tf.contrib.estimator.stop_if_lower_hook( estimator, metric_name, threshold, eval_dir=None, min_steps=0, run_every_secs=60, run_every_steps=None )
Creates hook to stop if the given metric is lower than the threshold.
estimator = ... # Hook to stop training if loss becomes lower than 100. hook = early_stopping.stop_if_lower_hook(estimator, "loss", 100) train_spec = tf.estimator.TrainSpec(..., hooks=[hook]) tf.estimator.train_and_evaluate(estimator, train_spec, ...)
Caveat: Current implementation supports early-stopping both training and
evaluation in local mode. In distributed mode, training can be stopped but
evaluation (where it's a separate job) will indefinitely wait for new model
checkpoints to evaluate, so you will need other means to detect and stop it.
Early-stopping evaluation in distributed mode requires changes in
train_and_evaluate API and will be addressed in a future revision.
str, metric to track. "loss", "accuracy", etc.
threshold: Numeric threshold for the given metric.
eval_dir: If set, directory containing summary files with eval metrics. By default,
estimator.eval_dir()will be used.
int, stop is never requested if global step is less than this value. Defaults to 0.
run_every_secs: If specified, calls
should_stop_fnat an interval of
run_every_secsseconds. Defaults to 60 seconds. Either this or
run_every_stepsmust be set.
run_every_steps: If specified, calls
run_every_stepssteps. Either this or
run_every_secsmust be set.
An early-stopping hook of type
SessionRunHook that periodically checks
if the given metric is lower than specified threshold and initiates
early stopping if true.