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Java example source code file (TestUtils.java)

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

Learn more about this Java project at its project page.

Java - Java tags/keywords

collection, dimensionmismatchexception, gtest, insufficientdataexception, kolmogorovsmirnovtest, maxcountexceededexception, nodataexception, notpositiveexception, notstrictlypositiveexception, nullargumentexception, numberistoosmallexception, outofrangeexception, statisticalsummary, util, zeroexception

The TestUtils.java Java example 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.commons.math3.stat.inference;

import java.util.Collection;

import org.apache.commons.math3.distribution.RealDistribution;
import org.apache.commons.math3.exception.ConvergenceException;
import org.apache.commons.math3.exception.DimensionMismatchException;
import org.apache.commons.math3.exception.InsufficientDataException;
import org.apache.commons.math3.exception.MaxCountExceededException;
import org.apache.commons.math3.exception.NoDataException;
import org.apache.commons.math3.exception.NotPositiveException;
import org.apache.commons.math3.exception.NotStrictlyPositiveException;
import org.apache.commons.math3.exception.NullArgumentException;
import org.apache.commons.math3.exception.NumberIsTooSmallException;
import org.apache.commons.math3.exception.OutOfRangeException;
import org.apache.commons.math3.exception.ZeroException;
import org.apache.commons.math3.stat.descriptive.StatisticalSummary;

/**
 * A collection of static methods to create inference test instances or to
 * perform inference tests.
 *
 * @since 1.1
 */
public class TestUtils  {

    /** Singleton TTest instance. */
    private static final TTest T_TEST = new TTest();

    /** Singleton ChiSquareTest instance. */
    private static final ChiSquareTest CHI_SQUARE_TEST = new ChiSquareTest();

    /** Singleton OneWayAnova instance. */
    private static final OneWayAnova ONE_WAY_ANANOVA = new OneWayAnova();

    /** Singleton G-Test instance. */
    private static final GTest G_TEST = new GTest();

    /** Singleton K-S test instance */
    private static final KolmogorovSmirnovTest KS_TEST = new KolmogorovSmirnovTest();

    /**
     * Prevent instantiation.
     */
    private TestUtils() {
        super();
    }

    // CHECKSTYLE: stop JavadocMethodCheck

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#homoscedasticT(double[], double[])
     */
    public static double homoscedasticT(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.homoscedasticT(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#homoscedasticT(org.apache.commons.math3.stat.descriptive.StatisticalSummary, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double homoscedasticT(final StatisticalSummary sampleStats1,
                                        final StatisticalSummary sampleStats2)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.homoscedasticT(sampleStats1, sampleStats2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#homoscedasticTTest(double[], double[], double)
     */
    public static boolean homoscedasticTTest(final double[] sample1, final double[] sample2,
                                             final double alpha)
        throws NullArgumentException, NumberIsTooSmallException,
        OutOfRangeException, MaxCountExceededException {
        return T_TEST.homoscedasticTTest(sample1, sample2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#homoscedasticTTest(double[], double[])
     */
    public static double homoscedasticTTest(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NumberIsTooSmallException, MaxCountExceededException {
        return T_TEST.homoscedasticTTest(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#homoscedasticTTest(org.apache.commons.math3.stat.descriptive.StatisticalSummary, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double homoscedasticTTest(final StatisticalSummary sampleStats1,
                                            final StatisticalSummary sampleStats2)
        throws NullArgumentException, NumberIsTooSmallException, MaxCountExceededException {
        return T_TEST.homoscedasticTTest(sampleStats1, sampleStats2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#pairedT(double[], double[])
     */
    public static double pairedT(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NoDataException,
        DimensionMismatchException, NumberIsTooSmallException {
        return T_TEST.pairedT(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#pairedTTest(double[], double[], double)
     */
    public static boolean pairedTTest(final double[] sample1, final double[] sample2,
                                      final double alpha)
        throws NullArgumentException, NoDataException, DimensionMismatchException,
        NumberIsTooSmallException, OutOfRangeException, MaxCountExceededException {
        return T_TEST.pairedTTest(sample1, sample2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#pairedTTest(double[], double[])
     */
    public static double pairedTTest(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NoDataException, DimensionMismatchException,
        NumberIsTooSmallException, MaxCountExceededException {
        return T_TEST.pairedTTest(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#t(double, double[])
     */
    public static double t(final double mu, final double[] observed)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.t(mu, observed);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#t(double, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double t(final double mu, final StatisticalSummary sampleStats)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.t(mu, sampleStats);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#t(double[], double[])
     */
    public static double t(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.t(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#t(org.apache.commons.math3.stat.descriptive.StatisticalSummary, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double t(final StatisticalSummary sampleStats1,
                           final StatisticalSummary sampleStats2)
        throws NullArgumentException, NumberIsTooSmallException {
        return T_TEST.t(sampleStats1, sampleStats2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double, double[], double)
     */
    public static boolean tTest(final double mu, final double[] sample, final double alpha)
        throws NullArgumentException, NumberIsTooSmallException,
        OutOfRangeException, MaxCountExceededException {
        return T_TEST.tTest(mu, sample, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double, double[])
     */
    public static double tTest(final double mu, final double[] sample)
        throws NullArgumentException, NumberIsTooSmallException,
        MaxCountExceededException {
        return T_TEST.tTest(mu, sample);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double, org.apache.commons.math3.stat.descriptive.StatisticalSummary, double)
     */
    public static boolean tTest(final double mu, final StatisticalSummary sampleStats,
                                final double alpha)
        throws NullArgumentException, NumberIsTooSmallException,
        OutOfRangeException, MaxCountExceededException {
        return T_TEST.tTest(mu, sampleStats, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double tTest(final double mu, final StatisticalSummary sampleStats)
        throws NullArgumentException, NumberIsTooSmallException,
        MaxCountExceededException {
        return T_TEST.tTest(mu, sampleStats);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double[], double[], double)
     */
    public static boolean tTest(final double[] sample1, final double[] sample2,
                                final double alpha)
        throws NullArgumentException, NumberIsTooSmallException,
        OutOfRangeException, MaxCountExceededException {
        return T_TEST.tTest(sample1, sample2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(double[], double[])
     */
    public static double tTest(final double[] sample1, final double[] sample2)
        throws NullArgumentException, NumberIsTooSmallException,
        MaxCountExceededException {
        return T_TEST.tTest(sample1, sample2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(org.apache.commons.math3.stat.descriptive.StatisticalSummary, org.apache.commons.math3.stat.descriptive.StatisticalSummary, double)
     */
    public static boolean tTest(final StatisticalSummary sampleStats1,
                                final StatisticalSummary sampleStats2,
                                final double alpha)
        throws NullArgumentException, NumberIsTooSmallException,
        OutOfRangeException, MaxCountExceededException {
        return T_TEST.tTest(sampleStats1, sampleStats2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.TTest#tTest(org.apache.commons.math3.stat.descriptive.StatisticalSummary, org.apache.commons.math3.stat.descriptive.StatisticalSummary)
     */
    public static double tTest(final StatisticalSummary sampleStats1,
                               final StatisticalSummary sampleStats2)
        throws NullArgumentException, NumberIsTooSmallException,
        MaxCountExceededException {
        return T_TEST.tTest(sampleStats1, sampleStats2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquare(double[], long[])
     */
    public static double chiSquare(final double[] expected, final long[] observed)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException {
        return CHI_SQUARE_TEST.chiSquare(expected, observed);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquare(long[][])
     */
    public static double chiSquare(final long[][] counts)
        throws NullArgumentException, NotPositiveException,
        DimensionMismatchException {
        return CHI_SQUARE_TEST.chiSquare(counts);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTest(double[], long[], double)
     */
    public static boolean chiSquareTest(final double[] expected, final long[] observed,
                                        final double alpha)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException, OutOfRangeException, MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTest(expected, observed, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTest(double[], long[])
     */
    public static double chiSquareTest(final double[] expected, final long[] observed)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException, MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTest(expected, observed);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTest(long[][], double)
     */
    public static boolean chiSquareTest(final long[][] counts, final double alpha)
        throws NullArgumentException, DimensionMismatchException,
        NotPositiveException, OutOfRangeException, MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTest(counts, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTest(long[][])
     */
    public static double chiSquareTest(final long[][] counts)
        throws NullArgumentException, DimensionMismatchException,
        NotPositiveException, MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTest(counts);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareDataSetsComparison(long[], long[])
     *
     * @since 1.2
     */
    public static double chiSquareDataSetsComparison(final long[] observed1,
                                                     final long[] observed2)
        throws DimensionMismatchException, NotPositiveException, ZeroException {
        return CHI_SQUARE_TEST.chiSquareDataSetsComparison(observed1, observed2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTestDataSetsComparison(long[], long[])
     *
     * @since 1.2
     */
    public static double chiSquareTestDataSetsComparison(final long[] observed1,
                                                         final long[] observed2)
        throws DimensionMismatchException, NotPositiveException, ZeroException,
        MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTestDataSetsComparison(observed1, observed2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.ChiSquareTest#chiSquareTestDataSetsComparison(long[], long[], double)
     *
     * @since 1.2
     */
    public static boolean chiSquareTestDataSetsComparison(final long[] observed1,
                                                          final long[] observed2,
                                                          final double alpha)
        throws DimensionMismatchException, NotPositiveException,
        ZeroException, OutOfRangeException, MaxCountExceededException {
        return CHI_SQUARE_TEST.chiSquareTestDataSetsComparison(observed1, observed2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.OneWayAnova#anovaFValue(Collection)
     *
     * @since 1.2
     */
    public static double oneWayAnovaFValue(final Collection<double[]> categoryData)
        throws NullArgumentException, DimensionMismatchException {
        return ONE_WAY_ANANOVA.anovaFValue(categoryData);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.OneWayAnova#anovaPValue(Collection)
     *
     * @since 1.2
     */
    public static double oneWayAnovaPValue(final Collection<double[]> categoryData)
        throws NullArgumentException, DimensionMismatchException,
        ConvergenceException, MaxCountExceededException {
        return ONE_WAY_ANANOVA.anovaPValue(categoryData);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.OneWayAnova#anovaTest(Collection,double)
     *
     * @since 1.2
     */
    public static boolean oneWayAnovaTest(final Collection<double[]> categoryData,
                                          final double alpha)
        throws NullArgumentException, DimensionMismatchException,
        OutOfRangeException, ConvergenceException, MaxCountExceededException {
        return ONE_WAY_ANANOVA.anovaTest(categoryData, alpha);
    }

     /**
     * @see org.apache.commons.math3.stat.inference.GTest#g(double[], long[])
     * @since 3.1
     */
    public static double g(final double[] expected, final long[] observed)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException {
        return G_TEST.g(expected, observed);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.GTest#gTest( double[],  long[] )
     * @since 3.1
     */
    public static double gTest(final double[] expected, final long[] observed)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException, MaxCountExceededException {
        return G_TEST.gTest(expected, observed);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.GTest#gTestIntrinsic(double[], long[] )
     * @since 3.1
     */
    public static double gTestIntrinsic(final double[] expected, final long[] observed)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException, MaxCountExceededException {
        return G_TEST.gTestIntrinsic(expected, observed);
    }

     /**
     * @see org.apache.commons.math3.stat.inference.GTest#gTest( double[],long[],double)
     * @since 3.1
     */
    public static boolean gTest(final double[] expected, final long[] observed,
                                final double alpha)
        throws NotPositiveException, NotStrictlyPositiveException,
        DimensionMismatchException, OutOfRangeException, MaxCountExceededException {
        return G_TEST.gTest(expected, observed, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.GTest#gDataSetsComparison(long[], long[])
     * @since 3.1
     */
    public static double gDataSetsComparison(final long[] observed1,
                                                  final long[] observed2)
        throws DimensionMismatchException, NotPositiveException, ZeroException {
        return G_TEST.gDataSetsComparison(observed1, observed2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.GTest#rootLogLikelihoodRatio(long, long, long, long)
     * @since 3.1
     */
    public static double rootLogLikelihoodRatio(final long k11, final long k12, final long k21, final long k22)
        throws DimensionMismatchException, NotPositiveException, ZeroException {
        return G_TEST.rootLogLikelihoodRatio(k11, k12, k21, k22);
    }


    /**
     * @see org.apache.commons.math3.stat.inference.GTest#gTestDataSetsComparison(long[], long[])
     * @since 3.1
     */
    public static double gTestDataSetsComparison(final long[] observed1,
                                                        final long[] observed2)
        throws DimensionMismatchException, NotPositiveException, ZeroException,
        MaxCountExceededException {
        return G_TEST.gTestDataSetsComparison(observed1, observed2);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.GTest#gTestDataSetsComparison(long[],long[],double)
     * @since 3.1
     */
    public static boolean gTestDataSetsComparison(final long[] observed1,
                                                  final long[] observed2,
                                                  final double alpha)
        throws DimensionMismatchException, NotPositiveException,
        ZeroException, OutOfRangeException, MaxCountExceededException {
        return G_TEST.gTestDataSetsComparison(observed1, observed2, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovStatistic(RealDistribution, double[])
     * @since 3.3
     */
    public static double kolmogorovSmirnovStatistic(RealDistribution dist, double[] data)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovStatistic(dist, data);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovTest(RealDistribution, double[])
     * @since 3.3
     */
    public static double kolmogorovSmirnovTest(RealDistribution dist, double[] data)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovTest(dist, data);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovTest(RealDistribution, double[], boolean)
     * @since 3.3
     */
    public static double kolmogorovSmirnovTest(RealDistribution dist, double[] data, boolean strict)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovTest(dist, data, strict);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovTest(RealDistribution, double[], double)
     * @since 3.3
     */
    public static boolean kolmogorovSmirnovTest(RealDistribution dist, double[] data, double alpha)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovTest(dist, data, alpha);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovStatistic(double[], double[])
     * @since 3.3
     */
    public static double kolmogorovSmirnovStatistic(double[] x, double[] y)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovStatistic(x, y);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovTest(double[], double[])
     * @since 3.3
     */
    public static double kolmogorovSmirnovTest(double[] x, double[] y)
            throws InsufficientDataException, NullArgumentException {
        return KS_TEST.kolmogorovSmirnovTest(x, y);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#kolmogorovSmirnovTest(double[], double[], boolean)
     * @since 3.3
     */
    public static double kolmogorovSmirnovTest(double[] x, double[] y, boolean strict)
            throws InsufficientDataException, NullArgumentException  {
        return KS_TEST.kolmogorovSmirnovTest(x, y, strict);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#exactP(double, int, int, boolean)
     * @since 3.3
     */
    public static double exactP(double d, int m, int n, boolean strict) {
        return KS_TEST.exactP(d, n, m, strict);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#approximateP(double, int, int)
     * @since 3.3
     */
    public static double approximateP(double d, int n, int m) {
        return KS_TEST.approximateP(d, n, m);
    }

    /**
     * @see org.apache.commons.math3.stat.inference.KolmogorovSmirnovTest#monteCarloP(double, int, int, boolean, int)
     * @since 3.3
     */
    public static double monteCarloP(double d, int n, int m, boolean strict, int iterations) {
        return KS_TEST.monteCarloP(d, n, m, strict, iterations);
    }


    // CHECKSTYLE: resume JavadocMethodCheck

}

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