Companion

The interior spacing of the grid the monotonicity constraints are imposed on. Coarser than the verification grid on purpose; see the class documentation.

How many powers of ten of tail refinement the constraint grid carries.

The first derivative floor tried, as a fraction of the spread of the response. Small enough not to distort a fit that was nearly valid already.

How many times the floor may be raised. Two attempts sufficed in every case tested; the remainder is margin.

The iteration cap handed to the simplex solver.

The order in which constraint refinement and floor raising are tried, as a divisor on the constraint spacing paired with a multiplier on the derivative floor.