layer_rank
Assign each member to a layer, based on domination the rank based on layers
Specification
Alias: None
Arguments: None
Description
The fitness_type: layer_rank has been specifically designed to
avoid problems with aggregating and scaling objective function values
and transforming them into a single objective.
The layer_rank fitness assessor works by assigning all
non-dominated designs a layer of 0, then from what remains, assigning
all the non-dominated a layer of 1, and so on until all designs have
been assigned a layer. The values are negated to follow the
higher-is-better fitness convention.
Use of the below_limit selector with the layer_rank fitness
assessor has the effect of keeping all those designs whose layer is
below a certain threshold again subject to the shrinkage limit.
