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tf.keras.callbacks.ProgbarLogger

Class ProgbarLogger

Inherits From: Callback

Defined in tensorflow/python/keras/callbacks.py.

Callback that prints metrics to stdout.

Arguments:

  • count_mode: One of "steps" or "samples". Whether the progress bar should count samples seen or steps (batches) seen.
  • stateful_metrics: Iterable of string names of metrics that should not be averaged over an epoch. Metrics in this list will be logged as-is. All others will be averaged over time (e.g. loss, etc).

Raises:

  • ValueError: In case of invalid count_mode.

__init__

__init__(
    count_mode='samples',
    stateful_metrics=None
)

Initialize self. See help(type(self)) for accurate signature.

Methods

on_batch_begin

on_batch_begin(
    batch,
    logs=None
)

A backwards compatibility alias for on_train_batch_begin.

on_batch_end

on_batch_end(
    batch,
    logs=None
)

A backwards compatibility alias for on_train_batch_end.

on_epoch_begin

on_epoch_begin(
    epoch,
    logs=None
)

Called at the start of an epoch.

Subclasses should override for any actions to run.

Arguments:

  • epoch: integer, index of epoch.
  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.
  • mode: One of 'train'/'test'/'predict'

on_epoch_end

on_epoch_end(
    epoch,
    logs=None
)

Called at the end of an epoch.

Subclasses should override for any actions to run.

Arguments:

  • epoch: integer, index of epoch.
  • logs: dict, metric results for this training epoch, and for the validation epoch if validation is performed. Validation result keys are prefixed with val_.
  • mode: One of 'train'/'test'/'predict'

on_predict_batch_begin

on_predict_batch_begin(
    batch,
    logs=None
)

Called at the beginning of a batch in predict methods.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Has keys batch and size representing the current batch number and the size of the batch.

on_predict_batch_end

on_predict_batch_end(
    batch,
    logs=None
)

Called at the end of a batch in predict methods.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Metric results for this batch.

on_predict_begin

on_predict_begin(logs=None)

Called at the beginning of prediction.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

on_predict_end

on_predict_end(logs=None)

Called at the end of prediction.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

on_test_batch_begin

on_test_batch_begin(
    batch,
    logs=None
)

Called at the beginning of a batch in evaluate methods.

Also called at the beginning of a validation batch in the fit methods, if validation data is provided.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Has keys batch and size representing the current batch number and the size of the batch.

on_test_batch_end

on_test_batch_end(
    batch,
    logs=None
)

Called at the end of a batch in evaluate methods.

Also called at the end of a validation batch in the fit methods, if validation data is provided.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Metric results for this batch.

on_test_begin

on_test_begin(logs=None)

Called at the beginning of evaluation or validation.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

on_test_end

on_test_end(logs=None)

Called at the end of evaluation or validation.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

on_train_batch_begin

on_train_batch_begin(
    batch,
    logs=None
)

Called at the beginning of a training batch in fit methods.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Has keys batch and size representing the current batch number and the size of the batch.

on_train_batch_end

on_train_batch_end(
    batch,
    logs=None
)

Called at the end of a training batch in fit methods.

Subclasses should override for any actions to run.

Arguments:

  • batch: integer, index of batch within the current epoch.
  • logs: dict. Metric results for this batch.

on_train_begin

on_train_begin(logs=None)

Called at the beginning of training.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

on_train_end

on_train_end(logs=None)

Called at the end of training.

Subclasses should override for any actions to run.

Arguments:

  • logs: dict. Currently no data is passed to this argument for this method but that may change in the future.

set_model

set_model(model)

set_params

set_params(params)