Raymond | dee0849 | 2015-04-02 10:43:13 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
| 3 | * contributor license agreements. See the NOTICE file distributed with |
| 4 | * this work for additional information regarding copyright ownership. |
| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
| 6 | * (the "License"); you may not use this file except in compliance with |
| 7 | * the License. You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | package org.apache.commons.math.stat.inference; |
| 18 | |
| 19 | import java.util.Collection; |
| 20 | import org.apache.commons.math.MathException; |
| 21 | import org.apache.commons.math.stat.descriptive.StatisticalSummary; |
| 22 | |
| 23 | /** |
| 24 | * A collection of static methods to create inference test instances or to |
| 25 | * perform inference tests. |
| 26 | * |
| 27 | * <p> |
| 28 | * The set methods are not compatible with using the class in multiple threads, |
| 29 | * and have therefore been deprecated (along with the getters). |
| 30 | * The setters and getters will be removed in version 3.0. |
| 31 | * |
| 32 | * @since 1.1 |
| 33 | * @version $Revision: 1067582 $ $Date: 2011-02-06 04:55:32 +0100 (dim. 06 févr. 2011) $ |
| 34 | */ |
| 35 | public class TestUtils { |
| 36 | |
| 37 | /** Singleton TTest instance using default implementation. */ |
| 38 | private static TTest tTest = new TTestImpl(); |
| 39 | |
| 40 | /** Singleton ChiSquareTest instance using default implementation. */ |
| 41 | private static ChiSquareTest chiSquareTest = |
| 42 | new ChiSquareTestImpl(); |
| 43 | |
| 44 | /** Singleton ChiSquareTest instance using default implementation. */ |
| 45 | private static UnknownDistributionChiSquareTest unknownDistributionChiSquareTest = |
| 46 | new ChiSquareTestImpl(); |
| 47 | |
| 48 | /** Singleton OneWayAnova instance using default implementation. */ |
| 49 | private static OneWayAnova oneWayAnova = |
| 50 | new OneWayAnovaImpl(); |
| 51 | |
| 52 | /** |
| 53 | * Prevent instantiation. |
| 54 | */ |
| 55 | protected TestUtils() { |
| 56 | super(); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Set the (singleton) TTest instance. |
| 61 | * |
| 62 | * @param chiSquareTest the new instance to use |
| 63 | * @since 1.2 |
| 64 | * @deprecated 2.2 will be removed in 3.0 - not compatible with use from multiple threads |
| 65 | */ |
| 66 | @Deprecated |
| 67 | public static void setChiSquareTest(TTest chiSquareTest) { |
| 68 | TestUtils.tTest = chiSquareTest; |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * Return a (singleton) TTest instance. Does not create a new instance. |
| 73 | * |
| 74 | * @return a TTest instance |
| 75 | * @deprecated 2.2 will be removed in 3.0 |
| 76 | */ |
| 77 | @Deprecated |
| 78 | public static TTest getTTest() { |
| 79 | return tTest; |
| 80 | } |
| 81 | |
| 82 | /** |
| 83 | * Set the (singleton) ChiSquareTest instance. |
| 84 | * |
| 85 | * @param chiSquareTest the new instance to use |
| 86 | * @since 1.2 |
| 87 | * @deprecated 2.2 will be removed in 3.0 - not compatible with use from multiple threads |
| 88 | */ |
| 89 | @Deprecated |
| 90 | public static void setChiSquareTest(ChiSquareTest chiSquareTest) { |
| 91 | TestUtils.chiSquareTest = chiSquareTest; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * Return a (singleton) ChiSquareTest instance. Does not create a new instance. |
| 96 | * |
| 97 | * @return a ChiSquareTest instance |
| 98 | * @deprecated 2.2 will be removed in 3.0 |
| 99 | */ |
| 100 | @Deprecated |
| 101 | public static ChiSquareTest getChiSquareTest() { |
| 102 | return chiSquareTest; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Set the (singleton) UnknownDistributionChiSquareTest instance. |
| 107 | * |
| 108 | * @param unknownDistributionChiSquareTest the new instance to use |
| 109 | * @since 1.2 |
| 110 | * @deprecated 2.2 will be removed in 3.0 - not compatible with use from multiple threads |
| 111 | */ |
| 112 | @Deprecated |
| 113 | public static void setUnknownDistributionChiSquareTest(UnknownDistributionChiSquareTest unknownDistributionChiSquareTest) { |
| 114 | TestUtils.unknownDistributionChiSquareTest = unknownDistributionChiSquareTest; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Return a (singleton) UnknownDistributionChiSquareTest instance. Does not create a new instance. |
| 119 | * |
| 120 | * @return a UnknownDistributionChiSquareTest instance |
| 121 | * @deprecated 2.2 will be removed in 3.0 |
| 122 | */ |
| 123 | @Deprecated |
| 124 | public static UnknownDistributionChiSquareTest getUnknownDistributionChiSquareTest() { |
| 125 | return unknownDistributionChiSquareTest; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Set the (singleton) OneWayAnova instance |
| 130 | * |
| 131 | * @param oneWayAnova the new instance to use |
| 132 | * @since 1.2 |
| 133 | * @deprecated 2.2 will be removed in 3.0 - not compatible with use from multiple threads |
| 134 | */ |
| 135 | @Deprecated |
| 136 | public static void setOneWayAnova(OneWayAnova oneWayAnova) { |
| 137 | TestUtils.oneWayAnova = oneWayAnova; |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Return a (singleton) OneWayAnova instance. Does not create a new instance. |
| 142 | * |
| 143 | * @return a OneWayAnova instance |
| 144 | * @since 1.2 |
| 145 | * @deprecated 2.2 will be removed in 3.0 |
| 146 | */ |
| 147 | @Deprecated |
| 148 | public static OneWayAnova getOneWayAnova() { |
| 149 | return oneWayAnova; |
| 150 | } |
| 151 | |
| 152 | |
| 153 | // CHECKSTYLE: stop JavadocMethodCheck |
| 154 | |
| 155 | /** |
| 156 | * @see org.apache.commons.math.stat.inference.TTest#homoscedasticT(double[], double[]) |
| 157 | */ |
| 158 | public static double homoscedasticT(double[] sample1, double[] sample2) |
| 159 | throws IllegalArgumentException { |
| 160 | return tTest.homoscedasticT(sample1, sample2); |
| 161 | } |
| 162 | |
| 163 | /** |
| 164 | * @see org.apache.commons.math.stat.inference.TTest#homoscedasticT(org.apache.commons.math.stat.descriptive.StatisticalSummary, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 165 | */ |
| 166 | public static double homoscedasticT(StatisticalSummary sampleStats1, |
| 167 | StatisticalSummary sampleStats2) |
| 168 | throws IllegalArgumentException { |
| 169 | return tTest.homoscedasticT(sampleStats1, sampleStats2); |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * @see org.apache.commons.math.stat.inference.TTest#homoscedasticTTest(double[], double[], double) |
| 174 | */ |
| 175 | public static boolean homoscedasticTTest(double[] sample1, double[] sample2, |
| 176 | double alpha) |
| 177 | throws IllegalArgumentException, MathException { |
| 178 | return tTest. homoscedasticTTest(sample1, sample2, alpha); |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * @see org.apache.commons.math.stat.inference.TTest#homoscedasticTTest(double[], double[]) |
| 183 | */ |
| 184 | public static double homoscedasticTTest(double[] sample1, double[] sample2) |
| 185 | throws IllegalArgumentException, MathException { |
| 186 | return tTest.homoscedasticTTest(sample1, sample2); |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @see org.apache.commons.math.stat.inference.TTest#homoscedasticTTest(org.apache.commons.math.stat.descriptive.StatisticalSummary, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 191 | */ |
| 192 | public static double homoscedasticTTest(StatisticalSummary sampleStats1, |
| 193 | StatisticalSummary sampleStats2) |
| 194 | throws IllegalArgumentException, MathException { |
| 195 | return tTest.homoscedasticTTest(sampleStats1, sampleStats2); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * @see org.apache.commons.math.stat.inference.TTest#pairedT(double[], double[]) |
| 200 | */ |
| 201 | public static double pairedT(double[] sample1, double[] sample2) |
| 202 | throws IllegalArgumentException, MathException { |
| 203 | return tTest.pairedT(sample1, sample2); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * @see org.apache.commons.math.stat.inference.TTest#pairedTTest(double[], double[], double) |
| 208 | */ |
| 209 | public static boolean pairedTTest(double[] sample1, double[] sample2, |
| 210 | double alpha) |
| 211 | throws IllegalArgumentException, MathException { |
| 212 | return tTest.pairedTTest(sample1, sample2, alpha); |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * @see org.apache.commons.math.stat.inference.TTest#pairedTTest(double[], double[]) |
| 217 | */ |
| 218 | public static double pairedTTest(double[] sample1, double[] sample2) |
| 219 | throws IllegalArgumentException, MathException { |
| 220 | return tTest.pairedTTest(sample1, sample2); |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * @see org.apache.commons.math.stat.inference.TTest#t(double, double[]) |
| 225 | */ |
| 226 | public static double t(double mu, double[] observed) |
| 227 | throws IllegalArgumentException { |
| 228 | return tTest.t(mu, observed); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * @see org.apache.commons.math.stat.inference.TTest#t(double, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 233 | */ |
| 234 | public static double t(double mu, StatisticalSummary sampleStats) |
| 235 | throws IllegalArgumentException { |
| 236 | return tTest.t(mu, sampleStats); |
| 237 | } |
| 238 | |
| 239 | /** |
| 240 | * @see org.apache.commons.math.stat.inference.TTest#t(double[], double[]) |
| 241 | */ |
| 242 | public static double t(double[] sample1, double[] sample2) |
| 243 | throws IllegalArgumentException { |
| 244 | return tTest.t(sample1, sample2); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * @see org.apache.commons.math.stat.inference.TTest#t(org.apache.commons.math.stat.descriptive.StatisticalSummary, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 249 | */ |
| 250 | public static double t(StatisticalSummary sampleStats1, |
| 251 | StatisticalSummary sampleStats2) |
| 252 | throws IllegalArgumentException { |
| 253 | return tTest.t(sampleStats1, sampleStats2); |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double, double[], double) |
| 258 | */ |
| 259 | public static boolean tTest(double mu, double[] sample, double alpha) |
| 260 | throws IllegalArgumentException, MathException { |
| 261 | return tTest.tTest(mu, sample, alpha); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double, double[]) |
| 266 | */ |
| 267 | public static double tTest(double mu, double[] sample) |
| 268 | throws IllegalArgumentException, MathException { |
| 269 | return tTest.tTest(mu, sample); |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double, org.apache.commons.math.stat.descriptive.StatisticalSummary, double) |
| 274 | */ |
| 275 | public static boolean tTest(double mu, StatisticalSummary sampleStats, |
| 276 | double alpha) |
| 277 | throws IllegalArgumentException, MathException { |
| 278 | return tTest. tTest(mu, sampleStats, alpha); |
| 279 | } |
| 280 | |
| 281 | /** |
| 282 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 283 | */ |
| 284 | public static double tTest(double mu, StatisticalSummary sampleStats) |
| 285 | throws IllegalArgumentException, MathException { |
| 286 | return tTest.tTest(mu, sampleStats); |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double[], double[], double) |
| 291 | */ |
| 292 | public static boolean tTest(double[] sample1, double[] sample2, double alpha) |
| 293 | throws IllegalArgumentException, MathException { |
| 294 | return tTest.tTest(sample1, sample2, alpha); |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * @see org.apache.commons.math.stat.inference.TTest#tTest(double[], double[]) |
| 299 | */ |
| 300 | public static double tTest(double[] sample1, double[] sample2) |
| 301 | throws IllegalArgumentException, MathException { |
| 302 | return tTest.tTest(sample1, sample2); |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * @see org.apache.commons.math.stat.inference.TTest#tTest(org.apache.commons.math.stat.descriptive.StatisticalSummary, org.apache.commons.math.stat.descriptive.StatisticalSummary, double) |
| 307 | */ |
| 308 | public static boolean tTest(StatisticalSummary sampleStats1, |
| 309 | StatisticalSummary sampleStats2, double alpha) |
| 310 | throws IllegalArgumentException, MathException { |
| 311 | return tTest. tTest(sampleStats1, sampleStats2, alpha); |
| 312 | } |
| 313 | |
| 314 | /** |
| 315 | * @see org.apache.commons.math.stat.inference.TTest#tTest(org.apache.commons.math.stat.descriptive.StatisticalSummary, org.apache.commons.math.stat.descriptive.StatisticalSummary) |
| 316 | */ |
| 317 | public static double tTest(StatisticalSummary sampleStats1, |
| 318 | StatisticalSummary sampleStats2) |
| 319 | throws IllegalArgumentException, MathException { |
| 320 | return tTest.tTest(sampleStats1, sampleStats2); |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquare(double[], long[]) |
| 325 | */ |
| 326 | public static double chiSquare(double[] expected, long[] observed) |
| 327 | throws IllegalArgumentException { |
| 328 | return chiSquareTest.chiSquare(expected, observed); |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquare(long[][]) |
| 333 | */ |
| 334 | public static double chiSquare(long[][] counts) |
| 335 | throws IllegalArgumentException { |
| 336 | return chiSquareTest.chiSquare(counts); |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTest(double[], long[], double) |
| 341 | */ |
| 342 | public static boolean chiSquareTest(double[] expected, long[] observed, |
| 343 | double alpha) |
| 344 | throws IllegalArgumentException, MathException { |
| 345 | return chiSquareTest.chiSquareTest(expected, observed, alpha); |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTest(double[], long[]) |
| 350 | */ |
| 351 | public static double chiSquareTest(double[] expected, long[] observed) |
| 352 | throws IllegalArgumentException, MathException { |
| 353 | return chiSquareTest.chiSquareTest(expected, observed); |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTest(long[][], double) |
| 358 | */ |
| 359 | public static boolean chiSquareTest(long[][] counts, double alpha) |
| 360 | throws IllegalArgumentException, MathException { |
| 361 | return chiSquareTest. chiSquareTest(counts, alpha); |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * @see org.apache.commons.math.stat.inference.ChiSquareTest#chiSquareTest(long[][]) |
| 366 | */ |
| 367 | public static double chiSquareTest(long[][] counts) |
| 368 | throws IllegalArgumentException, MathException { |
| 369 | return chiSquareTest. chiSquareTest(counts); |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * @see org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareDataSetsComparison(long[], long[]) |
| 374 | * |
| 375 | * @since 1.2 |
| 376 | */ |
| 377 | public static double chiSquareDataSetsComparison(long[] observed1, long[] observed2) |
| 378 | throws IllegalArgumentException { |
| 379 | return unknownDistributionChiSquareTest.chiSquareDataSetsComparison(observed1, observed2); |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * @see org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareTestDataSetsComparison(long[], long[]) |
| 384 | * |
| 385 | * @since 1.2 |
| 386 | */ |
| 387 | public static double chiSquareTestDataSetsComparison(long[] observed1, long[] observed2) |
| 388 | throws IllegalArgumentException, MathException { |
| 389 | return unknownDistributionChiSquareTest.chiSquareTestDataSetsComparison(observed1, observed2); |
| 390 | } |
| 391 | |
| 392 | |
| 393 | /** |
| 394 | * @see org.apache.commons.math.stat.inference.UnknownDistributionChiSquareTest#chiSquareTestDataSetsComparison(long[], long[], double) |
| 395 | * |
| 396 | * @since 1.2 |
| 397 | */ |
| 398 | public static boolean chiSquareTestDataSetsComparison(long[] observed1, long[] observed2, |
| 399 | double alpha) |
| 400 | throws IllegalArgumentException, MathException { |
| 401 | return unknownDistributionChiSquareTest.chiSquareTestDataSetsComparison(observed1, observed2, alpha); |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * @see org.apache.commons.math.stat.inference.OneWayAnova#anovaFValue(Collection) |
| 406 | * |
| 407 | * @since 1.2 |
| 408 | */ |
| 409 | public static double oneWayAnovaFValue(Collection<double[]> categoryData) |
| 410 | throws IllegalArgumentException, MathException { |
| 411 | return oneWayAnova.anovaFValue(categoryData); |
| 412 | } |
| 413 | |
| 414 | /** |
| 415 | * @see org.apache.commons.math.stat.inference.OneWayAnova#anovaPValue(Collection) |
| 416 | * |
| 417 | * @since 1.2 |
| 418 | */ |
| 419 | public static double oneWayAnovaPValue(Collection<double[]> categoryData) |
| 420 | throws IllegalArgumentException, MathException { |
| 421 | return oneWayAnova.anovaPValue(categoryData); |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * @see org.apache.commons.math.stat.inference.OneWayAnova#anovaTest(Collection,double) |
| 426 | * |
| 427 | * @since 1.2 |
| 428 | */ |
| 429 | public static boolean oneWayAnovaTest(Collection<double[]> categoryData, double alpha) |
| 430 | throws IllegalArgumentException, MathException { |
| 431 | return oneWayAnova.anovaTest(categoryData, alpha); |
| 432 | } |
| 433 | |
| 434 | // CHECKSTYLE: resume JavadocMethodCheck |
| 435 | |
| 436 | } |