在 java 中使用通用数学库

Question

我是 java 的新手，现在我想将 普通线性回归 应用于两个系列，比如 [1, 2, 3, 4, 5]和 [2, 3, 4, 5, 6].

我了解到有一个名为 common math 的库。但是，文档很难看懂，有没有例子在java中做简单的普通线性回归？

Answer 1

与math3 library you can do the way below. Sample is based on SimpleRegression class:

import org.apache.commons.math3.stat.regression.SimpleRegression;

public class Try_Regression {

    public static void main(String[] args) {

        // creating regression object, passing true to have intercept term
        SimpleRegression simpleRegression = new SimpleRegression(true);

        // passing data to the model
        // model will be fitted automatically by the class 
        simpleRegression.addData(new double[][] {
                {1, 2},
                {2, 3},
                {3, 4},
                {4, 5},
                {5, 6}
        });

        // querying for model parameters
        System.out.println("slope = " + simpleRegression.getSlope());
        System.out.println("intercept = " + simpleRegression.getIntercept());

        // trying to run model for unknown data
        System.out.println("prediction for 1.5 = " + simpleRegression.predict(1.5));

    }

}

在 java 中使用通用数学库

use common math library in java

java

linear-regression