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[Help-gsl] Re: constraints over variables?

From: Rodney Sparapani
Subject: [Help-gsl] Re: constraints over variables?
Date: Fri, 18 May 2007 10:49:50 -0500
User-agent: Thunderbird (X11/20070419)

Claudio Ochoa wrote:
Hi, I am pretty new to gsl, and I am using a SV
decomposition thru gsl_linalg_SV_solve() to solve a linear
least squares problem.
Since I have some extra information about the variables, for
instance, I know that some of them are negative or positive,
I was wondering if it is possible to input this information
somehow to gsl in order to obtain more accurate results.
Otherwise, many times the results I get from the function
above assign "not allowed" values to certain variables.

Any help will be appreciated.


If a particular coefficient goes in the wrong direction,
just removing it from the model will set it to zero.  This
would be easy to automate if only one coefficient is the


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