbour(trainingContent[i], true));
}
for (int i = 0; i < testContent.Length; i++)
{
test.Add(new Neighbour(testContent[i], true));
}
int correct = 0;
foreach (var t in test)
{
var distances = new List <Tuple <string, double> >();
foreach (var n in training)
{
distances.Add(new Tuple <string, double>(n.type, t.CalcDisctance(n)));
}
distances = distances.OrderBy(t => t.Item2).ToList();
var kNearest = new Dictionary <string, int>();
for (int i = 0; i < k; i++)
{
if (kNearest.ContainsKey(distances[i].Item1))
{
kNearest[distances[i].Item1]++;
}
else
{
kNearest[distances[i].Item1] = 1;
}
}
string pickedType = kNearest.OrderByDescending(k => k.Value).First().Key;
int count = kNearest.OrderByDescending(k => k.Value).First().Value;
if (pickedType.Equals(t.type))
{
correct++;
}
}
double percentage = correct / (double)test.Count * 100;
Console.WriteLine($"Poprawnie dobrano {correct} objektów, co daje {percentage}%");
Console.WriteLine("Czy chcesz wprowadzić dane? (Y/N):");
string answer = Console.ReadLine().ToLower().Trim();
bool loop = answer.Equals("y");
while (loop)
{
Neighbour n = new Neighbour(Console.ReadLine(), false);
var distances = new List <Tuple <string, double> >();
foreach (var t in training)
{
distances.Add(new Tuple <string, double>(t.type, t.CalcDisctance(n)));
}
var kNearest = new Dictionary <string, int>();
for (int i = 0; i < k; i++)
{
if (kNearest.ContainsKey(distances[i].Item1))
{
kNearest[distances[i].Item1]++;
}
else
{
kNearest[distances[i].Item1] = 1;
}
}
string pickedType = kNearest.OrderByDescending(k => k.Value).First().Key;
int count = kNearest.OrderByDescending(k => k.Value).First().Value;
Console.WriteLine($"Podany typ to {pickedType}");
Console.WriteLine("Czy chcesz wprowadzić dane? (Y/N):");
answer = Console.ReadLine().ToLower().Trim();
loop = answer.Equals("y");
}
}
