scale_types
How to scale each nonlinear constraint
Specification
Alias: nonlinear_inequality_scale_types
Arguments: STRINGLIST
Default: no scaling
Description
Each string in scale_types
indicates the scaling type for each
nonlinear inequality (equality) constraint. They only have effect
when the associated method specifies scaling
.
The options are:
value
- characteristic value by which nonlinear constraint values will be divided. If this is chosen, thenscales
must also be specified; ‘value’ is assumed if scales are given withoutscale_types
auto
- automatic scaling based on bounds (inequalities) or targets (equalities)log
- logarithmic scaling (can be used together withscales
, which can be helpfully used to negate values prior to log transformation)
If a single string is specified it will apply to all of the nonlinear inequality (equality) constraints. Otherwise a string must be specified for each nonlinear inequality (equality) constraint.
Usage Tips:
See the scaling information under specific methods, e.g., method-*-scaling for details on how to use this keyword.