BestValueTrigger(key, compare, trigger=(1, 'epoch'))¶
Trigger invoked when specific value becomes best.
key (str) – Key of value.
compare (callable) – Compare function which takes current best value and new value and returns whether new value is better than current best.
trigger – Trigger that decides the comparison interval between current best value and new value. This must be a tuple in the form of
<int>, 'iteration'which is passed to
Decides whether the extension should be called on this iteration.