Question

我正在尝试通过TextDirectoryToArff.java将txt文件转换为arff。我在Windows操作系统上使用eclipse，用法告诉我TextDirectoryToArff <directory path>。但我不确定这意味着什么。有人可以帮我这个程序吗？

TextDirectoryToArff.java： -

import java.io.*;
import weka.core.*;

/**
 * Builds an arff dataset from the documents in a given directory.
 * Assumes that the file names for the documents end with ".txt".
 *
 * Usage:<p>
 *
 * TextDirectoryToArff <directory path><p>
 *
 * @author Richard Kirkby (rkirkby at cs.waikato.ac.nz)
 * @version 1.0
 */
public class TextDirectoryToArff {

  public Instances createDataset(String directoryPath) throws Exception {

    FastVector atts = new FastVector(2);
    atts.addElement(new Attribute("filename", (FastVector) null));
    atts.addElement(new Attribute("contents", (FastVector) null));
    Instances data = new Instances("text_files_in_" + directoryPath, atts, 0);

    File dir = new File(directoryPath);
    String[] files = dir.list();
    for (int i = 0; i < files.length; i++) {
      if (files[i].endsWith(".txt")) {
    try {
      double[] newInst = new double[2];
      newInst[0] = (double)data.attribute(0).addStringValue(files[i]);
      File txt = new File(directoryPath + File.separator + files[i]);  
      InputStreamReader is;
      is = new InputStreamReader(new FileInputStream(txt));
      StringBuffer txtStr = new StringBuffer();
      int c;
      while ((c = is.read()) != -1) {
        txtStr.append((char)c);
      }
      newInst[1] = (double)data.attribute(1).addStringValue(txtStr.toString());
      data.add(new Instance(1.0, newInst));
    } catch (Exception e) {
      //System.err.println("failed to convert file: " + directoryPath + File.separator + files[i]);
    }
      }
    }
    return data;
  }

  public static void main(String[] args) {

    if (args.length == 1) {
      TextDirectoryToArff tdta = new TextDirectoryToArff();
      try {
          Instances dataset = tdta.createDataset(args[0]);
          System.out.println(dataset);
          } 
      catch (Exception e) {
          System.err.println(e.getMessage());
          e.printStackTrace();
          }
    }

    else {
      System.out.println("Usage: java TextDirectoryToArff <directory name>");
    }

  }
}

Answer 1

Weka要求您使用JAVA执行TextDirectoryToArff作为目录的参数传递。

您有两种选择：

1）生成名为“TextDirectoryToArff”的JAR，然后通过Windows中的控制台使用JAVA并执行java TextDirectoryToArff将目录作为paratemer传递。

2）从Eclipse中你可以直接传递你的目录，比如修改数据集，然后进行Run，run

 Instances dataset = tdta.createDataset(args[0]);

要：

 Instances dataset = tdta.createDataset("C:\\yourDir");

通过TextDirectoryToArff.java将txt文件转换为arff文件

1 个答案: