| career | drupal | java | mac | mysql | perl | scala | uml | unix  

Commons Math example source code file (

This example Commons Math source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Math tags/keywords

before, before, multiplelinearregression, multiplelinearregression, multiplelinearregressionabstracttest, multiplelinearregressionabstracttest, test, test

The Commons Math source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.commons.math.stat.regression;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import org.junit.Before;
import org.junit.Test;

public abstract class MultipleLinearRegressionAbstractTest {

    protected MultipleLinearRegression regression;

    public void setUp(){
        regression = createRegression();

    protected abstract MultipleLinearRegression createRegression();

    protected abstract int getNumberOfRegressors();

    protected abstract int getSampleSize();

    public void canEstimateRegressionParameters(){
        double[] beta = regression.estimateRegressionParameters();
        assertEquals(getNumberOfRegressors(), beta.length);

    public void canEstimateResiduals(){
        double[] e = regression.estimateResiduals();
        assertEquals(getSampleSize(), e.length);

    public void canEstimateRegressionParametersVariance(){
        double[][] variance = regression.estimateRegressionParametersVariance();
        assertEquals(getNumberOfRegressors(), variance.length);

    public void canEstimateRegressandVariance(){
        if (getSampleSize() > getNumberOfRegressors()) {
            double variance = regression.estimateRegressandVariance();
            assertTrue(variance > 0.0);


Other Commons Math examples (source code examples)

Here is a short list of links related to this Commons Math source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller


new blog posts


Copyright 1998-2021 Alvin Alexander,
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.