/usr/include/trilinos/MoochoPack_CheckDecompositionFromRPy_Step.hpp is in libtrilinos-dev 10.4.0.dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | // @HEADER
// ***********************************************************************
//
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
// Copyright (2003) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// 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
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef CHECK_DECOMPOSITION_FROM_R_PY_STEP_H
#define CHECK_DECOMPOSITION_FROM_R_PY_STEP_H
#include "MoochoPack_NewDecompositionSelection_Strategy.hpp"
#include "IterationPack_AlgorithmStep.hpp"
#include "Teuchos_StandardCompositionMacros.hpp"
#include "Teuchos_StandardMemberCompositionMacros.hpp"
namespace MoochoPack {
/** \brief Check if the decomposition is going singular and if it is select a new decomposition.
*
* This steps checks if the decomposition is going singular if the computation
* for the range space step looks like it is becomming more inaccurate.
*
* In particular we want to know how cond(C) is changing. To do this we
* will monitor increases in the error in solving the equation:
\verbatim
R*py + c(equ_decomp) = 0
\endverbatim
* Therefore we will check for increases in the ratio:
\verbatim
ratio = ||R*py + c(equ_decomp)||inf / ||c(equ_decomp)||inf
\endverbatim
*
* If this ratio goes up dramatically, then this is a tail tell
* sign that <tt>R</tt> is becomming illconditioned. See the algorithm
* printout for a more detailed description what what is going on.
*/
class CheckDecompositionFromRPy_Step
: public IterationPack::AlgorithmStep // doxygen needs full name
{
public:
/// <<std comp>> members for Decomposition Select Strategy object.
STANDARD_COMPOSITION_MEMBERS( NewDecompositionSelection_Strategy, new_decomp_strategy );
/** \brief Set the maximum change in the relative error in the range space
* step before the selection of a new decomposition is triggered.
*/
STANDARD_MEMBER_COMPOSITION_MEMBERS( value_type, max_decomposition_cond_change_frac );
/** \brief . */
CheckDecompositionFromRPy_Step(
const new_decomp_strategy_ptr_t &new_decomp_strategy
,value_type max_decomposition_cond_change_frac = 1e+4
);
/// Call the reset initialization of all defaults.
void reset();
/** @name Overridden from AlgorithmStep */
//@{
/** \brief . */
bool do_step(Algorithm& algo, poss_type step_poss, IterationPack::EDoStepType type
, poss_type assoc_step_poss);
/** \brief . */
void print_step( const Algorithm& algo, poss_type step_poss, IterationPack::EDoStepType type
, poss_type assoc_step_poss, std::ostream& out, const std::string& leading_str ) const;
//@}
private:
value_type beta_min_;
// Not defined and not to be called
CheckDecompositionFromRPy_Step();
}; // end class CheckDecompositionFromRPy_Step
} // end namespace MoochoPack
#endif // CHECK_DECOMPOSITION_FROM_R_PY_STEP_H
|