SaveBestTrialCallback#

class mergernet.model.callbacks.SaveBestTrialCallback[source]#

Bases: Callback

_implements_predict_batch_hooks()#

Determines if this Callback should be called for each predict batch.

_implements_test_batch_hooks()#

Determines if this Callback should be called for each test batch.

_implements_train_batch_hooks()#

Determines if this Callback should be called for each train batch.

on_batch_begin(batch, logs=None)#

A backwards compatibility alias for on_train_batch_begin.

on_batch_end(batch, logs=None)#

A backwards compatibility alias for on_train_batch_end.

on_epoch_begin(epoch, logs=None)#

Called at the start of an epoch.

Subclasses should override for any actions to run. This function should only be called during TRAIN mode.

Parameters:

  • 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.

on_epoch_end(epoch, logs=None)#

Called at the end of an epoch.

Subclasses should override for any actions to run. This function should only be called during TRAIN mode.

Parameters:

  • 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_. For training epoch, the values of the Model’s metrics are returned. Example: {‘loss’: 0.2, ‘accuracy’: 0.7}.

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

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

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

  • logs – Dict. Aggregated metric results up until this batch.

on_predict_begin(logs=None)#

Called at the beginning of prediction.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently no data is passed to this argument for this method but that may change in the future.

on_predict_end(logs=None)#

Called at the end of prediction.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently no data is passed to this argument for this method but that may change in the future.

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

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

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

  • logs – Dict. Aggregated metric results up until this batch.

on_test_begin(logs=None)#

Called at the beginning of evaluation or validation.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently no data is passed to this argument for this method but that may change in the future.

on_test_end(logs=None)#

Called at the end of evaluation or validation.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently the output of the last call to on_test_batch_end() is passed to this argument for this method but that may change in the future.

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

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

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.

Note that if the steps_per_execution argument to compile in tf.keras.Model is set to N, this method will only be called every N batches.

Parameters:

  • batch – Integer, index of batch within the current epoch.

  • logs – Dict. Aggregated metric results up until this batch.

on_train_begin(logs=None)#

Called at the beginning of training.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently no data is passed to this argument for this method but that may change in the future.

on_train_end(logs: Dict[str, Any])[source]#

Called at the end of training.

Subclasses should override for any actions to run.

Parameters:

logs – Dict. Currently the output of the last call to on_epoch_end() is passed to this argument for this method but that may change in the future.

set_model(model)#
set_params(params)#
_keras_api_names = ('keras.callbacks.Callback',)#
_keras_api_names_v1 = ('keras.callbacks.Callback',)#