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.
Parameters: trainer (Trainer) – Trainer object that this trigger is associated with. The
observationof this trainer is used to determine if the trigger should fire.
Trueif the corresponding extension should be invoked in this iteration.
Return type: bool