Version 3.0.0
Changelog:
Generalised stopping criteria (thanks @leonlan!) . Whereas previously only a maximum number of iterations was supported, you can now also use a maximum runtime.
Stopping criteria are available in alns.stop, and should be passed as the stop argument to ALNS.iterate. The stop argument replaces iterations.
Take the following example, using 10_000 iterations:
alns.iterate(..., iterations=10_000)You would now write this as
from alns.stop import MaxIterations
alns.iterate(..., stop=MaxIterations(10_000))In addition, alns.stop.MaxRuntime lets you set a maximum runtime (in seconds). You can also write your own stopping criterion, by inheriting from alns.stop.StoppingCriterion.
With the addition of stopping criteria, the old usage of the criteria module for acceptance criteria has become imprecise. This is why alns.criteria is now accessible as alns.accept. To simplify the module names further, alns.weight_schemes has been renamed to alns.weights.
ALNS now has a code style: black! The style is now consistent, and will be enforced through the CI pipeline.
Example notebooks and documentation have been updated to the new usage.
