1 ## Copyright (C) 1995-2012 Friedrich Leisch
3 ## This file is part of Octave.
5 ## Octave is free software; you can redistribute it and/or modify it
6 ## under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation; either version 3 of the License, or (at
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20 ## @deftypefn {Function File} {[@var{a}, @var{v}] =} yulewalker (@var{c})
21 ## Fit an AR (p)-model with Yule-Walker estimates given a vector @var{c}
22 ## of autocovariances @code{[gamma_0, @dots{}, gamma_p]}.
24 ## Returns the AR coefficients, @var{a}, and the variance of white
28 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
29 ## Description: Fit AR model by Yule-Walker method
31 function [a, v] = yulewalker (c)
48 CP (i, j) = c (abs (i-j) + 1);