throttle

			throttle(callback, Event, freq = 1)
throttle(callback, Event, seconds = 1)

Throttle Event type for callback so that it is triggered either only every freq'th time or every seconds seconds.

Examples

If you want to only sporadically log metrics ( LogMetrics) or images ( LogVisualization), throttle can be used as follows.

Every 10 steps:

			
			callback = throttle(LogMetrics(TensorBoardBackend()), StepEnd, freq = 10)
learner = Learner(<args>; callbacks=[callback])

Or every 5 seconds:

			
			callback = throttle(LogMetrics(TensorBoardBackend()), StepEnd, seconds = 5)
learner = Learner(<args>; callbacks=[callback])