Weka 开发［1］－Instances类
package com.cizito.weka.study;import java.io.FileReader;import weka.core.Instances; public class InstanceTest { public static void main(String[] args) throws Exception { Instances instances = getFileInstances( "D:/ProgramFiles/Weka-3-6/data/contact-lenses.arff"); //把数据集全部输入出 //用numInstances可以获得数据集中有多少样本 for( int i = 0; i < instances.numInstances(); i++ ) { //instance( i )是得到第i个样本 System.out.println( instances.instance( i ) ); } } public static Instances getFileInstances( String fileName ) throws Exception { DataSource frData = new DataSource( fileName ); Instances data = frData.getDataSet(); return data; }}

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