/usr/share/openturns/validation/GeneralizedNataf.txt is in openturns-validation 1.5-7build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | > restart:
> #phi:=1/(2*Pi)^(n/2)*exp(-t/2);
> #g(u^2):=subs(t=u^2,phi);
> l:=log(g(u^2));
> map(factor,collect(diff(l,u$1),u));
> map(factor,collect(diff(l,u$2),u));
2
l := ln(g(u ))
2
2 D(g)(u ) u
------------
2
g(u )
(2) 2 2 2 2 2 2
4 ((D )(g)(u ) g(u ) - D(g)(u ) ) u 2 D(g)(u )
-------------------------------------- + ----------
2 2 2
g(u ) g(u )
> subs(t=u^2,2*diff(phi,t)/phi);
-1
> diff(phi,t)/phi;
>
-1/2
>
|