Menu.steepest: Using the steepest slope menu
Description
This help file describes usage of the steepest slope menu.Details
This help file describes usage of the steepest slope menu
for response surface models.
The menu is only available
if there is an rsm model available with at least one response.
It is necessary to select the model (as rsm models cannot be
active models in R Commander). The default degree is 2, but
1 is also possible.
The checkbox provides a switch between classical steepest ascent
in first order models (start in the middle)
or models that are almost linear with far out optima (start in a saddle point).
The latter option is reasonable for second order models,
for which the Hessian reveals that there is
still room for improvement = the stationary point is a nearby saddle point,
it is more appropriate to try increasing (decreasing) the response starting
at that saddle point and walking into both directions.