[Os-project-managers] Consent agenda item: Basis status
Jun Ma
majxuh at hotmail.com
Tue Oct 19 00:48:27 EDT 2010
I agree.
--------------------------------------------------
From: "Horand Gassmann" <Horand.Gassmann at dal.ca>
Sent: Thursday, October 07, 2010 10:31 AM
To: <os-project-managers at list.coin-or.org>
Subject: [Os-project-managers] Consent agenda item: Basis status
> Hi guys,
>
> I think we agreed that the basis status should be stored through an
> array of index vectors, one for each basis status, and that the
> different status values should be
>
> basic
> atLower
> atUpper
> isFree
> superbasic
> unknown
>
> I would like to propose that the index vector be stored as an
> IntVector and not a NonNegativeIntVector as in the present draft. The
> reason is the handling of objective rows. They can have a basis
> status, but their index values are negative. It seems too cumbersome
> to have to create both a BasisStatus and an ObjectiveBasisStatus type
> just for this distinction. I propose that we verify the sign
> restriction on the indices in code and document in the schema via
> annotation.
>
> Agree/Disagree?
>
> Thanks
>
> gus
>
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