我正在尝试从 Java 中的多维数组获取 arrf 扩展输出文件。我导入了weka库,但是出现错误; The type FastVector<E> is deprecated.
我可以用什么代替 FastVector 以及如何重写下面的代码?

    import weka.core.FastVector; //Error: The type FastVector<E> is deprecated.


    int [][] myArray = new int[45194][12541];

    for (int i = 0; i < myArray.length; i++) {
        for (int j = 0; j < myArray[0].length; j++) {
            System.out.print(myArray[i][j]+" ");
        }
        System.out.println("");
    }

    int numAtts = myArray[0].length;
    FastVector atts = new FastVector(numAtts);
    for (int att = 0; att < numAtts; att++) {
        atts.addElement(new Attribute("Attribute" + att, att));
    }

    int numInstances = myArray.length;
    Instances dataset = new Instances("Dataset", atts, numInstances);
    for (int inst = 0; inst < numInstances; inst++) {
        dataset.add(new Instance(1.0, myArray[inst]));   //Error: Cannot instantiate the type Instance
    }

    BufferedWriter writer = new BufferedWriter(new FileWriter("test.arff"));
    writer.write(dataset.toString());
    writer.flush();
    writer.close();

最佳答案

Weka 现在大多数地方都使用类型化的 ArrayLists。您可以为此使用 ArrayList<Attribute>:

ArrayList<Attribute> atts = new ArrayList<Attribute>();
    for (int att = 0; att < numAtts; att++) {
        atts.add(new Attribute("Attribute" + att, att));
    }

关于java - 不推荐使用FastVector <E>类型,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/26878103/

10-13 06:18