| # 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. |
| # |
| #------------------------------------------------------------------------------ |
| # R source file to validate ChiSquare distribution tests in |
| # org.apache.commons.math.distribution.ChiSquareDistributionTest |
| # |
| # To run the test, install R, put this file and testFunctions |
| # into the same directory, launch R from this directory and then enter |
| # source("<name-of-this-file>") |
| # |
| #----------------------------------------------------------------------------- |
| tol <- 1E-9 |
| |
| # Function definitions |
| source("testFunctions") # utility test functions |
| |
| # function to verify distribution computations |
| verifyDistribution <- function(points, expected, df, tol) { |
| rDistValues <- rep(0, length(points)) |
| i <- 0 |
| for (point in points) { |
| i <- i + 1 |
| rDistValues[i] <- pchisq(point, df, log = FALSE) |
| } |
| output <- c("Distribution test df = ", df) |
| if (assertEquals(expected, rDistValues, tol, "Distribution Values")) { |
| displayPadded(output, SUCCEEDED, WIDTH) |
| } else { |
| displayPadded(output, FAILED, WIDTH) |
| } |
| } |
| |
| # function to verify density computations |
| verifyDensity <- function(points, expected, df, tol) { |
| rDensityValues <- rep(0, length(points)) |
| i <- 0 |
| for (point in points) { |
| i <- i + 1 |
| rDensityValues[i] <- dchisq(point, df, log = FALSE) |
| } |
| output <- c("Density test df = ", df) |
| if (assertEquals(expected, rDensityValues, tol, "Density Values")) { |
| displayPadded(output, SUCCEEDED, WIDTH) |
| } else { |
| displayPadded(output, FAILED, WIDTH) |
| } |
| } |
| |
| # function to verify quantiles |
| verifyQuantiles <- function(points, expected, df, tol) { |
| rQuantileValues <- rep(0, length(points)) |
| i <- 0 |
| for (point in points) { |
| i <- i + 1 |
| rQuantileValues[i] <- qchisq(point, df, log = FALSE) |
| } |
| output <- c("Quantile test df = ", df) |
| if (assertEquals(expected, rQuantileValues, tol, "Quantile Values")) { |
| displayPadded(output, SUCCEEDED, WIDTH) |
| } else { |
| displayPadded(output, FAILED, WIDTH) |
| } |
| } |
| |
| #-------------------------------------------------------------------------- |
| cat("ChiSquare Distribution test cases\n") |
| |
| df <- 5 |
| distributionValues <- c(0.001, 0.01, 0.025, 0.05, 0.1, 0.999, 0.990, 0.975, 0.950, 0.900) |
| densityValues <- c(0.0115379817652, 0.0415948507811, 0.0665060119842, 0.0919455953114, 0.121472591024, |
| 0.000433630076361, 0.00412780610309, 0.00999340341045, 0.0193246438937, 0.0368460089216) |
| distributionPoints <- c(0.210212602629, 0.554298076728, 0.831211613487, 1.14547622606, 1.61030798696, |
| 20.5150056524, 15.0862724694, 12.8325019940, 11.0704976935, 9.23635689978) |
| verifyQuantiles(distributionValues, distributionPoints, df, tol) |
| verifyDistribution(distributionPoints, distributionValues, df, tol) |
| verifyDensity(distributionPoints, densityValues, df, tol) |
| |
| df <- .1 |
| distributionPoints <- c(1.16892641146e-60, 1.16892641146e-40, 1.06313237798e-32, 1.11477509638e-26, 1.16892641146e-20, |
| 5.47291719746, 2.17525480018, 1.13434752351, 0.531864604852, 0.152634227818) |
| verifyQuantiles(distributionValues, distributionPoints, df, tol) |
| verifyDistribution(distributionPoints, distributionValues, df, tol) |
| |
| displayDashes(WIDTH) |