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VOL_parms Struct Reference

This class contains the parameters controlling the Volume Algorithm. More...

#include <OsiTestSolver.hpp>

Public Attributes

double lambdainit
 initial value of lambda More...
 
double alphainit
 initial value of alpha More...
 
double alphamin
 minimum value for alpha More...
 
double alphafactor
 when little progress is being done, we multiply alpha by alphafactor More...
 
double ubinit
 initial upper bound of the value of an integer solution More...
 
double primal_abs_precision
 accept if max abs viol is less than this More...
 
double gap_abs_precision
 accept if abs gap is less than this More...
 
double gap_rel_precision
 accept if rel gap is less than this More...
 
double granularity
 terminate if best_ub - lcost < granularity More...
 
double minimum_rel_ascent
 terminate if the relative increase in lcost through ascent_check_invl steps is less than this More...
 
int ascent_first_check
 when to check for sufficient relative ascent the first time More...
 
int ascent_check_invl
 through how many iterations does the relative ascent have to reach a minimum More...
 
int maxsgriters
 maximum number of iterations More...
 
int printflag
 controls the level of printing. More...
 
int printinvl
 controls how often do we print More...
 
int heurinvl
 controls how often we run the primal heuristic More...
 
int greentestinvl
 how many consecutive green iterations are allowed before changing lambda More...
 
int yellowtestinvl
 how many consecutive yellow iterations are allowed before changing lambda More...
 
int redtestinvl
 how many consecutive red iterations are allowed before changing lambda More...
 
int alphaint
 number of iterations before we check if alpha should be decreased More...
 
char * temp_dualfile
 name of file for saving dual solution More...
 

Detailed Description

This class contains the parameters controlling the Volume Algorithm.

Definition at line 73 of file OsiTestSolver.hpp.

Member Data Documentation

double VOL_parms::lambdainit

initial value of lambda

Definition at line 75 of file OsiTestSolver.hpp.

double VOL_parms::alphainit

initial value of alpha

Definition at line 77 of file OsiTestSolver.hpp.

double VOL_parms::alphamin

minimum value for alpha

Definition at line 79 of file OsiTestSolver.hpp.

double VOL_parms::alphafactor

when little progress is being done, we multiply alpha by alphafactor

Definition at line 81 of file OsiTestSolver.hpp.

double VOL_parms::ubinit

initial upper bound of the value of an integer solution

Definition at line 84 of file OsiTestSolver.hpp.

double VOL_parms::primal_abs_precision

accept if max abs viol is less than this

Definition at line 87 of file OsiTestSolver.hpp.

double VOL_parms::gap_abs_precision

accept if abs gap is less than this

Definition at line 89 of file OsiTestSolver.hpp.

double VOL_parms::gap_rel_precision

accept if rel gap is less than this

Definition at line 91 of file OsiTestSolver.hpp.

double VOL_parms::granularity

terminate if best_ub - lcost < granularity

Definition at line 93 of file OsiTestSolver.hpp.

double VOL_parms::minimum_rel_ascent

terminate if the relative increase in lcost through ascent_check_invl steps is less than this

Definition at line 97 of file OsiTestSolver.hpp.

int VOL_parms::ascent_first_check

when to check for sufficient relative ascent the first time

Definition at line 99 of file OsiTestSolver.hpp.

int VOL_parms::ascent_check_invl

through how many iterations does the relative ascent have to reach a minimum

Definition at line 102 of file OsiTestSolver.hpp.

int VOL_parms::maxsgriters

maximum number of iterations

Definition at line 105 of file OsiTestSolver.hpp.

int VOL_parms::printflag

controls the level of printing.

The flag should the the 'OR'-d value of the following options:

  • 0 - print nothing
  • 1 - print iteration information
  • 2 - add lambda information
  • 4 - add number of Red, Yellow, Green iterations

Default: 3

Definition at line 117 of file OsiTestSolver.hpp.

int VOL_parms::printinvl

controls how often do we print

Definition at line 119 of file OsiTestSolver.hpp.

int VOL_parms::heurinvl

controls how often we run the primal heuristic

Definition at line 121 of file OsiTestSolver.hpp.

int VOL_parms::greentestinvl

how many consecutive green iterations are allowed before changing lambda

Definition at line 125 of file OsiTestSolver.hpp.

int VOL_parms::yellowtestinvl

how many consecutive yellow iterations are allowed before changing lambda

Definition at line 128 of file OsiTestSolver.hpp.

int VOL_parms::redtestinvl

how many consecutive red iterations are allowed before changing lambda

Definition at line 131 of file OsiTestSolver.hpp.

int VOL_parms::alphaint

number of iterations before we check if alpha should be decreased

Definition at line 134 of file OsiTestSolver.hpp.

char* VOL_parms::temp_dualfile

name of file for saving dual solution

Definition at line 137 of file OsiTestSolver.hpp.


The documentation for this struct was generated from the following file: