public string knn(DataTable tbl)
{
Codification codebook = new Codification(tbl);
DataTable symbols = codebook.Apply(tbl);
double[][] inputs = symbols.ToIntArray("Clump Thickness", "Uniformity of Cell Size", "Uniformity of Cell Shape", "Marginal Adhesion", "Single Epithelial Cell Size", "Bare Nuclei", "Bland Chromatin", "Normal Nucleoli", "Mitoses").ToDouble();
int sayac = 0;
int[] outputs = symbols.ToIntArray("Class").GetColumn(0);
KNearestNeighbors knn = new KNearestNeighbors(k: 4, classes: 2,
inputs: inputs, outputs: outputs);
int answer = knn.Compute(new double[] { Convert.ToInt32(inputlar[0]), Convert.ToInt32(inputlar[1]),
Convert.ToInt32(inputlar[2]), Convert.ToInt32(inputlar[3]), Convert.ToInt32(inputlar[4]),
Convert.ToInt32(inputlar[5]), Convert.ToInt32(inputlar[6]), Convert.ToInt32(inputlar[7]), Convert.ToInt32(inputlar[8]) }); // answer will be 2.
if (answer == 0)
{
answer = 4;
}
else
{
answer = 2;
}
return(answer.ToString());
}
public string predict(string p1, string p2, string p3, string p4, string p5, string p6, string p7, string p8, string p9)
{
SqlCommand cmd = new SqlCommand();
cmd.CommandText = "select * from Dataset_tbl";
DataTable dt = db.get(cmd);
//Codification codebook = new Codification(ds.Tables[0], "Par1", "Par2", "Par3", "Par4", "Par5", "Par6", "Par7", "Par8", "Par9", "Par10", "Par11", "Par12", "Par13", "Par14", "Par15", "Par16", "Par17", "Par18", "Par19", "Par20", "Par21", "Res");
Codification codebook = new Codification(dt, "p1", "p2", "p3", "p4", "p5", "p6", "result");
//DataTable symbols = codebook.Apply(ds.Tables[0]);
DataTable symbols = codebook.Apply(dt);
double[][] inputs = symbols.ToArray <double>("p1", "p2", "p3", "p4", "p5", "p6");
int[] outputs = symbols.ToArray <int>("result");
int K = 1;
try
{
int[] sample = codebook.Translate(p1, p2, p3, p4, p5, p6);
//int[] sample = new int[] { int.Parse(p1), int.Parse(p2), int.Parse(p3) };
int classCount = 1; // 3 possible output values
KNearestNeighbors knn = new KNearestNeighbors(k: K, classes: 2, inputs: inputs, outputs: outputs);
double[] doubleArray = Array.ConvertAll(sample, x => (double)x);
answer = codebook.Translate("result", knn.Compute(doubleArray));
}
catch
{
answer = "Nill";
}
return(answer);
}
public void Run()
{
// The k-Nearest Neighbors algorithm can be used with
// any kind of data. In this example, we will see how
// it can be used to compare, for example, Strings.
string[] inputs =
{
"Car", // class 0
"Bar", // class 0
"Jar", // class 0
"Charm", // class 1
"Chair" // class 1
};
int[] outputs =
{
0, 0, 0, // First three are from class 0
1, 1, // And next two are from class 1
};
// Now we will create the K-Nearest Neighbors algorithm. For this
// example, we will be choosing k = 1. This means that, for a given
// instance, only its nearest neighbor will be used to cast a new
// decision.
// In order to compare strings, we will be using Levenshtein's string distance
KNearestNeighbors<string> knn = new KNearestNeighbors<string>(k: 1, classes: 2,
inputs: inputs, outputs: outputs, distance: Distance.Levenshtein);
// After the algorithm has been created, we can use it:
int answer = knn.Compute("Chars"); // answer should be 1.
}
private static void meh()
{
string[] delimiters = { "," };
string[] fields;
TextFieldParser tfp;
tfp = new TextFieldParser("");
tfp.HasFieldsEnclosedInQuotes = true;
tfp.Delimiters = delimiters;
while (!tfp.EndOfData)
{
fields = tfp.ReadFields();
}
tfp.Close();
// The k-Nearest Neighbors algorithm can be used with
// any kind of data. In this example, we will see how
// it can be used to compare, for example, Strings.
string[] inputs =
{
"Car", // class 0
"Bar", // class 0
"Jar", // class 0
"Charm", // class 1
"Chair" // class 1
};
int[] outputs =
{
0, 0, 0, // First three are from class 0
1, 1, // And next two are from class 1
};
// Now we will create the K-Nearest Neighbors algorithm. For this
// example, we will be choosing k = 1. This means that, for a given
// instance, only its nearest neighbor will be used to cast a new
// decision.
// In order to compare strings, we will be using Levenshtein's string distance
KNearestNeighbors <string> knn = new KNearestNeighbors <string>(k: 1, classes: 2,
inputs: inputs, outputs: outputs, distance: Distance.Levenshtein);
// After the algorithm has been created, we can use it:
int answer = knn.Compute("Chars"); // answer should be 1.
}
public LasPoint.ClassificationType[] Classify(LasFile file)
{
var sw = Stopwatch.StartNew();
LasPointDataRecords points = file.LasPointDataRecords;
int pointsCount = points.Count();
LasPoint.ClassificationType[] output = new LasPoint.ClassificationType[pointsCount];
Statistics stats = new Statistics();
stats.Count = pointsCount;
OpenTK.Vector3[] slopeVector = new OpenTK.Vector3[pointsCount];
Parallel.For(0, pointsCount, (i) =>
{
slopeVector[i] = LinearRegression.ComputeRegressionPoint(file, points[i], regressionCount, regressionRange);
if (i % 1000 == 0)
{
Console.WriteLine("ComputeRegression " + i);
}
});
for (int i = 0; i < pointsCount; i++)
{
LasPoint3Short point = (LasPoint3Short)points[i];
double distanceFromPlane = Utills.DistanceFromPlane(point, slopeVector[i]);
double green = point.Green - (point.Red + point.Blue) / 2;
output[i] = Utills.ClassificationClasses[knn.Compute(new double[] { green,
file.LasHeader.ScaleZ(point.Z), point.Intensity, slopeVector[i].X,
slopeVector[i].Y, slopeVector[i].Z, distanceFromPlane })];
if (output[i] != points[i].Classification)
{
stats.ClassErrors[(int)points[i].Classification]++;
}
stats.ClassCount[(int)output[i]]++;
stats.ClassRealCount[(int)points[i].Classification]++;
stats.PredictionMatrix[(int)points[i].Classification, (int)output[i]]++;
if (i % 1000 == 0)
{
Console.WriteLine(i);
}
}
Console.Write(stats.ToString());
sw.Stop();
Console.WriteLine("Czas trwania [" + sw.Elapsed.TotalSeconds.ToString() + "s]");
stats.SaveMatrixAsCSV();
return(output);
}
public void KNearestNeighborConstructorTest2()
{
// Create some sample learning data. In this data,
// the first two instances belong to a class, the
// four next belong to another class and the last
// three to yet another.
double[][] inputs =
{
// The first two are from class 0
new double[] { -5, -2, -1 },
new double[] { -5, -5, -6 },
// The next four are from class 1
new double[] { 2, 1, 1 },
new double[] { 1, 1, 2 },
new double[] { 1, 2, 2 },
new double[] { 3, 1, 2 },
// The last three are from class 2
new double[] { 11, 5, 4 },
new double[] { 15, 5, 6 },
new double[] { 10, 5, 6 },
};
int[] outputs =
{
0, 0, // First two from class 0
1, 1, 1, 1, // Next four from class 1
2, 2, 2 // Last three from class 2
};
// Now we will create the K-Nearest Neighbors algorithm. For this
// example, we will be choosing k = 4. This means that, for a given
// instance, its nearest 4 neighbors will be used to cast a decision.
KNearestNeighbors knn = new KNearestNeighbors(k: 4, classes: 3,
inputs: inputs, outputs: outputs);
// After the algorithm has been created, we can classify a new instance:
int answer = knn.Compute(new double[] { 11, 5, 4 }); // answer will be 2.
Assert.AreEqual(2, answer);
}
public override ConfusionMatrix Execute()
{
//Create a knn classifer with 2 classes
var knn = new KNearestNeighbors(k: k,
classes: 2,
inputs: trainingSet,
outputs: trainingOutput);
//Map the classifier over the test set
//This wil return an array where index i is the classificatioon of the i-th vector
//of the testSet
var predicted = AlgorithmHelpers
.MergeArrays(trainingSet, testSet)
.Select(x => knn.Compute(x))
.ToArray();
//Create a new confusion matrix with the calculated parameters
var cmatrix = new ConfusionMatrix(predicted, AlgorithmHelpers.MergeArrays(trainingOutput, expected), POSITIVE, NEGATIVE);
return cmatrix;
}
public void Run()
{
// Create some sample learning data. In this data,
// the first two instances belong to a class, the
// four next belong to another class and the last
// three to yet another.
double[][] inputs =
{
// The first two are from class 0
new double[] { -5, -2, -1 },
new double[] { -5, -5, -6 },
// The next four are from class 1
new double[] { 2, 1, 1 },
new double[] { 1, 1, 2 },
new double[] { 1, 2, 2 },
new double[] { 3, 1, 2 },
// The last three are from class 2
new double[] { 11, 5, 4 },
new double[] { 15, 5, 6 },
new double[] { 10, 5, 6 },
};
int[] outputs =
{
0, 0, // First two from class 0
1, 1, 1, 1, // Next four from class 1
2, 2, 2 // Last three from class 2
};
// Now we will create the K-Nearest Neighbors algorithm. For this
// example, we will be choosing k = 4. This means that, for a given
// instance, its nearest 4 neighbors will be used to cast a decision.
KNearestNeighbors knn = new KNearestNeighbors(k: 4, classes: 3,
inputs: inputs, outputs: outputs);
// After the algorithm has been created, we can classify a new instance:
int answer = knn.Compute(new double[] { 11, 5, 4 }); // answer will be 2.
}
public LasPoint.ClassificationType[] Classify(LasFile file)
{
var sw = Stopwatch.StartNew();
LasPointDataRecords points = file.LasPointDataRecords;
int pointsCount = points.Count();
LasPoint.ClassificationType[] output = new LasPoint.ClassificationType[pointsCount];
Statistics stats = new Statistics();
stats.Count = pointsCount;
for (int i = 0; i < pointsCount; i++)
{
LasPoint3Short point = (LasPoint3Short)points[i];
double green = point.Green - (point.Red + point.Blue) / 2;
output[i] = Utills.ClassificationClasses[knn.Compute(new double[] {
file.LasHeader.ScaleZ(point.Z), point.Intensity, green
})];
if (output[i] != points[i].Classification)
{
stats.ClassErrors[(int)points[i].Classification]++;
}
stats.ClassCount[(int)output[i]]++;
stats.ClassRealCount[(int)points[i].Classification]++;
stats.PredictionMatrix[(int)points[i].Classification, (int)output[i]]++;
if (i % 1000 == 0)
{
Console.WriteLine(i);
}
}
Console.Write(stats.ToString());
sw.Stop();
Console.WriteLine("Czas trwania [" + sw.Elapsed.TotalSeconds.ToString() + "s]");
stats.SaveMatrixAsCSV();
return(output);
}
public override ConfusionMatrix Execute()
{
//Create a knn classifer with 2 classes
var knn = new KNearestNeighbors(k: k,
classes: 2,
inputs: trainingSet,
outputs: trainingOutput);
//Map the classifier over the test set
//This wil return an array where index i is the classificatioon of the i-th vector
//of the testSet
var predicted = AlgorithmHelpers
.MergeArrays(trainingSet, testSet)
.Select(x => knn.Compute(x))
.ToArray();
//Create a new confusion matrix with the calculated parameters
var cmatrix = new ConfusionMatrix(predicted, AlgorithmHelpers.MergeArrays(trainingOutput, expected), POSITIVE, NEGATIVE);
return(cmatrix);
}
internal int test(Dictionary <string, double> docWordDic, Dictionary <string, int> dictionary, Dictionary <string, double> wordIDFDictionary)
{
double[] testFeature = new double[featureSize];
double docWordSum = 0;
for (int i = 0; i < featureSize; i++)
{
testFeature[i] = 0;
}
foreach (string word in docWordDic.Keys)
{
docWordSum += docWordDic[word];
}
foreach (string word in docWordDic.Keys)
{
if (dictionary.ContainsKey(word) && wordIDFDictionary.ContainsKey(word) && wordIDFDictionary[word] != 0)
{
testFeature[dictionary[word]] = (docWordDic[word] / docWordSum) * wordIDFDictionary[word];//TFIDF
}
}
return(knn.Compute(testFeature));
}
public void KNearestNeighborConstructorTest3()
{
// The k-Nearest Neighbors algorithm can be used with
// any kind of data. In this example, we will see how
// it can be used to compare, for example, Strings.
string[] inputs =
{
"Car", // class 0
"Bar", // class 0
"Jar", // class 0
"Charm", // class 1
"Chair" // class 1
};
int[] outputs =
{
0, 0, 0, // First three are from class 0
1, 1, // And next two are from class 1
};
// Now we will create the K-Nearest Neighbors algorithm. For this
// example, we will be choosing k = 1. This means that, for a given
// instance, only its nearest neighbor will be used to cast a new
// decision.
// In order to compare strings, we will be using Levenshtein's string distance
KNearestNeighbors <string> knn = new KNearestNeighbors <string>(k: 1, classes: 2,
inputs: inputs, outputs: outputs, distance: Distance.Levenshtein);
// After the algorithm has been created, we can use it:
int answer = knn.Compute("Chars"); // answer should be 1.
Assert.AreEqual(1, answer);
}
public string Classify(double[] image)
{
var answer = _knn.Compute(image);
return(Utilities.GetClassFromInt(answer));
}
private List<String> GetSimilaresDatabaseKNN(List<Double> descriptoresEntrada)
{
ModeloSimilitudEntities db=new ModeloSimilitudEntities();
Double[] vectorEntrada=descriptoresEntrada.ToArray();
vectorEntrada = Normalizar(vectorEntrada);
Double[][] matriz = csvtoMatrix("descriptoresNormalizados");
int[] pertenencia=new int[matriz.Length];
for(int i=0;i<pertenencia.Length;i++){
pertenencia[i]=1;
}
pertenencia[23] = 2;
KNearestNeighbors knn = new KNearestNeighbors(k: 10, inputs: matriz, outputs: pertenencia);
int answer = knn.Compute(vectorEntrada);
int[] a = new int[1]; a[0] = 1;
Double[][] cercanos = knn.GetNearestNeighbors(vectorEntrada,out a);
List<String> listaSimilares = new List<String>();
List<canciones> dbcanciones = db.canciones.ToList();
for (int i = 0; i < matriz.Length; i++)
{
if (cercanos.Contains(matriz[i]))
{
listaSimilares.Add(dbcanciones[i].id_spotify.Substring(14));
}
}
//string select="select * from canciones where energy={0} and liveness={1} and tempo={2} and speechiness={3} and acousticness={4} and loudness={5} and valence={6} and danceability={7} and instrumentalness={8} and key={9}";
//string select2 = "select * from canciones";
//for(int j=0;j<cercanos.Length;j++){
// object[] parameters = new object[10];
// for (int i = 0; i < 10; i++)
// {
// SqlParameter param = new SqlParameter("i", cercanos[j][i]);
// parameters[i] = cercanos[j][i];
// }
// var stores = db.Database.SqlQuery<canciones>(select, parameters).ToList();
// listaSimilares.Add(stores[0].id_spotify);
//}
return listaSimilares;
}
private void browse_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "All images|*.jpeg;*.png;*.jpg;*.bmp|JPEG Files (*.jpeg)|*.jpeg|PNG Files (*.png)|*.png|JPG Files (*.jpg)|*.jpg|Bitmap Files (*.bmp)|*.bmp";
Nullable<bool> result = dlg.ShowDialog();
if (result == true)
{
string filename = dlg.FileName;
Uri uri = new Uri(filename);
BitmapImage imgSource = new BitmapImage(uri);
FileNameTextBox.Text = filename;
picture.Source = imgSource;
/* KNN */
List<double []> letters = new List<double[]>();
List<int> outputList = new List<int>();
List<string> indexes = new List<string>();
foreach (string letterPath in dictionary) {
FileInfo file = new FileInfo(letterPath);
string nameClean = file.Name.Substring(0, file.Name.Length - 4);
while (Char.IsDigit(nameClean[nameClean.Length - 1])) {
nameClean = nameClean.Substring(0, nameClean.Length - 1);
}
int i = indexes.IndexOf(nameClean);
if (i <= -1) {
indexes.Add(nameClean);
outputList.Add(indexes.Count - 1);
} else {
outputList.Add(i);
}
letters.Add(getVectors(cropImage(getImageBitmap(file.FullName))));
}
DateTime start = DateTime.Now;
KNearestNeighbors knn = new KNearestNeighbors(k: 3, classes: indexes.Count, inputs: letters.ToArray(), outputs: outputList.ToArray());
int answer = knn.Compute(getVectors(cropImage(MakeGrayscale(getImageBitmap(filename)))));
string res = indexes[answer];
lettre.Content = res;
timeSpent.Content = "Execution time: " + (DateTime.Now - start);
}
}
private void button2_Click(object sender, EventArgs e)
{
wv = new Word2Vec(3);
textBox3.Text = "Processing";
System.Diagnostics.Debug.WriteLine("Starting Processing");
//Get list of classes, input and output vectors
classlist = new Dictionary <string, int>();
inverseClassList = new Dictionary <int, string>();
List <List <double> > IntMatrixInputs = new List <List <double> >();
List <string> stringInputs = new List <string>();
List <int> IntOutputs = new List <int>();
bool frequency = true;
int temp = 0;
string[] delimiters = { "," };
string[] fields;
TextFieldParser tfp;
tfp = new TextFieldParser(textBox1.Text);
tfp.HasFieldsEnclosedInQuotes = true;
tfp.Delimiters = delimiters;
fields = tfp.ReadFields();
int indexClass = 0;
int indexRows = 0;
while (!tfp.EndOfData)
{
System.Diagnostics.Debug.WriteLine("Processing training row: " + indexRows);
fields = tfp.ReadFields();
if (NotNullFields(fields))
{
if (!classlist.TryGetValue(fields[SelectedClass], out temp))
{
classlist[fields[SelectedClass]] = indexClass;
inverseClassList[indexClass] = fields[SelectedClass];
++indexClass;
}
/*
* stringInputs.Add(GetString(fields,""));
* IntMatrixInputs.Add(Word2Vec.Transform(GetString(fields,""), frequency).ToList()); //getLettersVector.toList();
*/
stringInputs.Add(GetString(fields, " "));
wv.addSentence(GetString(fields, " "));
IntOutputs.Add(classlist[fields[SelectedClass]]);
++indexRows;
}
}
wv.ComputeVectors();
List <string> strInputsTrain = new List <string>();
List <string> strInputsTest = new List <string>();
double[][] IntInputsTrain = new double[indexRows][];
int[] outputsTrain = new int[indexRows];
double [][] IntInputs = new double[IntMatrixInputs.Count][];
for (int i = 0; i < indexRows; ++i)
{
//IntInputs[i] = IntMatrixInputs[i].ToArray();
System.Diagnostics.Debug.WriteLine("Creating input row: " + i);
// IntInputsTrain[i] = wv.transform(stringInputs[i], comboBox4.SelectedItem.ToString()); //IntMatrixInputs[i].ToArray();
strInputsTrain.Add(stringInputs[i]);
outputsTrain[i] = IntOutputs[i];
}
if (comboBox2.SelectedItem.ToString() == "Levenshtein")
{
knnStr = new KNearestNeighbors <string>(k: Int32.Parse(textBox2.Text), classes: classlist.Count,
inputs: strInputsTrain.ToArray(), outputs: outputsTrain, distance: Distance.Levenshtein);
}
else if (comboBox2.SelectedItem.ToString() == "Euclidean")
{
knn = new KNearestNeighbors(k: Int32.Parse(textBox2.Text), classes: classlist.Count,
inputs: IntInputsTrain, outputs: outputsTrain, distance: Distance.Euclidean);
}
else if (comboBox2.SelectedItem.ToString() == "Jaccard")
{
knn = new KNearestNeighbors(k: Int32.Parse(textBox2.Text), classes: classlist.Count,
inputs: IntInputsTrain, outputs: outputsTrain, distance: Jaccard);
}
else
{
knn = new KNearestNeighbors(k: Int32.Parse(textBox2.Text), classes: classlist.Count,
inputs: IntInputsTrain, outputs: outputsTrain, distance: Distance.Cosine);
}
int correctCount = 0;
int wrongCount = 0;
List <int> expected = new List <int>();
List <int> predicted = new List <int>();
int positiveValue = 1;
int negativeValue = 0;
tfp = new TextFieldParser(textBox8.Text);
tfp.HasFieldsEnclosedInQuotes = true;
tfp.Delimiters = delimiters;
fields = tfp.ReadFields();
indexRows = 0;
string outputPath = textBox8.Text.Replace(".csv", "_Labeled.csv");
StreamWriter sw = new StreamWriter(outputPath);
sw.WriteLine("FirstName,LastName,Country");
while (!tfp.EndOfData)
{
System.Diagnostics.Debug.WriteLine("Processing test row: " + indexRows);
// Console.WriteLine("Processing row: " + indexRows);
fields = tfp.ReadFields();
if (fields[1] != "" && fields[2] != "")
{
int answer;
if (comboBox2.SelectedItem.ToString() == "Levenshtein")
{
answer = knnStr.Compute(GetString(fields, " "));
}
else
{
answer = knn.Compute(wv.transform(GetString(fields, " "), comboBox4.SelectedItem.ToString()));
}
int tempClass = -1;
classlist.TryGetValue(fields[SelectedClass], out tempClass);
expected.Add(tempClass);
predicted.Add(answer);
if (answer == tempClass)
{
correctCount++;
}
else
{
wrongCount++;
}
++indexRows;
sw.WriteLine(fields[1] + "," + fields[2] + "," + inverseClassList[answer]);
}
else
{
sw.WriteLine(fields[1] + "," + fields[2] + ",Undefined");
}
}
sw.Flush();
sw.Close();
ConfusionMatrix matrix = new ConfusionMatrix(predicted.ToArray(), expected.ToArray());
GeneralConfusionMatrix matrixGen = new GeneralConfusionMatrix(classlist.Count, expected.ToArray(), predicted.ToArray());
textBox3.Text = DateTime.Now + " " + "k: " + textBox2.Text + " Distance: " + comboBox2.SelectedItem.ToString() + " Vector: " + comboBox4.SelectedItem.ToString();
textBox3.Text += " Number of instances: " + indexRows + " Number of classes: " + classlist.Count;
textBox3.Text += " Correctly classified: " + correctCount + " Wrongly classified: " + wrongCount;
textBox3.Text += " Standard Error " + matrixGen.StandardError;
textBox3.Text += " Accuracy " + (double)((double)correctCount / (double)indexRows);
//textBox3.Text += " Conf. Matrix " + matrix;
//textBox8.Text = "Rows " + matrixGen.Matrix.Rows();
if (checkBox1.Checked)
{
paintMatrix(matrixGen, inverseClassList);
}
label8.Text = "-";
}
public void KNearestNeighborConstructorTest()
{
double[][] inputs =
{
new double[] { -5, -2, -1 },
new double[] { -5, -5, -6 },
new double[] { 2, 1, 1 },
new double[] { 1, 1, 2 },
new double[] { 1, 2, 2 },
new double[] { 3, 1, 2 },
new double[] { 11, 5, 4 },
new double[] { 15, 5, 6 },
new double[] { 10, 5, 6 },
};
int[] outputs =
{
0, 0,
1, 1, 1, 1,
2, 2, 2
};
int k = 3;
KNearestNeighbors target = new KNearestNeighbors(k, inputs, outputs);
for (int i = 0; i < inputs.Length; i++)
{
int actual = target.Compute(inputs[i]);
int expected = outputs[i];
Assert.AreEqual(expected, actual);
}
double[][] test =
{
new double[] { -4, -3, -1 },
new double[] { -5, -4, -4 },
new double[] { 5, 3, 4 },
new double[] { 3, 1, 6 },
new double[] { 10, 5, 4 },
new double[] { 13, 4, 5 },
};
int[] expectedOutputs =
{
0, 0,
1, 1,
2, 2,
};
for (int i = 0; i < test.Length; i++)
{
int actual = target.Compute(test[i]);
int expected = expectedOutputs[i];
Assert.AreEqual(expected, actual);
}
}
public string knn(DataTable tbl)
{
Codification codebook = new Codification(tbl);
DataTable symbols = codebook.Apply(tbl);
double[][] inputs = symbols.ToIntArray("Clump Thickness", "Uniformity of Cell Size", "Uniformity of Cell Shape", "Marginal Adhesion", "Single Epithelial Cell Size", "Bare Nuclei", "Bland Chromatin", "Normal Nucleoli", "Mitoses").ToDouble();
int sayac = 0;
int[] outputs = symbols.ToIntArray("Class").GetColumn(0);
KNearestNeighbors knn = new KNearestNeighbors(k: 4, classes: 2,
inputs: inputs, outputs: outputs);
int answer = knn.Compute(new double[] { Convert.ToInt32(inputlar[0]), Convert.ToInt32(inputlar[1]),
Convert.ToInt32( inputlar[2]), Convert.ToInt32( inputlar[3]), Convert.ToInt32( inputlar[4]),
Convert.ToInt32( inputlar[5]), Convert.ToInt32( inputlar[6]), Convert.ToInt32( inputlar[7]), Convert.ToInt32( inputlar[8]) }); // answer will be 2.
if (answer == 0)
answer = 4;
else
answer = 2;
return answer.ToString();
}
public static List<testResult> RunTest(string path,Hashtable dictionary ,int dicSize, Hashtable idfTable, KNearestNeighbors knn)
{
List<testResult> result = new List<testResult>();
//int[] trainingAnswer = new int[17998];
int count = 0;
string[] categories = Directory.GetDirectories(path);
for (int i = 0; i < categories.Count(); i++) //traverse Categories
{
Console.WriteLine(Path.GetFileName(categories[i]));
string[] file_names = Directory.GetFiles(categories[i]);
for (int j = 0; j < file_names.Count(); j++) //file in Cagetory
{
Console.WriteLine(Path.GetFileName(file_names[j]));
System.IO.StreamReader file = new System.IO.StreamReader(file_names[j]);
double[] featureV = new double[dicSize];
for(int k = 0;k<dicSize;k++) //initial
featureV[k] = 0;
String line;
int counter = 0;
Hashtable docWord = new Hashtable();
Stemmer stemmer = new Stemmer();
int sumWordCount = 0;
stemmer.stem();
//Console.WriteLine(stemmer.stem("running"));
//String word;
/******Structured Column*****/
while ((line = file.ReadLine()) != null)
{
//Console.WriteLine(line);
if (line.Contains(": "))
{
string[] splitPart = line.Split(new string[] { ": " }, StringSplitOptions.None);
string columnName = splitPart[0].Trim();
string content = splitPart[splitPart.Length - 1];
if (columnName.ToLower() == "subject")
{
foreach (string iter_word in Regex.Split(content, @"[^A-Za-z0-9_-]"))
{
String word = iter_word.ToLower().Trim(new Char[] { '_', '-' });
double Num;
bool isNum = double.TryParse(word, out Num);
if (isNum)
{
continue;
}
stemmer.add(word.ToCharArray(), word.Length);
stemmer.stem();
word = stemmer.ToString();
if (word.Length == 0)
{
continue;
}
if (stopWordTable.ContainsKey(word))
{
continue;
}
sumWordCount += 1 * subjectWeight;
// word preprocess done
if (docWord.ContainsKey(word))
{
int temp = (int)docWord[word];
temp += 1 * subjectWeight;
docWord[word] = temp;
}
else
{
docWord[word] = 1 * subjectWeight;
}
}
}
/*else if (columnName.ToLower() == "keywords")
{
foreach (string iter_word in Regex.Split(content, @"[^A-Za-z0-9_-]"))
{
String word = iter_word.ToLower().Trim(new Char[] { '_', '-' });
double Num;
bool isNum = double.TryParse(word, out Num);
if (isNum)
{
continue;
}
stemmer.add(word.ToCharArray(), word.Length);
stemmer.stem();
word = stemmer.ToString();
if (word.Length == 0)
{
continue;
}
if (stopWordTable.ContainsKey(word))
{
continue;
}
sumWordCount += 1 * keywordsWeight;
// word preprocess done
if (docWord.ContainsKey(word))
{
int temp = (int)docWord[word];
temp += 1 * keywordsWeight;
docWord[word] = temp;
}
else
{
docWord[word] = 1 * keywordsWeight;
}
}
}
if (columnName.ToLower() == "newsgroups")
{
foreach (string iter_word in content.Split(new char[] { ',' }))
{
String word = iter_word.ToLower().Trim();
sumWordCount += 1 * newsgroupsWeight;
// word preprocess done
if (docWord.ContainsKey(word))
{
int temp = (int)docWord[word];
temp += 1 * newsgroupsWeight;
docWord[word] = temp;
}
else
{
docWord[word] = 1 * newsgroupsWeight;
}
}
}*/
/*else if (columnName.ToLower() == "from")
{
Regex emailRegex = new Regex(@"\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*", RegexOptions.IgnoreCase);
//find items that matches with our pattern
MatchCollection emailMatches = emailRegex.Matches(content);
foreach (Match emailMatch in emailMatches)
{
String word = emailMatch.Value;
// word preprocess done
if (docWord.ContainsKey(word))
{
int temp = (int)docWord[word];
temp += 1 * fromWeight;
docWord[word] = temp;
}
else
{
docWord[word] = 1 * fromWeight;
}
}
}*/
}
else
{
break;
}
}
/******Text******/
while ((line = file.ReadLine()) != null)
{
if (line.StartsWith(">") || line.StartsWith("|>"))
{
continue;
}
//foreach(string iter_word in line.Split(new Char [] {' ', ',', '.', ':', '\t', '\n' }))
foreach (string iter_word in Regex.Split(line, @"[^A-Za-z0-9_-]"))
{
String word = iter_word.ToLower().Trim(new Char[] { '_', '-' });
double Num;
bool isNum = double.TryParse(word, out Num);
if (isNum)
{
continue;
}
stemmer.add(word.ToCharArray(), word.Length);
stemmer.stem();
word = stemmer.ToString();
if (word.Length == 0)
{
continue;
}
if (stopWordTable.ContainsKey(word))
{
continue;
}
sumWordCount++;
// word preprocess done
if (docWord.ContainsKey(word))
{
int temp = (int)docWord[word];
temp++;
docWord[word] = temp;
}
else
{
docWord[word] = 1;
}
}
}// line end
foreach (string word in docWord.Keys)
{
if (dictionary.ContainsKey(word))
{
int indexOfDic = (int)dictionary[word];
double TF = System.Convert.ToDouble((int)docWord[word])/System.Convert.ToDouble(sumWordCount);
double IDF = (double)idfTable[word];
featureV[indexOfDic] = TF * IDF;
}
}
testResult resultTemp = new testResult();
resultTemp.docName = Path.GetFileName(file_names[j]);
resultTemp.oriClass = i;
resultTemp.resultClass = knn.Compute(featureV);
result.Add(resultTemp);
Console.WriteLine(resultTemp.resultClass);
}//file end
//Console.ReadLine();
}//category end
return result;
}
public ClassificationType[,] Classify(LasFile file, int divCountX, int divCountY)
{
Stopwatch swTotal = Stopwatch.StartNew();
Stopwatch sw = Stopwatch.StartNew();
Console.WriteLine("Preparing testing dataset...");
LasPointDataRecords points = file.LasPointDataRecords;
ClassificationType[,] output = new ClassificationType[divCountX, divCountY];
SubgroupOfPoints[,] values = Utills.GroupPoints(file, divCountX, divCountY);
Statistics stats = new Statistics();
stats.Count = divCountX * divCountY;
sw.Stop();
Console.WriteLine("Preparing testing dataset completed [" + sw.Elapsed.TotalSeconds.ToString() + "s]");
Stopwatch sw2 = Stopwatch.StartNew();
Console.WriteLine("Classification in progress...");
int noiseCount = 0;
for (int i = 0; i < divCountX; i++)
{
for (int j = 0; j < divCountY; j++)
{
if (values[i, j].classIndex == 7)
{
output[i, j] = ClassificationType.Noise;
noiseCount++;
}
else
{
double avgHeight = values[i, j].avgHeight;
double avgIntensity = values[i, j].avgIntensity;
double avgDistance = values[i, j].avgDistance;
OpenTK.Vector3 slopeVector = values[i, j].slopeVector;
output[i, j] = Utills.ClassificationClasses[knn.Compute(new double[] {
avgDistance, avgHeight, avgIntensity, slopeVector[0],
slopeVector[1], slopeVector[2]
})];
ClassificationType ct;
if (!Utills.QuickClassess.TryGetValue(values[i, j].classIndex, out ct))
{
continue;
}
if (output[i, j] != ct)
{
stats.ClassErrors[(int)ct]++;
}
stats.PredictionMatrix[(int)output[i, j], (int)ct]++;
stats.PredictionMatrix[(int)ct, (int)output[i, j]]++;
stats.ClassCount[(int)output[i, j]]++;
stats.ClassRealCount[(int)ct]++;
}
}
//Console.WriteLine(i);
}
Console.Write(stats.ToString());
sw2.Stop();
Console.WriteLine("Classification completed [" + sw2.Elapsed.TotalSeconds.ToString() + "s]");
swTotal.Stop();
Console.WriteLine("Total time: [" + swTotal.Elapsed.TotalSeconds.ToString() + "s]");
Console.WriteLine("Noise count: " + noiseCount.ToString());
stats.SaveMatrixAsCSV();
return(output);
}
public void KNearestNeighborConstructorTest()
{
double[][] inputs =
{
new double[] { -5, -2, -1 },
new double[] { -5, -5, -6 },
new double[] { 2, 1, 1 },
new double[] { 1, 1, 2 },
new double[] { 1, 2, 2 },
new double[] { 3, 1, 2 },
new double[] { 11, 5, 4 },
new double[] { 15, 5, 6 },
new double[] { 10, 5, 6 },
};
int[] outputs =
{
0, 0,
1, 1, 1, 1,
2, 2, 2
};
int k = 3;
KNearestNeighbors target = new KNearestNeighbors(k, inputs, outputs);
for (int i = 0; i < inputs.Length; i++)
{
int actual = target.Compute(inputs[i]);
int expected = outputs[i];
Assert.AreEqual(expected, actual);
}
double[][] test =
{
new double[] { -4, -3, -1 },
new double[] { -5, -4, -4 },
new double[] { 5, 3, 4 },
new double[] { 3, 1, 6 },
new double[] { 10, 5, 4 },
new double[] { 13, 4, 5 },
};
int[] expectedOutputs =
{
0, 0,
1, 1,
2, 2,
};
for (int i = 0; i < test.Length; i++)
{
int actual = target.Compute(test[i]);
int expected = expectedOutputs[i];
Assert.AreEqual(expected, actual);
}
}
//The KNN algorithm
//It creates a knn library object, classifies the entire data set
//and returns the confusion matrix for the classification
private ConfusionMatrix RunKNN(int k, Double[][] trainingSet, int[] trainingOutput, Double[][] testSet, int[] expected)
{
//Create a knn classifer with 2 classes
KNearestNeighbors knn = new KNearestNeighbors(k: k, classes: 2,
inputs: trainingSet, outputs: trainingOutput);
//Map the classifier over the test set
//This wil return an array where index i is the classificatioon of the i-th vector
//of the testSet
var predicted = UtilityProvider.MergeArrays(trainingSet, testSet)
.Select(x => knn.Compute(x))
.ToArray();
//For test, assume 0 as positive and 1 as negative
int positive = 0;
int negative = 1;
//Create a new confusion matrix with the calculated parameters
ConfusionMatrix cmatrix = new ConfusionMatrix(predicted, UtilityProvider.MergeArrays(trainingOutput, expected), positive, negative);
return cmatrix;
}
