A sigmoidal selectivity function with 50% selectivity at
weight sigmoidal_weight and width sigmoidal_sigma.
Arguments
- w
The size of the individual.
- sigmoidal_weight
The weight at which the knife-edge operates.
- sigmoidal_sigma
The width of the selection function
- ...
Unused
See also
Other selectivity functions:
double_sigmoid_length(),
knife_edge(),
sigmoid_length()