chainer.training.extensions.observe_value¶
- chainer.training.extensions.observe_value(observation_key, target_func)[source]¶
Returns a trainer extension to continuously record a value.
- Parameters
observation_key (str) – Key of observation to record.
target_func (function) – Function that returns the value to record. It must take one argument: :class:~chainer.training.Trainer object.
- Returns
The extension function.
This extension is triggered each epoch by default. To change this, use the
trigger
argument with theTrainer.extend()
method.