Displaying 2 results from an estimated 2 matches for "obtatining".
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obtaining
2006 Jul 05
5
CentOS-4.3 and PHP PostgreSQL extension.
I need to enable pg support on one of my CentOS servers. I know nothing about
PHP but DRUPAL requires a DB backend and we have standardized on pg rather
than mysql. The PHP.net page devoted to the subject of pg says that to enable
pg support PHP must be built with the flag "--with-pgsql[=DIR]" and that the
required support extension must be loaded via the /etc/php.ini file with the
2004 Feb 19
1
Obtaining SE from the hessian matrix
...for NLS fit too. And, in the GSL ref. manual
example
http://www.gnu.org/software/gsl/manual/html_node/gsl-ref_36.html#SEC475
SE calculated as
#define ERR(i) sqrt(gsl_matrix_get(covar,i,i))
where covar = (J^T * J)^-1 (i.e. how in the second formulae above).
So, what is the _right_ way for obtatining SE? Why two those formulas above
differ?
Thank you!
--
WBR,
Timur.