
ColgenInstance:set(+What,++Value)

   Set parameters for column generation instance.

Arguments
   What                Parameter name
   Value               Parameter value

Type
   library(colgen)

Description
    
    Set parameters for the give column generation instance:
    

disallow (off|lp|clp)
    policy for active preventions of duplicate columns.
int_tolerance (1e-5|float)
    tolerance for optimality.
basis_perturbation (off|on)
    should we try and perturb the external solver basis when we appear
    to be at optimal and external solver returns same basis after adding
    columns  ('off' - no, 'on' - temporarily set the external solver
    to always perturb)
info_messages (off|on)
    print messages while solving.
on_degeneracy (stop|continue)
    should we halt when we find degeneracy (default 'stop'), or
    continue and let the subproblem solver deal with it ('continue').
stabilisation (off|on()|stab_pred())
    the policy to perform basis stabilisation:
    
    off
	no stabilisation is performed.
    on(BoundIter, BoundUpdate, CoeffIter, CoeffUpdate)
	then the default policy is used with var bounds/coefficients
	updated by BoundUpdate/CoeffUpdate after BoundIter/CoeffIter
	iterations respectively.
    stab_pred(UpdatePred, StoppingPred)
	a user defined policy is employed and UpdatePred/ StoppingPred
	should be predicates that perform the updates and test for
	stopping conditions.
    
stab_coeff/bound_minus/plus(Ident)
    parameters for stabilisation, per constraint.

 

See Also
   get / 2, solver_setup / 3
