public void Test()
{
weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader("D:\\android_analysis\\attributes.arff"));
insts.setClassIndex(insts.numAttributes() - 1);
weka.classifiers.Classifier cl = new weka.classifiers.trees.J48();
cl.buildClassifier(insts);
weka.filters.Filter myRandom = new weka.filters.unsupervised.instance.Randomize();
myRandom.setInputFormat(insts);
insts = weka.filters.Filter.useFilter(insts, myRandom);
int trainSize = (int)(insts.numInstances() * 0.66);
int testSize = insts.numInstances() - trainSize;
weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);
cl.buildClassifier(train);
for (int i = trainSize; i < insts.numInstances(); i++)
{
weka.core.Instance currentInst = insts.instance(i);
double predictedClass = cl.classifyInstance(currentInst);
double[] distrs = cl.distributionForInstance(currentInst);
string actual = insts.classAttribute().value((int)currentInst.classValue());
string predicted = insts.classAttribute().value((int)predictedClass);
System.Console.WriteLine("ID: " + (i + 1) + ", " + actual + " --> " + predicted);
}
}
//**************************************************************************************
/// <summary>
/// Returns classifier prediction based on provided parameters.
/// </summary>
/// <param name="iParameters"></param>
public Prediction Predict(float[] iParameters)
{
if (iParameters is null)
{
throw new ArgumentNullException(nameof(iParameters));
}
WaitTillModelReady();
// Create instances object
var instances = new weka.core.Instances("Test", Attributes, 1);
instances.setClassIndex(instances.numAttributes() - 1);
// Create single instance
var instance = new weka.core.DenseInstance(instances.numAttributes() - 1);
instance.setDataset(instances);
// Fill instance with data
for (int i = 0; i < iParameters.Length; i++)
{
instance.setValue(i, iParameters[i]);
}
// Get prediction
double prediction = Model.classifyInstance(instance);
// Convert prediction to decision
return((Prediction)Enum.Parse(typeof(Prediction), instances.classAttribute().value((int)prediction)));
}
static public List <string> do_Classification_bySerialClassfier()
{
List <string> listPredictClass = new List <string>();
//----------
predict_numCorrect = 0;
double predictedClass;
double actualClass;
weka.core.Instance currentInst;
listResult = new List <Weka_EachResult>();
for (int i = split_trainSize; i < insts.numInstances(); i++)
{
currentInst = insts.instance(i);
//TheSys.showError(currentInst.ToString(), true);
predictedClass = serialClassifier.classifyInstance(currentInst);
actualClass = insts.instance(i).classValue();
if (predictedClass == actualClass)
{
predict_numCorrect++;
}
//==================================
listResult.Add(new Weka_EachResult()
{
ID = i.ToString(),
Actual = actualClass.ToString(),
Predict = predictedClass.ToString(),
Diff = (predictedClass - actualClass).ToString()
});
//Get Class Name
listPredictClass.Add(insts.classAttribute().value((int)predictedClass));
}
return(listPredictClass);
}
public List <string> Classify(string model, string test)
{
List <string> ret = new List <string>();
try
{
java.io.ObjectInputStream ois = new java.io.ObjectInputStream(new java.io.FileInputStream(model));
weka.classifiers.Classifier cl = (weka.classifiers.Classifier)ois.readObject();
ois.close();
weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader(test));
insts.setClassIndex(insts.numAttributes() - 1);
for (int i = 0; i < 1; i++)
{
weka.core.Instance currentInst = insts.instance(i);
double predictedClass = cl.classifyInstance(currentInst);
double[] distrs = cl.distributionForInstance(currentInst);
//string actual = insts.classAttribute().value((int)currentInst.classValue());
//string predicted = insts.classAttribute().value((int)predictedClass);
// System.Console.WriteLine("ID: " + (i + 1) + ", " + predicted);
for (int j = 0; j < distrs.Length; j++)
{
string predicted = insts.classAttribute().value(j);
string distr = distrs[j].ToString("#0.000");
ret.Add(predicted + "," + distr);
}
}
return(ret);
}
catch
{
return(ret);
}
}
//Only 1 output: last instance
static public string do_Classification_bySerialClassfier_1out_standAlone
(SerializedClassifier serialClassifier, weka.core.Instances instances, int colClass)
{
instances.setClassIndex(colClass);
weka.core.Instance each = instances.instance(instances.numInstances() - 1);
double predictedClass = serialClassifier.classifyInstance(each);
return(instances.classAttribute().value((int)predictedClass));
}
public void Test(weka.core.Instances testInstances = null)
{
if (testInstances == null)
{
testInstances = CreateCurrentInstances();
}
//if (m_cls is MLEA.IBatchClassifier)
//{
// StringBuilder sb = new StringBuilder();
// MLEA.IBatchClassifier batchClassifier = m_cls as MLEA.IBatchClassifier;
// double[] d = batchClassifier.classifyInstances(testInstances);
// for (int i = 0; i < d.Length; ++i)
// {
// string s = string.Format("{0}, {1}: {2}", testInstances.instance(i).value(0).ToString("N2"), testInstances.instance(i).value(1).ToString("N2"), d[i].ToString("N0"));
// sb.AppendLine(s);
// }
// this.Invoke(new Action(() =>
// {
// txtEval.Text = sb.ToString();
// }));
//}
//else
{
MLEA.MyEvaluation eval = null;
if (testInstances.classAttribute().isNominal())
{
var costMatrix = MLEA.TestParameters.CostMatrix;
eval = new MLEA.MyEvaluation(costMatrix);
eval.evaluateModel(m_cls, testInstances);
this.Invoke(new Action(() =>
{
txtEval.Text = string.Format("TP:{0}, FP:{1}, Cost:{2}", eval.numTruePositives(1), eval.numFalsePositives(1), eval.totalCost().ToString());
}));
}
else
{
//eval = new MLEA.MyEvaluation(costMatrix);
//eval.evaluateModel(m_cls, testInstances);
//this.Invoke(new Action(() =>
//{
// txtEval.Text = eval.toSummaryString().Replace("\n", System.Environment.NewLine)
// + System.Environment.NewLine;
//}));
}
}
}
protected void Button2_Click(object sender, EventArgs e)
{
weka.core.Instances data = new weka.core.Instances(new java.io.FileReader("d:\\train.arff"));
data.setClassIndex(data.numAttributes() - 1);
weka.classifiers.Classifier cls = new weka.classifiers.bayes.NaiveBayes();
// weka.classifiers.functions.supportVector.SMOset();
int runs = 1;
int folds = 10;
//string sq = "delete from nbresults";
//dbc.execfn(sq);
// perform cross-validation
for (int i = 0; i < runs; i++)
{
// randomize data
int seed = i + 1;
java.util.Random rand = new java.util.Random(seed);
weka.core.Instances randData = new weka.core.Instances(data);
randData.randomize(rand);
if (randData.classAttribute().isNominal())
{
randData.stratify(folds);
}
// weka.classifiers.trees.j48 jj;
weka.classifiers.Evaluation eval = new weka.classifiers.Evaluation(randData);
for (int n = 0; n < folds; n++)
{
weka.core.Instances train = randData.trainCV(folds, n);
weka.core.Instances test = randData.testCV(folds, n);
// build and evaluate classifier
weka.classifiers.Classifier clsCopy = weka.classifiers.Classifier.makeCopy(cls);
clsCopy.buildClassifier(train);
eval.evaluateModel(clsCopy, test);
}
preci_value.Text = eval.precision(0).ToString();
recall_value.Text = eval.recall(0).ToString();
acc_value.Text = eval.fMeasure(0).ToString();
string s = "NB";
// string str = "insert into evaluation values('" + instid.Text + "','" + courid.Text.ToString() + "','" + preci_value.Text.ToString() + "','" + recall_value.Text.ToString() + "','" + acc_value.Text.ToString() + "','" + s + "' )";
// db.execfn(str);
// MessageBox.Show("saved");
}
}
static public List <string> do_Classification_bySerialClassfier_standAlone
(SerializedClassifier serialClassifier, weka.core.Instances instances, int colClass)
{
instances.setClassIndex(colClass);
List <string> listPredictClass = new List <string>();
double predictedClass; double actualClass; predict_numCorrect = 0;
weka.core.Instance each;
for (int i = 0; i < instances.numInstances(); i++)
{
each = instances.instance(i);
predictedClass = serialClassifier.classifyInstance(each);
actualClass = instances.instance(i).classValue();
if (predictedClass == actualClass)
{
predict_numCorrect++;
}
//Get Class Name
listPredictClass.Add(instances.classAttribute().value((int)predictedClass));
}
return(listPredictClass);
}
/// <summary> Sets the format of the input instances.
///
/// </summary>
/// <param name="instanceInfo">an Instances object containing the input
/// instance structure (any instances contained in the object are
/// ignored - only the structure is required).
/// </param>
/// <returns> true if the outputFormat may be collected immediately
/// </returns>
/// <exception cref="Exception">if the input format can't be set
/// successfully
/// </exception>
public override bool setInputFormat(Instances instanceInfo)
{
if (instanceInfo.classIndex() < 0 || !instanceInfo.classAttribute().Nominal)
{
throw new System.ArgumentException("Supervised resample requires nominal class");
}
base.setInputFormat(instanceInfo);
setOutputFormat(instanceInfo);
return true;
}
private void button_Discover_Click(object sender, EventArgs e)
{
String s_newInstance = "";
StreamReader sr = new StreamReader(fileDirectory);
StreamWriter sw = new StreamWriter(@"test.arff", true);
String newDirectory = "test.arff"; // for algortihms
string line = "";
string comp = "@data";
string comp2 = "@DATA";
line = sr.ReadLine();
do
{
sw.WriteLine(line);
if (line == comp || line == comp2)
{
break;
}
} while ((line = sr.ReadLine()) != null);
for (int i = 0; i < dataGridView1.Rows.Count - 1; i++)
{
s_newInstance += (String)dataGridView1.Rows[i].Cells[1].Value + ","; //değiştir
}
s_newInstance += "?";
sw.WriteLine(s_newInstance);
sr.Close();
sw.Close();
switch (count)
{
case 1:
weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader(newDirectory));
insts.setClassIndex(insts.numAttributes() - 1);
weka.filters.Filter myNominalData = new weka.filters.unsupervised.attribute.Discretize();
myNominalData.setInputFormat(insts);
insts = weka.filters.Filter.useFilter(insts, myNominalData);
//randomize the order of the instances in the dataset.
weka.filters.Filter myRandom = new weka.filters.unsupervised.instance.Randomize();
myRandom.setInputFormat(insts);
insts = weka.filters.Filter.useFilter(insts, myRandom);
double predictedClass = cl_Naive.classifyInstance(insts.instance(0));
Console.WriteLine("hey", insts.instance(0));
textBox3.Text = insts.classAttribute().value(Convert.ToInt32(predictedClass));
break;
case 2:
weka.core.Instances insts2 = new weka.core.Instances(new java.io.FileReader(fileDirectory));
insts2.setClassIndex(insts2.numAttributes() - 1);
//Nominal to Binary
weka.filters.Filter myBinaryData = new weka.filters.unsupervised.attribute.NominalToBinary();
myBinaryData.setInputFormat(insts2);
insts2 = weka.filters.Filter.useFilter(insts2, myBinaryData);
//Normalization
weka.filters.Filter myNormalized = new weka.filters.unsupervised.instance.Normalize();
myNormalized.setInputFormat(insts2);
insts2 = weka.filters.Filter.useFilter(insts2, myNormalized);
//randomize the order of the instances in the dataset.
weka.filters.Filter myRandom2 = new weka.filters.unsupervised.instance.Randomize();
myRandom2.setInputFormat(insts2);
insts2 = weka.filters.Filter.useFilter(insts2, myRandom2);
double predictedClass2 = cl_Knn.classifyInstance(insts2.instance(0));
textBox3.Text = insts2.classAttribute().value(Convert.ToInt32(predictedClass2));
break;
case 3:
weka.core.Instances insts3 = new weka.core.Instances(new java.io.FileReader(newDirectory));
insts3.setClassIndex(insts3.numAttributes() - 1);
weka.filters.Filter myNormalized2 = new weka.filters.unsupervised.instance.Normalize();
myNormalized2.setInputFormat(insts3);
insts3 = weka.filters.Filter.useFilter(insts3, myNormalized2);
//randomize the order of the instances in the dataset.
weka.filters.Filter myRandom3 = new weka.filters.unsupervised.instance.Randomize();
myRandom3.setInputFormat(insts3);
insts3 = weka.filters.Filter.useFilter(insts3, myRandom3);
double predictedClass3 = cl_Tree.classifyInstance(insts3.instance(0));
textBox3.Text = insts3.classAttribute().value(Convert.ToInt32(predictedClass3));
break;
case 4:
weka.core.Instances insts4 = new weka.core.Instances(new java.io.FileReader(newDirectory));
insts4.setClassIndex(insts4.numAttributes() - 1);
//cl = new weka.classifiers.functions.MultilayerPerceptron();
//Nominal to Binary
weka.filters.Filter myBinaryData2 = new weka.filters.unsupervised.attribute.NominalToBinary();
myBinaryData2.setInputFormat(insts4);
insts4 = weka.filters.Filter.useFilter(insts4, myBinaryData2);
//Normalization
weka.filters.Filter myNormalized3 = new weka.filters.unsupervised.instance.Normalize();
myNormalized3.setInputFormat(insts4);
insts4 = weka.filters.Filter.useFilter(insts4, myNormalized3);
//randomize the order of the instances in the dataset.
weka.filters.Filter myRandom4 = new weka.filters.unsupervised.instance.Randomize();
myRandom4.setInputFormat(insts4);
insts4 = weka.filters.Filter.useFilter(insts4, myRandom4);
double predictedClass4 = cl_NN.classifyInstance(insts4.instance(0));
textBox3.Text = insts4.classAttribute().value(Convert.ToInt32(predictedClass4));
break;
case 5:
weka.core.Instances insts5 = new weka.core.Instances(new java.io.FileReader(newDirectory));
insts5.setClassIndex(insts5.numAttributes() - 1);
//Nominal to Binary
weka.filters.Filter myBinaryData3 = new weka.filters.unsupervised.attribute.NominalToBinary();
myBinaryData3.setInputFormat(insts5);
insts5 = weka.filters.Filter.useFilter(insts5, myBinaryData3);
//Normalization
weka.filters.Filter myNormalized4 = new weka.filters.unsupervised.instance.Normalize();
myNormalized4.setInputFormat(insts5);
insts5 = weka.filters.Filter.useFilter(insts5, myNormalized4);
//randomize the order of the instances in the dataset.
weka.filters.Filter myRandom5 = new weka.filters.unsupervised.instance.Randomize();
myRandom5.setInputFormat(insts5);
insts5 = weka.filters.Filter.useFilter(insts5, myRandom5);
double predictedClass5 = cl_SVM.classifyInstance(insts5.instance(0));
textBox3.Text = insts5.classAttribute().value(Convert.ToInt32(predictedClass5));
break;
default:
textBox3.Text = "Error!";
break;
}
}
