Location: LEMON/LEMON-official/lemon/lp_base.cc - annotation
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kpeter (Peter Kovacs)
Implement the scaling Price Refinement heuristic in CostScaling (#417)
instead of Early Termination.
These two heuristics are similar, but the newer one is faster
and not only makes it possible to skip some epsilon phases, but
it can improve the performance of the other phases, as well.
r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r964:141f9c0db4a3 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r481:7afc121e0689 r557:bc0a130bbb46 r557:bc0a130bbb46 r557:bc0a130bbb46 r557:bc0a130bbb46 r481:7afc121e0689 r481:7afc121e0689 | /* -*- mode: C++; indent-tabs-mode: nil; -*-
*
* This file is a part of LEMON, a generic C++ optimization library.
*
* Copyright (C) 2003-2010
* Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
* (Egervary Research Group on Combinatorial Optimization, EGRES).
*
* Permission to use, modify and distribute this software is granted
* provided that this copyright notice appears in all copies. For
* precise terms see the accompanying LICENSE file.
*
* This software is provided "AS IS" with no warranty of any kind,
* express or implied, and with no claim as to its suitability for any
* purpose.
*
*/
///\file
///\brief The implementation of the LP solver interface.
#include <lemon/lp_base.h>
namespace lemon {
const LpBase::Value LpBase::INF =
std::numeric_limits<LpBase::Value>::infinity();
const LpBase::Value LpBase::NaN =
std::numeric_limits<LpBase::Value>::quiet_NaN();
} //namespace lemon
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