通过C#运行weka

Question

我正在通过C#代码运行weka,下面给出了代码.

 using System;

 class MainClass
 {
      public static void Main(string[] args)
 {
     Console.WriteLine("Hello Java, from C#!");
     classifyTest();
  }

  const int percentSplit = 66;
  public static void classifyTest()
  {
     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.trees.J48();
         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);

         cl.buildClassifier(train);
         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++;
         }
         Console.WriteLine(numCorrect + " out of " + testSize + " correct (" +
                    (double)((double)numCorrect / (double)testSize * 100.0) + "%)");
     }
     catch (java.lang.Exception ex)
     {
         ex.printStackTrace();
     }
 }

 }
 //end of file Main.cs

我添加了Weka.dll和ikvm.JDK.Core.dll文件.但是当我尝试运行它时,我收到此错误

'java.io.file'的类型初始值设定项引发异常

可能是什么问题呢？

Answer 1

问题是你没有添加所有必需的引用,你必须添加所有以ikvm.OpenJDK开头的dll文件和文件IKVM.Runtime.dll也确保你使用weka.jar转换为weka.dll IKVM