Data Fields

VOL_parms Struct Reference

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

#include <VolVolume.h>

Data Fields

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

Detailed Description

This class contains the parameters controlling the Volume Algorithm.


Field Documentation

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

Referenced by VOL_problem::solve().


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