Beispiel #1
0
        public static double classifyTrain_Test(string classifierFileName, Classifier _classifier)
        {
            double performance = 0.0;

            try
            {
                FileReader          javaFileReader = new FileReader(classifierFileName);
                weka.core.Instances insts          = new weka.core.Instances(javaFileReader);
                javaFileReader.close();

                insts.setClassIndex(insts.numAttributes() - 1);

                System.Console.WriteLine("Performing " + percentSplit + "% split evaluation.");

                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);

                _classifier.buildClassifier(train);

                int numCorrect   = 0;
                var numnerOfInst = insts.numInstances();
                int dataIndex    = 0;
                for (int i = trainSize; i < numnerOfInst; i++)
                {
                    dataIndex++;
                    weka.core.Instance currentInst = insts.instance(i);

                    double   predictClass = _classifier.classifyInstance(currentInst);
                    double[] dist         = _classifier.distributionForInstance(currentInst);


                    string actualClass    = insts.classAttribute().value((int)insts.instance(i).classValue());
                    string predictedClass = insts.classAttribute().value((int)predictClass);


                    var abcd = _classifier.getClass();

                    if (predictedClass == actualClass)
                    {
                        numCorrect++;
                    }
                }
                performance = (double)((double)numCorrect / (double)testSize) * 100;

                System.Console.WriteLine(numCorrect + " out of " + testSize + " correct (" + performance.toString() + "%)");
            }
            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
            }

            return(performance);
        }
        public static double SupportVectorMachineTest(weka.core.Instances insts)
        {
            try
            {
                //weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader("iris.arff"));

                insts.setClassIndex(insts.numAttributes() - 1);


                SupportVectorMachine = new weka.classifiers.functions.SMO();

                weka.filters.Filter myDummy = new weka.filters.unsupervised.attribute.NominalToBinary();

                myDummy.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, myDummy);


                weka.filters.Filter myNormalize = new weka.filters.unsupervised.instance.Normalize();
                myNormalize.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, myNormalize);

                weka.filters.Filter myRandom = new weka.filters.unsupervised.instance.Randomize();
                myRandom.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, myRandom);

                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);


                SupportVectorMachine.buildClassifier(train);


                int numCorrect = 0;
                for (int i = trainSize; i < insts.numInstances(); i++)
                {
                    weka.core.Instance currentInst    = insts.instance(i);
                    double             predictedClass = SupportVectorMachine.classifyInstance(currentInst);
                    if (predictedClass == insts.instance(i).classValue())
                    {
                        numCorrect++;
                    }
                }
                return((double)numCorrect / (double)testSize * 100.0);
            }
            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
                return(0);
            }
        }
        public double FindAccurancy() //accurancy döndürcek
        {
            int numCorrect = 0;

            for (int i = Classifier.TrainSize; i < Instance.numInstances(); i++)
            {
                weka.core.Instance currentInst    = Instance.instance(i);
                double             predictedClass = Classifier.classifier.classifyInstance(currentInst);
                if (predictedClass == Instance.instance(i).classValue())
                {
                    numCorrect++;
                }
            }
            return((double)numCorrect / (double)Classifier.TestSize * 100.0);
        }
Beispiel #4
0
 public void WekaFeedInput(Pair <string, double>[] encinstance)
 {
     //Console.WriteLine(encinstance.mkstring());
     weka.core.Instance inst = new weka.core.Instance(attributes.Length + 1);
     inst.setDataset(trainset);
     foreach (Pair <string, double> x in encinstance)
     {
         if (x == null)
         {
             continue;
         }
         //Console.WriteLine(x.mkstring());
         inst.setValue(FindAttribute(x.first), x.second);
     }
     wekaoutput(ClassifyInstance(inst));
 }
        public static double NaiveBayesTest(weka.core.Instances insts)
        {
            try
            {
                //weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader("iris.arff"));

                insts.setClassIndex(insts.numAttributes() - 1);


                NaiveBayescl = new weka.classifiers.bayes.NaiveBayes();


                //discretize
                weka.filters.Filter myDiscretize = new weka.filters.unsupervised.attribute.Discretize();
                myDiscretize.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, myDiscretize);

                weka.filters.Filter myRandom = new weka.filters.unsupervised.instance.Randomize();
                myRandom.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, myRandom);

                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);

                NaiveBayescl.buildClassifier(train);


                int numCorrect = 0;
                for (int i = trainSize; i < insts.numInstances(); i++)
                {
                    weka.core.Instance currentInst    = insts.instance(i);
                    double             predictedClass = NaiveBayescl.classifyInstance(currentInst);
                    if (predictedClass == insts.instance(i).classValue())
                    {
                        numCorrect++;
                    }
                }
                return((double)numCorrect / (double)testSize * 100.0);
            }
            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
                return(0);
            }
        }
Beispiel #6
0
        public double GetVolume(weka.core.Instance instance)
        {
            double sum = m_counts[0] + m_counts[1] + m_counts[2];

            if (sum == 0)
            {
                return(0);
            }

            double kelly_b = -m_tp / m_sl;
            double kelly_p = (double)m_counts[2] / sum;
            double kelly_f = (kelly_p * (kelly_b + 1) - 1) / kelly_b;
            // f=0.2, sl=20 =>0.01
            double v = 2 * (kelly_f / 0.2) / (m_sl / 10);

            if (v <= 0)
            {
                return(0);
            }
            return(v);
        }
Beispiel #7
0
        public static void Test()
        {
            weka.core.Instances data = new weka.core.Instances(new java.io.FileReader("./data/Classification/Communication.arff"));
            data.setClassIndex(data.numAttributes() - 1);

            weka.classifiers.Classifier cls = new weka.classifiers.bayes.BayesNet();


            //Save BayesNet results in .txt file
            using (System.IO.StreamWriter file = new System.IO.StreamWriter("./data/Classification/Communication_Report.txt"))
            {
                file.WriteLine("Performing " + percentSplit + "% split evaluation.");

                int runs = 1;

                // 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);

                    //weka.classifiers.Evaluation eval = new weka.classifiers.Evaluation(randData);

                    int trainSize             = (int)Math.Round((double)data.numInstances() * percentSplit / 100);
                    int testSize              = data.numInstances() - trainSize;
                    weka.core.Instances train = new weka.core.Instances(data, 0, 0);
                    weka.core.Instances test  = new weka.core.Instances(data, 0, 0);
                    train.setClassIndex(train.numAttributes() - 1);
                    test.setClassIndex(test.numAttributes() - 1);

                    //Print classifier analytics for all the dataset
                    file.WriteLine("EVALUATION OF TEST DATASET.");

                    //int numCorrect = 0;
                    for (int j = 0; j < data.numInstances(); j++)
                    {
                        weka.core.Instance currentInst = randData.instance(j);

                        if (j < trainSize)
                        {
                            train.add(currentInst);
                        }

                        else
                        {
                            test.add(currentInst);

                            /*
                             * double predictedClass = cls.classifyInstance(currentInst);
                             *
                             * double[] prediction = cls.distributionForInstance(currentInst);
                             *
                             * for (int p = 0; p < prediction.Length; p++)
                             * {
                             *  file.WriteLine("Probability of class [{0}] for [{1}] is: {2}", currentInst.classAttribute().value(p), currentInst, Math.Round(prediction[p], 4));
                             * }
                             * file.WriteLine();
                             *
                             * file.WriteLine();
                             * if (predictedClass == data.instance(j).classValue())
                             *  numCorrect++;*/
                        }
                    }

                    // build and evaluate classifier
                    cls.buildClassifier(train);

                    // Test the model
                    weka.classifiers.Evaluation eval = new weka.classifiers.Evaluation(randData);
                    eval.evaluateModel(cls, test);

                    // Print the results as in Weka explorer:
                    //Print statistics
                    String strSummaryTest = eval.toSummaryString();

                    file.WriteLine(strSummaryTest);
                    file.WriteLine();

                    //Print detailed class statistics
                    file.WriteLine(eval.toClassDetailsString());
                    file.WriteLine();

                    //Print confusion matrix
                    file.WriteLine(eval.toMatrixString());
                    file.WriteLine();

                    // Get the confusion matrix
                    double[][] cmMatrixTest = eval.confusionMatrix();

                    System.Console.WriteLine("Bayesian Network results saved in Communication_Report.txt file successfully.");
                }
            }
        }
Beispiel #8
0
        public static void BayesTest()
        {
            try
            {
                weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader("iris.arff"));
                insts.setClassIndex(insts.numAttributes() - 1);

                weka.classifiers.Classifier cl = new weka.classifiers.bayes.BayesNet();
                System.Console.WriteLine("Performing " + percentSplit + "% split evaluation.");

                //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);

                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);
                weka.core.Instances test  = new weka.core.Instances(insts, 0, 0);


                cl.buildClassifier(train);
                //print model
                System.Console.WriteLine(cl);

                int numCorrect = 0;
                for (int i = trainSize; i < insts.numInstances(); i++)
                {
                    weka.core.Instance currentInst    = insts.instance(i);
                    double             predictedClass = cl.classifyInstance(currentInst);
                    test.add(currentInst);

                    double[] prediction = cl.distributionForInstance(currentInst);

                    for (int x = 0; x < prediction.Length; x++)
                    {
                        System.Console.WriteLine("Probability of class [{0}] for [{1}] is: {2}", currentInst.classAttribute().value(x), currentInst, Math.Round(prediction[x], 4));
                    }
                    System.Console.WriteLine();

                    if (predictedClass == insts.instance(i).classValue())
                    {
                        numCorrect++;
                    }
                }
                System.Console.WriteLine(numCorrect + " out of " + testSize + " correct (" +
                                         (double)((double)numCorrect / (double)testSize * 100.0) + "%)");

                // Train the model
                weka.classifiers.Evaluation eTrain = new weka.classifiers.Evaluation(train);
                eTrain.evaluateModel(cl, train);

                // Print the results as in Weka explorer:
                //Print statistics
                String strSummaryTrain = eTrain.toSummaryString();
                System.Console.WriteLine(strSummaryTrain);

                //Print detailed class statistics
                System.Console.WriteLine(eTrain.toClassDetailsString());

                //Print confusion matrix
                System.Console.WriteLine(eTrain.toMatrixString());

                // Get the confusion matrix
                double[][] cmMatrixTrain = eTrain.confusionMatrix();


                // Test the model
                weka.classifiers.Evaluation eTest = new weka.classifiers.Evaluation(test);
                eTest.evaluateModel(cl, test);

                // Print the results as in Weka explorer:
                //Print statistics
                String strSummaryTest = eTest.toSummaryString();
                System.Console.WriteLine(strSummaryTest);

                //Print detailed class statistics
                System.Console.WriteLine(eTest.toClassDetailsString());

                //Print confusion matrix
                System.Console.WriteLine(eTest.toMatrixString());

                // Get the confusion matrix
                double[][] cmMatrixTest = eTest.confusionMatrix();
            }

            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
            }
        }
Beispiel #9
0
        public static void CreateArffFiles()
        {
            java.util.ArrayList atts;
            java.util.ArrayList attsRel;
            java.util.ArrayList attVals;
            java.util.ArrayList attValsRel;
            Instances           data;
            Instances           dataRel;

            double[] vals;
            double[] valsRel;
            int      i;

            // 1. set up attributes
            atts = new java.util.ArrayList();
            // - numeric
            atts.Add(new weka.core.Attribute("att1"));
            // - nominal
            attVals = new java.util.ArrayList();
            for (i = 0; i < 5; i++)
            {
                attVals.add("val" + (i + 1));
            }

            weka.core.Attribute nominal = new weka.core.Attribute("att2", attVals);
            atts.add(nominal);
            // - string
            atts.add(new weka.core.Attribute("att3", (java.util.ArrayList)null));
            // - date
            atts.add(new weka.core.Attribute("att4", "yyyy-MM-dd"));
            // - relational
            attsRel = new java.util.ArrayList();
            // -- numeric
            attsRel.add(new weka.core.Attribute("att5.1"));
            // -- nominal
            attValsRel = new java.util.ArrayList();
            for (i = 0; i < 5; i++)
            {
                attValsRel.Add("val5." + (i + 1));
            }
            attsRel.add(new weka.core.Attribute("att5.2", attValsRel));
            dataRel = new Instances("att5", attsRel, 0);
            atts.add(new weka.core.Attribute("att5", dataRel, 0));

            // 2. create Instances object
            data = new Instances("MyRelation", atts, 0);

            // 3. fill with data
            // first instance
            vals = new double[data.numAttributes()];
            // - numeric
            vals[0] = Math.PI;
            // - nominal
            vals[1] = attVals.indexOf("val3");
            // - string
            vals[2] = data.attribute(2).addStringValue("This is a string!");
            // - date
            vals[3] = data.attribute(3).parseDate("2001-11-09");
            // - relational
            dataRel = new Instances(data.attribute(4).relation(), 0);
            // -- first instance
            valsRel    = new double[2];
            valsRel[0] = Math.PI + 1;
            valsRel[1] = attValsRel.indexOf("val5.3");
            weka.core.Instance inst = new DenseInstance(2);
            inst.setValue(1, valsRel[0]);
            inst.setValue(1, valsRel[1]);
            dataRel.add(inst);
            // -- second instance
            valsRel    = new double[2];
            valsRel[0] = Math.PI + 2;
            valsRel[1] = attValsRel.indexOf("val5.2");
            dataRel.add(inst);
            vals[4] = data.attribute(4).addRelation(dataRel);
            // add
            weka.core.Instance inst2 = new DenseInstance(4);
            inst2.setValue(1, vals[0]);
            inst2.setValue(1, vals[1]);
            inst2.setValue(1, vals[2]);
            inst2.setValue(1, vals[3]);
            data.add(inst2);

            // second instance
            vals = new double[data.numAttributes()];  // important: needs NEW array!
                                                      // - numeric
            vals[0] = Math.E;
            // - nominal
            vals[1] = attVals.indexOf("val1");
            // - string
            vals[2] = data.attribute(2).addStringValue("And another one!");
            // - date
            vals[3] = data.attribute(3).parseDate("2000-12-01");
            // - relational
            dataRel = new Instances(data.attribute(4).relation(), 0);
            // -- first instance
            valsRel    = new double[2];
            valsRel[0] = Math.E + 1;
            valsRel[1] = attValsRel.indexOf("val5.4");
            dataRel.add(inst);
            // -- second instance
            valsRel    = new double[2];
            valsRel[0] = Math.E + 2;
            valsRel[1] = attValsRel.indexOf("val5.1");
            dataRel.add(inst);
            vals[4] = data.attribute(4).addRelation(dataRel);
            // add
            data.add(inst2);

            data.setClassIndex(data.numAttributes() - 1);

            // 4. output data
            for (int x = 0; x < data.numInstances(); x++)
            {
                weka.core.Instance ins = data.instance(x);
                System.Console.WriteLine(ins.value(x).ToString());
            }



            return;
        }
        public List <double> testSMOUsingWeka(string[] attributeArray, string[] classNames, double[] dataValues, string classHeader, string defaultclass, string modelName, int hiddelLayers = 7, double learningRate = 0.03, double momentum = 0.4, int decimalPlaces = 2, int trainingTime = 1000)
        {
            java.util.ArrayList classLabel = new java.util.ArrayList();

            foreach (string className in classNames)
            {
                classLabel.Add(className);
            }
            weka.core.Attribute classHeaderName = new weka.core.Attribute(classHeader, classLabel);

            java.util.ArrayList attributeList = new java.util.ArrayList();
            foreach (string attribute in attributeArray)
            {
                weka.core.Attribute newAttribute = new weka.core.Attribute(attribute);
                attributeList.Add(newAttribute);
            }
            attributeList.add(classHeaderName);
            weka.core.Instances data = new weka.core.Instances("TestInstances", attributeList, 0);

            data.setClassIndex(data.numAttributes() - 1);
            // Set instance's values for the attributes
            weka.core.Instance inst_co = new DenseInstance(data.numAttributes());
            for (int i = 0; i < data.numAttributes() - 1; i++)
            {
                inst_co.setValue(i, Math.Round(dataValues.ElementAt(i), 5));
            }

            inst_co.setValue(classHeaderName, defaultclass);
            data.add(inst_co);
            weka.core.Instance currentInst = data.get(0);
            int j = 0;

            //foreach (float value in dataValues)
            //{
            //    // double roundedValue = Math.Round(value);
            //    //var rounded = Math.Floor(value * 100) / 100;
            //    if (array.ElementAt(j) != value)
            //    {
            //        System.Console.WriteLine("Masla occur");
            //    }
            //    j++;
            //}
            //double predictedClass = cl.classifyInstance(data.get(0));

            weka.classifiers.functions.SMO clRead = new weka.classifiers.functions.SMO();
            try
            {
                java.io.File path = new java.io.File("/models/");
                clRead = loadSMOModel(modelName, path);
            }
            catch (Exception e)
            {
                //string p1 = Assembly.GetExecutingAssembly().Location;
                string ClassifierName = Path.GetFileName(Path.GetFileName(modelName));
                string Path1          = HostingEnvironment.MapPath(@"~//libs//models//" + ClassifierName);
                //string Path1 = HostingEnvironment.MapPath(@"~//libs//models//FusionCustomized.model");
                clRead = (weka.classifiers.functions.SMO)weka.core.SerializationHelper.read(modelName);
            }
            // weka.classifiers.functions.SMO clRead = loadSMOModel(modelName, path);
            clRead.setBatchSize("100");

            clRead.setCalibrator(new weka.classifiers.functions.Logistic());
            clRead.setKernel(new weka.classifiers.functions.supportVector.PolyKernel());
            clRead.setEpsilon(1.02E-12);
            clRead.setC(1.0);
            clRead.setDebug(false);
            clRead.setChecksTurnedOff(false);
            clRead.setFilterType(new SelectedTag(weka.classifiers.functions.SMO.FILTER_NORMALIZE, weka.classifiers.functions.SMO.TAGS_FILTER));

            double classValue = clRead.classifyInstance(data.get(0));

            double[] predictionDistribution = clRead.distributionForInstance(data.get(0));
            //for (int predictionDistributionIndex = 0;
            //  predictionDistributionIndex < predictionDistribution.Count();
            //  predictionDistributionIndex++)
            //{
            //    string classValueString1 = classLabel.get(predictionDistributionIndex).ToString();
            //    double prob= predictionDistribution[predictionDistributionIndex]*100;
            //    System.Console.WriteLine(classValueString1 + ":" + prob);
            //}
            List <double> prediction = new List <double>();

            prediction.Add(classValue);
            //prediction.AddRange(predictionDistribution);
            return(prediction);
        }
        public void trainSMOUsingWeka(string wekaFile, string modelName)
        {
            try
            {
                weka.core.converters.CSVLoader csvLoader = new weka.core.converters.CSVLoader();
                csvLoader.setSource(new java.io.File(wekaFile));
                weka.core.Instances insts = csvLoader.getDataSet();
                //weka.core.Instances insts = new weka.core.Instances(new java.io.FileReader(wekaFile));
                insts.setClassIndex(insts.numAttributes() - 1);

                cl = new weka.classifiers.functions.SMO();
                cl.setBatchSize("100");

                cl.setCalibrator(new weka.classifiers.functions.Logistic());
                cl.setKernel(new weka.classifiers.functions.supportVector.PolyKernel());
                cl.setEpsilon(1.02E-12);
                cl.setC(1.0);
                cl.setDebug(false);
                cl.setChecksTurnedOff(false);
                cl.setFilterType(new SelectedTag(weka.classifiers.functions.SMO.FILTER_NORMALIZE, weka.classifiers.functions.SMO.TAGS_FILTER));

                System.Console.WriteLine("Performing " + percentSplit + "% split evaluation.");

                //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);

                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);
                java.io.File        path  = new java.io.File("/models/");
                cl.buildClassifier(train);
                saveModel(cl, modelName, path);
                #region test whole set
                int numCorrect = 0;
                for (int i = 0; i < insts.numInstances(); i++)
                {
                    weka.core.Instance currentInst = insts.instance(i);
                    if (i == 12)
                    {
                        array = new List <float>();
                        foreach (float value in currentInst.toDoubleArray())
                        {
                            array.Add(value);
                        }
                    }

                    double predictedClass = cl.classifyInstance(currentInst);
                    if (predictedClass == insts.instance(i).classValue())
                    {
                        numCorrect++;
                    }
                }

                System.Console.WriteLine(numCorrect + " out of " + testSize + " correct (" +
                                         (double)((double)numCorrect / (double)testSize * 100.0) + "%)");
                #endregion
            }
            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
            }
        }
        public async Task <string> classifyTest(weka.classifiers.Classifier cl)
        {
            string a    = "";
            double rate = 0;

            try
            {
                //instsTest = Instances.mergeInstances(ins,null);

                /*if (ins.classIndex() == -1)
                 *  ins.setClassIndex(insts.numAttributes() - 1);*/

                System.Console.WriteLine("Performing " + percentSplit + "% split evaluation.");

                weka.filters.Filter normalized = new weka.filters.unsupervised.attribute.Normalize();
                normalized.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, normalized);

                //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);

                //replace missing values
                weka.filters.Filter replaceMissingValues = new weka.filters.unsupervised.attribute.ReplaceMissingValues();
                replaceMissingValues.setInputFormat(insts);
                insts = weka.filters.Filter.useFilter(insts, replaceMissingValues);


                int trainSize             = insts.numInstances() * percentSplit / 100;
                int testSize              = insts.numInstances() - trainSize;
                weka.core.Instances train = new weka.core.Instances(insts, 0, trainSize);

                cl.buildClassifier(train);

                //double label = cl.classifyInstance(instsTest.instance(0));
                double label = cl.classifyInstance(ins);
                ins.setClassValue(label);
                //instsTest.instance(0).setClassValue(label);
                a = ins.toString(ins.numAttributes() - 1);

                weka.core.SerializationHelper.write("mymodel.model", cl);
                int numCorrect = 0;
                for (int i = trainSize; i < insts.numInstances(); i++)
                {
                    weka.core.Instance currentInst    = insts.instance(i);
                    double             predictedClass = cl.classifyInstance(currentInst);
                    if (predictedClass == insts.instance(i).classValue())
                    {
                        numCorrect++;
                    }
                }

                rate = (double)((double)numCorrect / (double)testSize * 100.0);
            }
            catch (java.lang.Exception ex)
            {
                //ex.printStackTrace();
                rate = -1;
            }
            return(rate.ToString() + ";" + a ?? "");
        }
Beispiel #13
0
        public static double classifyCrossFold_Train_Test_onlySelectedClass(string classifierFileName, int baseClasses, Classifier _classifier)
        {
            double performance = 0.0;

            try
            {
                List <BrResult> results = new List <BrResult>();
                for (int singleClass = 1; singleClass <= baseClasses; singleClass++)
                {
                    string eachFileName = String.Format("{0}_{1}.arff", classifierFileName, singleClass);

                    BrResult result = new BrResult();
                    result.classNumber = singleClass;

                    FileReader          javaFileReader = new FileReader(eachFileName);
                    weka.core.Instances insts          = new weka.core.Instances(javaFileReader);
                    javaFileReader.close();

                    insts.setClassIndex(insts.numAttributes() - 1);


                    List <Result> eachResults = new List <Result>();

                    var       totalnstances  = insts.numInstances();
                    var       foldsInstances = totalnstances / 10;
                    Instances foldsData      = new Instances(insts);
                    var       folds          = 10;
                    int       numCorrect     = 0;
                    int       dataIndex      = 0;
                    for (int n = 0; n < folds; n++)
                    {
                        System.Console.WriteLine("Performing " + n + " folds");

                        Instances trainFold         = foldsData.trainCV(folds, n);
                        var       numnerOfTrainInst = trainFold.numInstances();

                        Instances testFold         = foldsData.testCV(folds, n);
                        var       numnerOfTestInst = testFold.numInstances();


                        _classifier.buildClassifier(trainFold);

                        //List<Result> eachResults = new List<Result>();
                        for (int test = 0; test < numnerOfTestInst; test++)
                        {
                            dataIndex++;
                            Result eachRow = new Result();
                            eachRow.lineIndex = 0;
                            weka.core.Instance currentInst = testFold.instance(test);

                            double predictClass = _classifier.classifyInstance(currentInst);
                            //double[] dist = _classifier.distributionForInstance(currentInst);

                            string actualClass    = testFold.classAttribute().value((int)testFold.instance(test).classValue());
                            string predictedClass = testFold.classAttribute().value((int)predictClass);

                            //var abcd = _classifier.getClass();

                            if (predictedClass == actualClass)
                            {
                                eachRow.correct = "1";
                                numCorrect++;
                            }
                            else
                            {
                                eachRow.correct = "0";
                            }
                            eachRow.lineIndex      = dataIndex;
                            eachRow.classActual    = actualClass;
                            eachRow.classPredicted = predictedClass;

                            eachResults.Add(eachRow);
                        }
                    }
                    result.classResult = eachResults;
                    results.Add(result);
                    //System.Console.WriteLine(numCorrect + " out of " + testSize + " correct (" + (double)((double)numCorrect / (double)testSize * 100.0) + "%)");
                }

                #region Evaludation Matrix
                var evaluationMatrix = new Dictionary <int, string>();

                foreach (var res in results)
                {
                    foreach (var classRes in res.classResult)
                    {
                        if (!evaluationMatrix.Keys.Contains(classRes.lineIndex))
                        {
                            evaluationMatrix[classRes.lineIndex] = classRes.correct.toString();
                        }
                        else
                        {
                            evaluationMatrix[classRes.lineIndex] = evaluationMatrix[classRes.lineIndex].toString() + "," + classRes.correct.toString();
                        }
                    }
                }
                #endregion

                #region
                int correnctlyClassified   = 0;
                int incorrenctlyClassified = 0;
                int totalData = evaluationMatrix.Count;
                foreach (var key in evaluationMatrix.Keys)
                {
                    string   multiLevelClass = evaluationMatrix[key].ToString();
                    string[] a = multiLevelClass.Split(',');

                    int classPredect = 0;
                    for (int i = 0; i < a.Length; i++)
                    {
                        if (a[i] == "0")
                        {
                            classPredect++;
                        }
                    }
                    if (classPredect == 0)
                    {
                        correnctlyClassified++;
                    }
                    else if (classPredect > 0)
                    {
                        incorrenctlyClassified++;
                    }
                }

                performance = (double)((double)correnctlyClassified / (double)totalData) * 100;
                System.Console.WriteLine(performance);
                #endregion
            }
            catch (java.lang.Exception ex)
            {
                ex.printStackTrace();
            }
            return(performance);
        }