Result assigner that intentionally does nothing.
This is useful for search runs where no single "best" point exists, e.g.
active learning tasks with codomain targets tagged "learn". In these cases,
calling archive$best() is undefined and will error, so using the default
result assigner from mlr3mbo is not appropriate.
Creates a new ResultAssignerNull.
Assigns the result to the instance.
This implementation does nothing (leaves instance$result untouched).
Arguments
- instance
(bbotk::OptimInstance)
The instance the result would be assigned to.
Fields
packages(
character())
Required packages (none).