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annotate scripts/statistics/tests/run_test.m @ 17535:c12c688a35ed default tip lyh

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Fix warnings
author LYH <lyh.kernel@gmail.com>
date Fri, 27 Sep 2013 17:43:27 +0800
parents 1c89599167a6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
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1 ## Copyright (C) 1995-2012 Friedrich Leisch
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2 ##
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3 ## This file is part of Octave.
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4 ##
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5 ## Octave is free software; you can redistribute it and/or modify it
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6 ## under the terms of the GNU General Public License as published by
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7 ## the Free Software Foundation; either version 3 of the License, or (at
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8 ## your option) any later version.
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9 ##
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10 ## Octave is distributed in the hope that it will be useful, but
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 ## General Public License for more details.
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14 ##
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15 ## You should have received a copy of the GNU General Public License
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16 ## along with Octave; see the file COPYING. If not, see
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17 ## <http://www.gnu.org/licenses/>.
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18
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19 ## -*- texinfo -*-
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20 ## @deftypefn {Function File} {[@var{pval}, @var{chisq}] =} run_test (@var{x})
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21 ## Perform a chi-square test with 6 degrees of freedom based on the
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22 ## upward runs in the columns of @var{x}. Can be used to test whether
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23 ## @var{x} contains independent data.
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24 ##
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25 ## The p-value of the test is returned in @var{pval}.
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26 ##
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27 ## If no output argument is given, the p-value is displayed.
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28 ## @end deftypefn
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30 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
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31 ## Description: Run test for independence
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32
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33 function [pval, chisq] = run_test (x)
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35 if (nargin != 1)
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36 print_usage ();
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37 endif
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38
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39 A = [4529.4, 9044.9, 13568, 18091, 22615, 27892;
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40 9044.4, 18097, 27139, 36187, 45234, 55789;
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41 13568, 27139, 40721, 54281, 67852, 83685;
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42 18091, 36187, 54281, 72414, 90470, 111580;
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43 22615, 45234, 67852, 90470, 113262, 139476;
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44 27892, 55789, 83685, 111580, 139476, 172860];
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45
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46 b = [1/6; 5/24; 11/120; 19/720; 29/5040; 1/840];
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48 n = rows (x);
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49 r = run_count (x, 6) - n * b * ones (1, columns (x));
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51 chisq = diag (r' * A * r)' / n;
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52 pval = chi2cdf (chisq, 6);
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53
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54 if (nargout == 0)
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55 printf ("pval: %g\n", pval);
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56 endif
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57
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58 endfunction
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