[Coin-discuss] update the true lower bound question

Matthew Galati magh at lehigh.edu
Thu Jan 22 09:59:25 EST 2004


Yes, given the current implementation in BCP, you will typically want to 
generate your vars in compute_lower_bound - then, perhaps, pass it to 
generate_vars_in_lp. There is some discussion on this topic here:

http://www-124.ibm.com/pipermail/coin-discuss/2003-November/000705.html

Matt



> 	Dear Coin Team/Users,
> 
> 	I am trying to implement a branch-and-price algorithm in a serial environment.
> 	I suppose I should generate my variables in the "generate_vars_in_lp" method. However, before doing that, the method "compute_lower_bound" is called. My question is: should I generate my variables in "compute_lower_bound" to know if I can update the true lower bound,  or I lost some detail?
>   
> 	Thanks again for the help I am receiving from you,
> 	Eduardo.
> 
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