back_off_constraint_by_fixed_tolerance

(function from pyomo.gdp.plugins.cuttingplane)

pyomo.gdp.plugins.cuttingplane.back_off_constraint_by_fixed_tolerance(cut, transBlock_rHull, bigm_to_hull_map, opt, stream_solver, TOL)[source]

Makes cut more conservative by absolute tolerance TOL

Parameters:

  • cut (the cut to be made more conservative, a Constraint)

  • transBlock_rHull (the relaxed hull model's transformation Block. Ignored by) – this callback

  • bigm_to_hull_map (Dictionary mapping ids of bigM variables to the) – corresponding variables on the relaxed hull instance. Ignored by this callback.

  • opt (SolverFactory object. Ignored by this callback)

  • stream_solver (Whether or not to set tee=True while solving. Ignored by) – this callback

  • TOL (An absolute tolerance to be added to make cut more conservative.)