Package org.apache.commons.math.stat

Examples of org.apache.commons.math.stat.Frequency$NaturalComparator

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            long x = randomData.nextSecureLong(4,3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            ;
        }
        Frequency freq = new Frequency();
        long value = 0;
        for (int i=0;i<smallSampleSize;i++) {
            value = randomData.nextSecureLong(0,3);
            assertTrue("nextInt range",(value >= 0) && (value <= 3));
            freq.addValue(value); 
        }
        long[] observed = new long[4];
        for (int i=0; i<4; i++) {
            observed[i] = freq.getCount(i);
        }
       
        /* Use ChiSquare dist with df = 4-1 = 3, alpha = .001
         * Change to 11.34 for alpha = .01
         */
 
View Full Code Here
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            long x = randomData.nextSecureInt(4,3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            ;
        }
        Frequency freq = new Frequency();
        int value = 0;
        for (int i=0;i<smallSampleSize;i++) {
            value = randomData.nextSecureInt(0,3);
            assertTrue("nextInt range",(value >= 0) && (value <= 3));
            freq.addValue(value); 
        }
        long[] observed = new long[4];
        for (int i=0; i<4; i++) {
            observed[i] = freq.getCount(i);
        }
       
        /* Use ChiSquare dist with df = 4-1 = 3, alpha = .001
         * Change to 11.34 for alpha = .01
         */
 
View Full Code Here
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            long x = randomData.nextPoisson(0);
            fail("zero mean -- expecting IllegalArgumentException");
        } catch (IllegalArgumentException ex) {
            ;
        }
        Frequency f = new Frequency();
        long v = 0;
        for (int i = 0; i<largeSampleSize; i++) {
            try {
                f.addValue(randomData.nextPoisson(4.0d));
            } catch (Exception ex) {
                fail(ex.getMessage());
            }
        }
        long cumFreq = f.getCount(0) + f.getCount(1) + f.getCount(2) +
                        f.getCount(3) + f.getCount(4) + f.getCount(5);
        long sumFreq = f.getSumFreq();
        double cumPct =
            new Double(cumFreq).doubleValue()/new Double(sumFreq).doubleValue();
        assertEquals("cum Poisson(4)",cumPct,0.7851,0.2);
        try {
            long x = randomData.nextPoisson(-1);
View Full Code Here
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            testGenerator.nextInt(-1);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            // ignored
        }
        Frequency freq = new Frequency();
        int value = 0;
        for (int i=0; i<smallSampleSize; i++) {
            value = testGenerator.nextInt(4);
            assertTrue("nextInt range",(value >= 0) && (value <= 3));
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i=0; i<4; i++) {
            observed[i] = freq.getCount(i);
        }

        /* Use ChiSquare dist with df = 4-1 = 3, alpha = .001
         * Change to 11.34 for alpha = .01
         */
 
View Full Code Here
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    public void testNextLong() {
        long q1 = Long.MAX_VALUE/4;
        long q2 = 2 *  q1;
        long q3 = 3 * q1;

        Frequency freq = new Frequency();
        long val = 0;
        int value = 0;
        for (int i=0; i<smallSampleSize; i++) {
            val = testGenerator.nextLong();
            if (val < q1) {
                value = 0;
            } else if (val < q2) {
                value = 1;
            } else if (val < q3) {
                value = 2;
            } else {
                value = 3;
            }
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i=0; i<4; i++) {
            observed[i] = freq.getCount(i);
        }

        /* Use ChiSquare dist with df = 4-1 = 3, alpha = .001
         * Change to 11.34 for alpha = .01
         */
 
View Full Code Here
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        assertTrue("chi-square test -- will fail about 1 in 1000 times",
                testStatistic.chiSquare(expected,observed) < 10.828);
    }

    public void testNextFloat() {
        Frequency freq = new Frequency();
        float val = 0;
        int value = 0;
        for (int i=0; i<smallSampleSize; i++) {
            val = testGenerator.nextFloat();
            if (val < 0.25) {
                value = 0;
            } else if (val < 0.5) {
                value = 1;
            } else if (val < 0.75) {
                value = 2;
            } else {
                value = 3;
            }
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i=0; i<4; i++) {
            observed[i] = freq.getCount(i);
        }

        /* Use ChiSquare dist with df = 4-1 = 3, alpha = .001
         * Change to 11.34 for alpha = .01
         */
 
View Full Code Here
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            randomData.nextInt(4, 3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            // ignored
        }
        Frequency freq = new Frequency();
        int value = 0;
        for (int i = 0; i < smallSampleSize; i++) {
            value = randomData.nextInt(0, 3);
            assertTrue("nextInt range", (value >= 0) && (value <= 3));
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i = 0; i < 4; i++) {
            observed[i] = freq.getCount(i);
        }

        /*
         * Use ChiSquare dist with df = 4-1 = 3, alpha = .001 Change to 11.34
         * for alpha = .01
View Full Code Here
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            randomData.nextLong(4, 3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            // ignored
        }
        Frequency freq = new Frequency();
        long value = 0;
        for (int i = 0; i < smallSampleSize; i++) {
            value = randomData.nextLong(0, 3);
            assertTrue("nextInt range", (value >= 0) && (value <= 3));
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i = 0; i < 4; i++) {
            observed[i] = freq.getCount(i);
        }

        /*
         * Use ChiSquare dist with df = 4-1 = 3, alpha = .001 Change to 11.34
         * for alpha = .01
View Full Code Here
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            randomData.nextSecureLong(4, 3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            // ignored
        }
        Frequency freq = new Frequency();
        long value = 0;
        for (int i = 0; i < smallSampleSize; i++) {
            value = randomData.nextSecureLong(0, 3);
            assertTrue("nextInt range", (value >= 0) && (value <= 3));
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i = 0; i < 4; i++) {
            observed[i] = freq.getCount(i);
        }

        /*
         * Use ChiSquare dist with df = 4-1 = 3, alpha = .001 Change to 11.34
         * for alpha = .01
View Full Code Here
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            randomData.nextSecureInt(4, 3);
            fail("IllegalArgumentException expected");
        } catch (IllegalArgumentException ex) {
            // ignored
        }
        Frequency freq = new Frequency();
        int value = 0;
        for (int i = 0; i < smallSampleSize; i++) {
            value = randomData.nextSecureInt(0, 3);
            assertTrue("nextInt range", (value >= 0) && (value <= 3));
            freq.addValue(value);
        }
        long[] observed = new long[4];
        for (int i = 0; i < 4; i++) {
            observed[i] = freq.getCount(i);
        }

        /*
         * Use ChiSquare dist with df = 4-1 = 3, alpha = .001 Change to 11.34
         * for alpha = .01
View Full Code Here
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