java - 无法运行执行weka命令的java程序

Question

我正在尝试运行一个执行Weka命令的Java程序。我正在运行的程序位于 http://weka.wikispaces.com/Use+WEKA+in+your+Java+code ，在增量分类器下，“一个工作示例是 IncrementalClassifier.java。”

这是我的代码，我更改了arff的地址:

import weka.core.Instance;
import weka.core.Instances;
import weka.core.converters.ArffLoader;
import weka.classifiers.bayes.NaiveBayesUpdateable;

import java.io.File;

/**
 * This example trains NaiveBayes incrementally on data obtained
 * from the ArffLoader.
 *
 * @author FracPete (fracpete at waikato dot ac dot nz)
 */
public class IncrementalClassifier {

  /**
   * Expects an ARFF file as first argument (class attribute is assumed
   * to be the last attribute).
   *
   * @param args        the commandline arguments
   * @throws Exception  if something goes wrong
   */
  public static void main(String[] args) throws Exception {
    // load data
    ArffLoader loader = new ArffLoader();
    loader.setFile(new File("C:\\Program Files\\Weka-3-6\\10random+5.arff"));
    Instances structure = loader.getStructure();
    structure.setClassIndex(structure.numAttributes() - 1);

    // train NaiveBayes
    NaiveBayesUpdateable nb = new NaiveBayesUpdateable();
    nb.buildClassifier(structure);
    Instance current;
    while ((current = loader.getNextInstance(structure)) != null)
      nb.updateClassifier(current);

    // output generated model
    System.out.println(nb);
  }
}

我收到的错误是:

java.io.FileNotFoundException: \iris.2.arff (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.io.FileInputStream.<init>(Unknown Source)
    at java.io.FileReader.<init>(Unknown Source)
    at weka.classifiers.bayes.net.ADNode.main(ADNode.java:270)

如何进行？

谢谢

Answer 1

该文件 (iris.2.arff) 似乎已硬编码到源代码中，如 here 所示。我猜想这个文件是随发行版一起提供的，但位置不正确。或者您可能调用了错误的方法。