[Coin-discuss] Generating both cuts and vars

[Heesu Hwang]

I tried to change some parameters, but still doesn't work.

When I generated cuts and inserted them into the rows within
XX_lp::cuts_to_rows(),
COIN doesn't allow to insert cuts that are inefficient.

What I am trying to do is, 
1) adding cuts, and some of them may be inefficient
2) adding variables, at this point, inefficient cuts can turn into efficient
ones.

Regards,

Heesu.



Use the parameter file. Set:

BCP_IneffectiveConstraints              0

I don't know how to deal with variables.

Francois

On Fri, 30 Jun 2006, Heesu Hwang wrote:

> Hi, Laci.
>
> I am using cuts in BB example, i.e., class BB_cut : public 
> BCP_cut_algo, public OsiRowCut. When I threw cuts into the rows vector 
> within XX_lp::cuts_to_rows(), COIN seems to delete some ineffective 
> cuts. I tried *->make_non_removable, but it doesn't work.
> Also it doesn't work for vars either.
> Can I keep all the cuts and vars that I've generated, even they are not
> ineffective?
>
> Thanks,
>
> Heesu Hwang.
>
>
>
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