Weka 线性回归 ClassNotFoundException

Question

String filePath = new File("").getAbsolutePath();
DataSource source = new DataSource(filePath + "\\src\\data\\data.arff");
Instances dataset = source.getDataSet();
// set class
dataset.setClassIndex(0);

// build model
**LinearRegression lr = new LinearRegression();**
lr.buildClassifier(dataset);
System.out.println(lr);

在 LinearRegression 实例化之后，我收到此错误:

Exception in thread "main" java.lang.NoClassDefFoundError: no/uib/cipr/matrix/Matrix at weka_prediction.Main_LinearRegression.main(Main_LinearRegression.java:22) Caused by: java.lang.ClassNotFoundException: no.uib.cipr.matrix.Matrix at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 1 more

我使用的是weka 3.8。

有什么想法吗？提前致谢

Answer 1

加载 weka.core 时出现问题。您只需前往 weka repository并下载并添加以下 jar:

• mtj.jar
• arpack_combined_all.jar
• 核心.jar

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