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APPSPACK_Directions.hpp

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00001 // $Id: APPSPACK_Directions.hpp,v 1.11 2004/11/23 22:26:01 tgkolda Exp $ 00002 // $Source: /space/CVS-Acro/acro/packages/appspack/appspack/src/APPSPACK_Directions.hpp,v $ 00003 00004 //@HEADER 00005 // ************************************************************************ 00006 // 00007 // APPSPACK: Asynchronous Parallel Pattern Search 00008 // Copyright (2003) Sandia Corporation 00009 // 00010 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive 00011 // license for use of this work by or on behalf of the U.S. Government. 00012 // 00013 // This library is free software; you can redistribute it and/or modify 00014 // it under the terms of the GNU Lesser General Public License as 00015 // published by the Free Software Foundation; either version 2.1 of the 00016 // License, or (at your option) any later version. 00017 // 00018 // This library is distributed in the hope that it will be useful, but 00019 // WITHOUT ANY WARRANTY; without even the implied warranty of 00020 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00021 // Lesser General Public License for more details. 00022 // 00023 // You should have received a copy of the GNU Lesser General Public 00024 // License along with this library; if not, write to the Free Software 00025 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00026 // USA. . 00027 // 00028 // Questions? Contact Tammy Kolda (tgkolda@sandia.gov) 00029 // 00030 // ************************************************************************ 00031 //@HEADER 00032 00038 #ifndef APPSPACK_DIRECTIONS_HPP 00039 #define APPSPACK_DIRECTIONS_HPP 00040 00041 #include "APPSPACK_Point.hpp" 00042 #include "APPSPACK_Constraints_Interface.hpp" 00043 #include "APPSPACK_Parameter_List.hpp" 00044 00045 namespace APPSPACK 00046 { 00047 00049 00076 class Directions 00077 { 00078 00079 public: 00080 00082 00086 Directions(Parameter::List& params, const Constraints::Interface& constraints_in); 00087 00089 ~Directions(); 00090 00092 00094 00099 const vector<int>& getDirectionIndices() const; 00100 00102 const Vector& getDirection(int i) const; 00103 00105 double getStep(int i) const; 00106 00108 00112 bool isStepConverged() const; 00113 00115 00116 00118 00120 00128 void computeNewDirections(const Point& newPoint); 00129 00131 void setTrueStepAndTag(int i, double trueStep_in, int tag_in); 00132 00134 00141 void reduceStep(int i); 00142 00144 00146 00148 void print(const string label) const; 00149 00151 00152 private: 00153 00155 const Constraints::Interface& constraints; 00156 00158 const int nDimensions; 00159 00161 const Vector zero; 00162 00164 const double stepTolerance; 00165 00167 const double minStep; 00168 00170 const double theta; 00171 00173 int nDirections; 00174 00176 vector< Vector > direction; 00177 00179 Vector step; 00180 00182 00185 Vector trueStep; 00186 00188 00191 vector<int> tag; 00192 00194 Vector tmpVector; 00195 00197 mutable vector<int> idxVector; 00198 00199 }; 00200 00201 } 00202 00203 #endif

 

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