convar.h File Reference

constraints and variables. More...

#include "abacus/abacusroot.h"
#include <iostream>

Go to the source code of this file.

Classes
class	ABA_CONVAR
	ABA_CONVAR is the common base class for constraints and variables, which are implemented in the derived classes ABA_CONSTRAINT and ABA_VARIABLE, respectively. More...

---

Detailed Description

constraints and variables.

Author:

Matthias Elf

ABA_CONVAR is the common base class for constraints and variables, which are implemented in the derived classes ABA_CONSTRAINT and ABA_VARIABLE, respectively. It might seem a bit strange to implement a common base class for these two objects. Besides several technical reasons, there is linear programming duality which motivates this point of view. E.g., the separation problem for the primal problem is equivalent to the pricing problem for the dual problem.

ABA_CONVAR is { not} the base class for constraints and variables as they are used in the interface to the linear programming solver. There are the classes ABA_ROW and ABA_COLUMN for this purpose. ABA_CONVAR is the father of a class hierarchy for abstract constraints and variables which are used in the \ algorithm.

License:

This file is part of ABACUS - A Branch And CUt System Copyright (C) 1995 - 2003 University of Cologne, Germany

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

See also:

http://www.gnu.org/copyleft/gpl.html

Definition in file convar.h.

---