我正在尝试从Java的多维数组中获取arrf扩展输出文件。我已经导入了weka库,但是出现了一个错误:FastVector<E>类型已过时。
我可以使用什么替代FastVector,并且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();
Instance
是一个接口。你不能直接创建一个接口的实例,但是你可以创建一个实现的实例。例如,SparseInstance
。 - Obicere