def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
stackoverflow_train, stackoverflow_validation, stackoverflow_test = stackoverflow_lr_dataset.get_stackoverflow_datasets(
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size,
client_batch_size=FLAGS.client_batch_size,
client_epochs_per_round=FLAGS.client_epochs_per_round,
max_training_elements_per_user=FLAGS.max_elements_per_user,
num_validation_examples=FLAGS.num_validation_examples)
input_spec = stackoverflow_train.create_tf_dataset_for_client(
stackoverflow_train.client_ids[0]).element_spec
model_builder = functools.partial(
stackoverflow_lr_models.create_logistic_model,
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size)
loss_builder = functools.partial(tf.keras.losses.BinaryCrossentropy,
from_logits=False,
reduction=tf.keras.losses.Reduction.SUM)
training_process = iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=stackoverflow_train,
train_clients_per_round=FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = fed_avg_schedule.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=stackoverflow_validation,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=stackoverflow_validation.concatenate(stackoverflow_test),
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(training_process,
client_datasets_fn,
evaluate_fn,
test_fn=test_fn)
def test_raises_no_model_attribute_in_state(self):
class BadIterativeProcess(adapters.IterativeProcessPythonAdapter):
"""Converts iterative process results from anonymous tuples."""
def __init__(self):
pass
def initialize(self):
return {}
def next(self, state, data):
return {}
iterative_process = BadIterativeProcess()
federated_data = [[_batch_fn()]]
def client_datasets_fn(round_num):
del round_num
return federated_data
def eval_fn(model):
del model
return {}
with self.assertRaisesRegex(
TypeError, 'The server state must have a model attribute'):
training_loop.run(iterative_process, client_datasets_fn, eval_fn)
def test_fn_writes_metrics(self):
FLAGS.total_rounds = 1
FLAGS.rounds_per_eval = 10
FLAGS.experiment_name = 'test_metrics'
iterative_process = _build_federated_averaging_process()
batch = _batch_fn()
federated_data = [[batch]]
def client_datasets_fn(round_num):
del round_num
return federated_data
def evaluate(model):
keras_model = tff.simulation.models.mnist.create_keras_model(
compile_model=True)
model.assign_weights_to(keras_model)
return {'loss': keras_model.evaluate(batch.x, batch.y)}
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
training_loop.run(iterative_process,
client_datasets_fn,
evaluate,
test_fn=evaluate)
results_dir = os.path.join(FLAGS.root_output_dir, 'results',
FLAGS.experiment_name)
scalar_manager = metrics_manager.ScalarMetricsManager(results_dir)
metrics = scalar_manager.get_metrics()
self.assertEqual(2, len(metrics.index))
self.assertIn('eval/loss', metrics.columns)
self.assertIn('test/loss', metrics.columns)
self.assertNotIn('train_eval/loss', metrics.columns)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
tf.compat.v1.enable_v2_behavior()
stackoverflow_train, stackoverflow_validation, stackoverflow_test = dataset.get_stackoverflow_datasets(
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size,
client_batch_size=FLAGS.client_batch_size,
client_epochs_per_round=FLAGS.client_epochs_per_round,
max_training_elements_per_user=FLAGS.max_elements_per_user,
num_validation_examples=FLAGS.num_validation_examples)
sample_client_dataset = stackoverflow_train.create_tf_dataset_for_client(
stackoverflow_train.client_ids[0])
# TODO(b/144382142): Sample batches cannot be eager tensors, since they are
# passed (implicitly) to tff.learning.build_federated_averaging_process.
sample_batch = tf.nest.map_structure(lambda x: x.numpy(),
next(iter(sample_client_dataset)))
model_builder = functools.partial(
models.create_logistic_model,
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size)
loss_builder = functools.partial(tf.keras.losses.BinaryCrossentropy,
from_logits=False,
reduction=tf.keras.losses.Reduction.SUM)
training_process = iterative_process_builder.from_flags(
dummy_batch=sample_batch,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
stackoverflow_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=stackoverflow_validation,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=stackoverflow_validation.concatenate(stackoverflow_test),
loss_builder=loss_builder,
metrics_builder=metrics_builder)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(training_process,
client_datasets_fn,
evaluate_fn,
test_fn=test_fn)
def run_experiment():
"""Data preprocessing and experiment execution."""
emnist_train, emnist_test = dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=FLAGS.only_digits)
example_dataset = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0])
sample_batch = tf.nest.map_structure(lambda x: x.numpy(),
next(iter(example_dataset)))
client_datasets_fn = training_utils.build_client_datasets_fn(
emnist_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_optimizer_fn = functools.partial(
utils_impl.create_optimizer_from_flags, 'client')
server_optimizer_fn = functools.partial(
utils_impl.create_optimizer_from_flags, 'server')
def tff_model_fn():
keras_model = model_builder()
return tff.learning.from_keras_model(keras_model,
dummy_batch=sample_batch,
loss=loss_builder(),
metrics=metrics_builder())
if FLAGS.use_compression:
# We create a `StatefulBroadcastFn` and `StatefulAggregateFn` by providing
# the `_broadcast_encoder_fn` and `_mean_encoder_fn` to corresponding
# utilities. The fns are called once for each of the model weights created
# by tff_model_fn, and return instances of appropriate encoders.
encoded_broadcast_fn = (
tff.learning.framework.build_encoded_broadcast_from_model(
tff_model_fn, _broadcast_encoder_fn))
encoded_mean_fn = tff.learning.framework.build_encoded_mean_from_model(
tff_model_fn, _mean_encoder_fn)
else:
encoded_broadcast_fn = None
encoded_mean_fn = None
iterative_process = tff.learning.build_federated_averaging_process(
model_fn=tff_model_fn,
client_optimizer_fn=client_optimizer_fn,
server_optimizer_fn=server_optimizer_fn,
stateful_delta_aggregate_fn=encoded_mean_fn,
stateful_model_broadcast_fn=encoded_broadcast_fn)
iterative_process = compression_process_adapter.CompressionProcessAdapter(
iterative_process)
training_loop.run(iterative_process=iterative_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn)
def run_experiment():
"""Data preprocessing and experiment execution."""
emnist_train, emnist_test = emnist_dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=FLAGS.only_digits)
example_dataset = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0])
input_spec = example_dataset.element_spec
client_datasets_fn = training_utils.build_client_datasets_fn(
emnist_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
client_optimizer_fn = functools.partial(
utils_impl.create_optimizer_from_flags, 'client')
server_optimizer_fn = functools.partial(
utils_impl.create_optimizer_from_flags, 'server')
def tff_model_fn():
keras_model = model_builder()
return tff.learning.from_keras_model(keras_model,
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
if FLAGS.use_compression:
# We create a `MeasuredProcess` for broadcast process and a
# `MeasuredProcess` for aggregate process by providing the
# `_broadcast_encoder_fn` and `_mean_encoder_fn` to corresponding utilities.
# The fns are called once for each of the model weights created by
# tff_model_fn, and return instances of appropriate encoders.
encoded_broadcast_process = (
tff.learning.framework.build_encoded_broadcast_process_from_model(
tff_model_fn, _broadcast_encoder_fn))
encoded_mean_process = (
tff.learning.framework.build_encoded_mean_process_from_model(
tff_model_fn, _mean_encoder_fn))
else:
encoded_broadcast_process = None
encoded_mean_process = None
iterative_process = tff.learning.build_federated_averaging_process(
model_fn=tff_model_fn,
client_optimizer_fn=client_optimizer_fn,
server_optimizer_fn=server_optimizer_fn,
aggregation_process=encoded_mean_process,
broadcast_process=encoded_broadcast_process)
training_loop.run(iterative_process=iterative_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
tf.compat.v1.enable_v2_behavior()
# TODO(b/139129100): Remove this once the local executor is the default.
tff.framework.set_default_executor(
tff.framework.local_executor_factory(max_fanout=25))
emnist_train, emnist_test = dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=False)
sample_client_dataset = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0])
# TODO(b/144382142): Sample batches cannot be eager tensors, since they are
# passed (implicitly) to tff.learning.build_federated_averaging_process.
sample_batch = tf.nest.map_structure(lambda x: x.numpy(),
next(iter(sample_client_dataset)))
if FLAGS.model == 'cnn':
model_builder = functools.partial(models.create_conv_dropout_model,
only_digits=False)
elif FLAGS.model == '2nn':
model_builder = functools.partial(models.create_two_hidden_layer_model,
only_digits=False)
else:
raise ValueError('Cannot handle model flag [{!s}].'.format(
FLAGS.model))
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
training_process = iterative_process_builder.from_flags(
dummy_batch=sample_batch,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
emnist_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn,
)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
tf.compat.v1.enable_v2_behavior()
emnist_train, emnist_test = dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=False)
input_spec = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0]).element_spec
if FLAGS.model == 'cnn':
model_builder = functools.partial(models.create_conv_dropout_model,
only_digits=False)
elif FLAGS.model == '2nn':
model_builder = functools.partial(models.create_two_hidden_layer_model,
only_digits=False)
else:
raise ValueError('Cannot handle model flag [{!s}].'.format(
FLAGS.model))
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
training_process = iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=emnist_train,
train_clients_per_round=FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = fed_avg_schedule.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn,
)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
tf.compat.v1.enable_v2_behavior()
tff.framework.set_default_executor(
tff.framework.local_executor_factory(max_fanout=25))
train_clientdata, test_dataset = dataset.construct_character_level_datasets(
FLAGS.client_batch_size, FLAGS.client_epochs_per_round,
FLAGS.sequence_length)
test_dataset = test_dataset.cache()
loss_fn_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
# Need to iterate until we find a client with data.
for client_id in train_clientdata.client_ids:
try:
sample_batch = next(
iter(train_clientdata.create_tf_dataset_for_client(client_id)))
break
except StopIteration:
pass # Client had no batches.
sample_batch = tf.nest.map_structure(lambda t: t.numpy(), sample_batch)
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
training_process = iterative_process_builder.from_flags(
dummy_batch=sample_batch,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
client_weight_fn=client_weight_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=training_utils.build_client_datasets_fn(
train_clientdata, FLAGS.clients_per_round),
evaluate_fn=training_utils.build_evaluate_fn(
eval_dataset=test_dataset,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder),
)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
tf.compat.v1.enable_v2_behavior()
cifar_train, cifar_test = dataset.get_federated_cifar100(
client_epochs_per_round=FLAGS.client_epochs_per_round,
train_batch_size=FLAGS.client_batch_size,
crop_shape=CROP_SHAPE)
input_spec = cifar_train.create_tf_dataset_for_client(
cifar_train.client_ids[0]).element_spec
model_builder = functools.partial(
resnet_models.create_resnet18,
input_shape=CROP_SHAPE,
num_classes=NUM_CLASSES)
logging.info('Training model:')
logging.info(model_builder().summary())
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
training_process = iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=cifar_train,
train_clients_per_round=FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = fed_avg_schedule.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=cifar_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
tf.compat.v1.enable_v2_behavior()
train_clientdata, test_dataset = dataset.construct_character_level_datasets(
FLAGS.client_batch_size, FLAGS.client_epochs_per_round,
FLAGS.sequence_length)
test_dataset = test_dataset.cache()
loss_fn_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
input_spec = train_clientdata.create_tf_dataset_for_client(
train_clientdata.client_ids[0]).element_spec
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
training_process = iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
client_weight_fn=client_weight_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=train_clientdata,
train_clients_per_round=FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = fed_avg_schedule.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=test_dataset,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
tf.compat.v1.enable_v2_behavior()
# TODO(b/139129100): Remove this once the local executor is the default.
tff.framework.set_default_executor(
tff.framework.local_executor_factory(max_fanout=25))
cifar_train, cifar_test = dataset.get_federated_cifar100(
client_epochs_per_round=FLAGS.client_epochs_per_round,
train_batch_size=FLAGS.client_batch_size,
crop_shape=CROP_SHAPE)
sample_client_dataset = cifar_train.create_tf_dataset_for_client(
cifar_train.client_ids[0])
sample_batch = tf.nest.map_structure(lambda x: x.numpy(),
next(iter(sample_client_dataset)))
model_builder = functools.partial(
resnet_models.create_resnet18,
input_shape=CROP_SHAPE,
num_classes=NUM_CLASSES)
logging.info('Training model:')
logging.info(model_builder().summary())
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
training_process = iterative_process_builder.from_flags(
dummy_batch=sample_batch,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
training_loop.run(
iterative_process=training_process,
client_datasets_fn=training_utils.build_client_datasets_fn(
cifar_train, FLAGS.clients_per_round),
evaluate_fn=training_utils.build_evaluate_fn(
eval_dataset=cifar_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder),
)
def test_raises_non_callable_client_dataset(self):
FLAGS.total_rounds = 10
FLAGS.experiment_name = 'non_callable_client_dataset'
iterative_process = _build_federated_averaging_process()
federated_data = [[_batch_fn()]]
client_dataset = federated_data
def evaluate_fn(model):
del model
return {}
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
with self.assertRaises(TypeError):
training_loop.run(iterative_process, client_dataset, evaluate_fn)
def test_fedavg_training_decreases_loss(self):
FLAGS.total_rounds = 1
FLAGS.experiment_name = 'fedavg_decreases_loss'
batch = _batch_fn()
federated_data = [[batch]]
iterative_process = _build_federated_averaging_process()
def client_datasets_fn(round_num):
del round_num
return federated_data
def evaluate(model):
keras_model = tff.simulation.models.mnist.create_keras_model(
compile_model=True)
model.assign_weights_to(keras_model)
return {'loss': keras_model.evaluate(batch.x, batch.y)}
initial_state = iterative_process.initialize()
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
final_state = training_loop.run(iterative_process, client_datasets_fn,
evaluate)
self.assertLess(
evaluate(final_state.model)['loss'],
evaluate(initial_state.model)['loss'])
def test_raises_non_callable_evaluate_fn(self):
FLAGS.total_rounds = 10
FLAGS.experiment_name = 'non_callable_evaluate'
iterative_process = _build_federated_averaging_process()
federated_data = [[_batch_fn()]]
def client_datasets_fn(round_num):
del round_num
return federated_data
metrics_dict = {}
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
with self.assertRaises(TypeError):
training_loop.run(iterative_process, client_datasets_fn, metrics_dict)
def main(_):
tf.enable_v2_behavior()
# TODO(b/139129100): Remove this once the local executor is the default.
tff.framework.set_default_executor(
tff.framework.local_executor_factory(max_fanout=25))
emnist_train, emnist_test = dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=False)
sample_client_dataset = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0])
# TODO(b/144382142): Sample batches cannot be eager tensors, since they are
# passed (implicitly) to tff.learning.build_federated_averaging_process.
sample_batch = tf.nest.map_structure(lambda x: x.numpy(),
next(iter(sample_client_dataset)))
model_builder = models.create_autoencoder_model
loss_builder = tf.keras.losses.MeanSquaredError
metrics_builder = lambda: [tf.keras.metrics.MeanSquaredError()]
training_process = iterative_process_builder.from_flags(
dummy_batch=sample_batch,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
emnist_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn,
)
def test_raises_non_str_output_dir(self):
FLAGS.total_rounds = 10
FLAGS.root_output_dir = 1
FLAGS.experiment_name = 'non_str_output_dir'
iterative_process = _build_federated_averaging_process()
federated_data = [[_batch_fn()]]
def client_datasets_fn(round_num):
del round_num
return federated_data
def eval_fn(model):
del model
return {}
with self.assertRaises(TypeError):
training_loop.run(iterative_process, client_datasets_fn, eval_fn)
def main(_):
emnist_train, emnist_test = emnist_ae_dataset.get_emnist_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
only_digits=False)
input_spec = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0]).element_spec
model_builder = emnist_ae_models.create_autoencoder_model
loss_builder = functools.partial(tf.keras.losses.MeanSquaredError,
reduction=tf.keras.losses.Reduction.SUM)
metrics_builder = lambda: [tf.keras.metrics.MeanSquaredError()]
training_process = iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=emnist_train,
train_clients_per_round=FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = fed_avg_schedule.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
evaluate_fn=evaluate_fn,
)
def test_raises_non_iterative_process(self):
FLAGS.total_rounds = 10
FLAGS.experiment_name = 'non_iterative_process'
bad_iterative_process = _build_federated_averaging_process().next
federated_data = [[_batch_fn()]]
def client_datasets_fn(round_num):
del round_num
return federated_data
def evaluate_fn(model):
del model
return {}
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
with self.assertRaises(TypeError):
training_loop.run([bad_iterative_process], client_datasets_fn,
evaluate_fn)
def test_checkpoint_manager_saves_state(self):
FLAGS.total_rounds = 1
FLAGS.experiment_name = 'checkpoint_manager_saves_state'
iterative_process = _build_federated_averaging_process()
federated_data = [[_batch_fn()]]
def client_datasets_fn(round_num):
del round_num
return federated_data
def evaluate_fn(model):
del model
return {}
temp_filepath = self.get_temp_dir()
FLAGS.root_output_dir = temp_filepath
final_state = training_loop.run(iterative_process, client_datasets_fn,
evaluate_fn)
ckpt_manager = checkpoint_manager.FileCheckpointManager(
os.path.join(
temp_filepath,
'checkpoints',
FLAGS.experiment_name,
))
restored_state, restored_round = ckpt_manager.load_latest_checkpoint(
final_state)
self.assertEqual(restored_round, 0)
keras_model = tff.simulation.models.mnist.create_keras_model(
compile_model=True)
restored_state.model.assign_weights_to(keras_model)
restored_loss = keras_model.test_on_batch(federated_data[0][0].x,
federated_data[0][0].y)
final_state.model.assign_weights_to(keras_model)
final_loss = keras_model.test_on_batch(federated_data[0][0].x,
federated_data[0][0].y)
self.assertEqual(final_loss, restored_loss)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
tff.framework.set_default_executor(
tff.framework.local_executor_factory(max_fanout=10))
model_builder = functools.partial(
stackoverflow_models.create_recurrent_model,
vocab_size=FLAGS.vocab_size,
embedding_size=FLAGS.embedding_size,
latent_size=FLAGS.latent_size,
num_layers=FLAGS.num_layers,
shared_embedding=FLAGS.shared_embedding)
loss_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
pad_token, oov_token, _, eos_token = stackoverflow_dataset.get_special_tokens(
FLAGS.vocab_size)
def metrics_builder():
return [
keras_metrics.MaskedCategoricalAccuracy(name='accuracy_with_oov',
masked_tokens=[pad_token]),
keras_metrics.MaskedCategoricalAccuracy(
name='accuracy_no_oov', masked_tokens=[pad_token, oov_token]),
# Notice BOS never appears in ground truth.
keras_metrics.MaskedCategoricalAccuracy(
name='accuracy_no_oov_or_eos',
masked_tokens=[pad_token, oov_token, eos_token]),
keras_metrics.NumBatchesCounter(),
keras_metrics.NumTokensCounter(masked_tokens=[pad_token]),
]
datasets = stackoverflow_dataset.construct_word_level_datasets(
FLAGS.vocab_size, FLAGS.client_batch_size,
FLAGS.client_epochs_per_round, FLAGS.sequence_length,
FLAGS.max_elements_per_user, FLAGS.num_validation_examples)
train_dataset, validation_dataset, test_dataset = datasets
if FLAGS.uniform_weighting:
def client_weight_fn(local_outputs):
del local_outputs
return 1.0
else:
def client_weight_fn(local_outputs):
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
def model_fn():
return tff.learning.from_keras_model(
model_builder(),
loss_builder(),
input_spec=validation_dataset.element_spec,
metrics=metrics_builder())
if FLAGS.noise_multiplier is not None:
if not FLAGS.uniform_weighting:
raise ValueError(
'Differential privacy is only implemented for uniform weighting.'
)
dp_query = tff.utils.build_dp_query(
clip=FLAGS.clip,
noise_multiplier=FLAGS.noise_multiplier,
expected_total_weight=FLAGS.clients_per_round,
adaptive_clip_learning_rate=FLAGS.adaptive_clip_learning_rate,
target_unclipped_quantile=FLAGS.target_unclipped_quantile,
clipped_count_budget_allocation=FLAGS.
clipped_count_budget_allocation,
expected_num_clients=FLAGS.clients_per_round,
per_vector_clipping=FLAGS.per_vector_clipping,
model=model_fn())
dp_aggregate_fn, _ = tff.utils.build_dp_aggregate(dp_query)
else:
dp_aggregate_fn = None
server_optimizer_fn = optimizer_utils.create_optimizer_fn_from_flags(
'server')
client_optimizer_fn = optimizer_utils.create_optimizer_fn_from_flags(
'client')
training_process = (
tff.learning.federated_averaging.build_federated_averaging_process(
model_fn=model_fn,
server_optimizer_fn=server_optimizer_fn,
client_weight_fn=client_weight_fn,
client_optimizer_fn=client_optimizer_fn,
stateful_delta_aggregate_fn=dp_aggregate_fn))
adaptive_clipping = (FLAGS.adaptive_clip_learning_rate > 0)
training_process = dp_utils.DPFedAvgProcessAdapter(
training_process, FLAGS.per_vector_clipping, adaptive_clipping)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=validation_dataset,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=dp_utils.assign_weights_to_keras_model)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=validation_dataset.concatenate(test_dataset),
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=dp_utils.assign_weights_to_keras_model)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(training_process,
client_datasets_fn,
evaluate_fn,
test_fn=test_fn)
def run_federated(
iterative_process_builder: Callable[...,
tff.templates.IterativeProcess],
assign_weights_fn: Callable[[Any, tf.keras.Model], None],
client_epochs_per_round: int,
client_batch_size: int,
clients_per_round: int,
max_batches_per_client: Optional[int] = -1,
client_datasets_random_seed: Optional[int] = None,
vocab_size: Optional[int] = 10000,
num_oov_buckets: Optional[int] = 1,
sequence_length: Optional[int] = 20,
max_elements_per_user: Optional[int] = 1000,
num_validation_examples: Optional[int] = 10000,
embedding_size: Optional[int] = 96,
latent_size: Optional[int] = 670,
num_layers: Optional[int] = 1,
shared_embedding: Optional[bool] = False,
total_rounds: Optional[int] = 1500,
experiment_name: Optional[str] = 'federated_so_nwp',
root_output_dir: Optional[str] = '/tmp/fed_opt',
max_eval_batches: Optional[int] = None,
**kwargs):
"""Runs an iterative process on the Stack Overflow next word prediction task.
This method will load and pre-process dataset and construct a model used for
the task. It then uses `iterative_process_builder` to create an iterative
process that it applies to the task, using
`tensorflow_federated.python.research.utils.training_loop`.
We assume that the iterative process has the following functional type
signatures:
* `initialize`: `( -> S@SERVER)` where `S` represents the server state.
* `next`: `<S@SERVER, {B*}@CLIENTS> -> <S@SERVER, T@SERVER>` where `S`
represents the server state, `{B*}` represents the client datasets,
and `T` represents a python `Mapping` object.
Args:
iterative_process_builder: A function that accepts a no-arg `model_fn`, a
`client_weight_fn` and a `dataset_preprocess_comp`, and returns a
`tff.templates.IterativeProcess`. The `model_fn` must return a
`tff.learning.Model`.
assign_weights_fn: A function that accepts the server state `S` and a
`tf.keras.Model`, and updates the weights in the Keras model. This is used
to do evaluation using Keras.
client_epochs_per_round: An integer representing the number of epochs of
training performed per client in each training round.
client_batch_size: An integer representing the batch size used on clients.
clients_per_round: An integer representing the number of clients
participating in each round.
max_batches_per_client: An optional int specifying the number of batches
taken by each client at each round. If `-1`, the entire client dataset is
used.
client_datasets_random_seed: An optional int used to seed which clients are
sampled at each round. If `None`, no seed is used.
vocab_size: Integer dictating the number of most frequent words to use in
the vocabulary.
num_oov_buckets: The number of out-of-vocabulary buckets to use.
sequence_length: The maximum number of words to take for each sequence.
max_elements_per_user: The maximum number of elements processed for each
client's dataset.
num_validation_examples: The number of test examples to use for validation.
embedding_size: The dimension of the word embedding layer.
latent_size: The dimension of the latent units in the recurrent layers.
num_layers: The number of stacked recurrent layers to use.
shared_embedding: Boolean indicating whether to tie input and output
embeddings.
total_rounds: The number of federated training rounds.
experiment_name: The name of the experiment being run. This will be appended
to the `root_output_dir` for purposes of writing outputs.
root_output_dir: The name of the root output directory for writing
experiment outputs.
max_eval_batches: If set to a positive integer, evaluation datasets are
capped to at most that many batches. If set to None or a nonpositive
integer, the full evaluation datasets are used.
**kwargs: Additional arguments configuring the training loop. For details
on supported arguments, see
`tensorflow_federated/python/research/utils/training_utils.py`.
"""
model_builder = functools.partial(
stackoverflow_models.create_recurrent_model,
vocab_size=vocab_size,
num_oov_buckets=num_oov_buckets,
embedding_size=embedding_size,
latent_size=latent_size,
num_layers=num_layers,
shared_embedding=shared_embedding)
loss_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
special_tokens = stackoverflow_dataset.get_special_tokens(
vocab_size, num_oov_buckets)
pad_token = special_tokens.pad
oov_tokens = special_tokens.oov
eos_token = special_tokens.eos
def metrics_builder():
return [
keras_metrics.MaskedCategoricalAccuracy(name='accuracy_with_oov',
masked_tokens=[pad_token]),
keras_metrics.MaskedCategoricalAccuracy(name='accuracy_no_oov',
masked_tokens=[pad_token] +
oov_tokens),
# Notice BOS never appears in ground truth.
keras_metrics.MaskedCategoricalAccuracy(
name='accuracy_no_oov_or_eos',
masked_tokens=[pad_token, eos_token] + oov_tokens),
keras_metrics.NumBatchesCounter(),
keras_metrics.NumTokensCounter(masked_tokens=[pad_token])
]
train_clientdata, _, _ = tff.simulation.datasets.stackoverflow.load_data()
# TODO(b/161914546): consider moving evaluation to use
# `tff.learning.build_federated_evaluation` to get metrics over client
# distributions, as well as the example weight means from this centralized
# evaluation.
_, validation_dataset, test_dataset = stackoverflow_dataset.get_centralized_datasets(
vocab_size=vocab_size,
max_seq_len=sequence_length,
train_batch_size=client_batch_size,
max_validation_batches=max_eval_batches,
max_test_batches=max_eval_batches,
num_validation_examples=num_validation_examples,
num_oov_buckets=num_oov_buckets)
train_dataset_preprocess_comp = stackoverflow_dataset.create_train_dataset_preprocess_fn(
vocab=stackoverflow_dataset.create_vocab(vocab_size),
num_oov_buckets=num_oov_buckets,
client_batch_size=client_batch_size,
client_epochs_per_round=client_epochs_per_round,
max_seq_len=sequence_length,
max_training_elements_per_user=max_elements_per_user,
max_batches_per_user=max_batches_per_client)
input_spec = train_dataset_preprocess_comp.type_signature.result.element
def tff_model_fn() -> tff.learning.Model:
return tff.learning.from_keras_model(keras_model=model_builder(),
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
training_process = iterative_process_builder(
tff_model_fn, client_weight_fn=client_weight_fn)
training_process = tff.simulation.compose_dataset_computation_with_iterative_process(
train_dataset_preprocess_comp, training_process)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=train_clientdata,
train_clients_per_round=clients_per_round,
random_seed=client_datasets_random_seed)
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=validation_dataset,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=validation_dataset.concatenate(test_dataset),
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
test_fn=test_fn,
total_rounds=total_rounds,
experiment_name=experiment_name,
root_output_dir=root_output_dir,
**kwargs)
def run_federated(
iterative_process_builder: Callable[..., tff.templates.IterativeProcess],
client_epochs_per_round: int,
client_batch_size: int,
clients_per_round: int,
max_batches_per_client: Optional[int] = -1,
client_datasets_random_seed: Optional[int] = None,
emnist_model: Optional[str] = 'cnn',
total_rounds: Optional[int] = 1500,
experiment_name: Optional[str] = 'federated_emnist_cr',
root_output_dir: Optional[str] = '/tmp/fed_opt',
max_eval_batches: Optional[int] = None,
**kwargs):
"""Runs an iterative process on the EMNIST character recognition task.
This method will load and pre-process dataset and construct a model used for
the task. It then uses `iterative_process_builder` to create an iterative
process that it applies to the task, using
`tensorflow_federated.python.research.utils.training_loop`.
We assume that the iterative process has the following functional type
signatures:
* `initialize`: `( -> S@SERVER)` where `S` represents the server state.
* `next`: `<S@SERVER, {B*}@CLIENTS> -> <S@SERVER, T@SERVER>` where `S`
represents the server state, `{B*}` represents the client datasets,
and `T` represents a python `Mapping` object.
Moreover, the server state must have an attribute `model` of type
`tff.learning.ModelWeights`.
Args:
iterative_process_builder: A function that accepts a no-arg `model_fn`, and
returns a `tff.templates.IterativeProcess`. The `model_fn` must return a
`tff.learning.Model`.
client_epochs_per_round: An integer representing the number of epochs of
training performed per client in each training round.
client_batch_size: An integer representing the batch size used on clients.
clients_per_round: An integer representing the number of clients
participating in each round.
max_batches_per_client: An optional int specifying the number of batches
taken by each client at each round. If `-1`, the entire client dataset is
used.
client_datasets_random_seed: An optional int used to seed which clients are
sampled at each round. If `None`, no seed is used.
emnist_model: A string specifying the model used for character recognition.
Can be one of `cnn` and `2nn`, corresponding to a CNN model and a densely
connected 2-layer model (respectively).
total_rounds: The number of federated training rounds.
experiment_name: The name of the experiment being run. This will be appended
to the `root_output_dir` for purposes of writing outputs.
root_output_dir: The name of the root output directory for writing
experiment outputs.
max_eval_batches: If set to a positive integer, evaluation datasets are
capped to at most that many batches. If set to None or a nonpositive
integer, the full evaluation datasets are used.
**kwargs: Additional arguments configuring the training loop. For details
on supported arguments, see
`tensorflow_federated/python/research/utils/training_utils.py`.
"""
emnist_train, _ = emnist_dataset.get_emnist_datasets(
client_batch_size,
client_epochs_per_round,
max_batches_per_client=max_batches_per_client,
only_digits=False)
_, emnist_test = emnist_dataset.get_centralized_datasets(
train_batch_size=client_batch_size,
max_test_batches=max_eval_batches,
only_digits=False)
input_spec = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0]).element_spec
if emnist_model == 'cnn':
model_builder = functools.partial(
emnist_models.create_conv_dropout_model, only_digits=False)
elif emnist_model == '2nn':
model_builder = functools.partial(
emnist_models.create_two_hidden_layer_model, only_digits=False)
else:
raise ValueError(
'Cannot handle model flag [{!s}], must be one of {!s}.'.format(
emnist_model, EMNIST_MODELS))
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
def tff_model_fn() -> tff.learning.Model:
return tff.learning.from_keras_model(
keras_model=model_builder(),
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
training_process = iterative_process_builder(tff_model_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=emnist_train,
train_clients_per_round=clients_per_round,
random_seed=client_datasets_random_seed)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
test_fn=evaluate_fn,
total_rounds=total_rounds,
experiment_name=experiment_name,
root_output_dir=root_output_dir,
**kwargs)
def run_federated(
iterative_process_builder: Callable[...,
tff.templates.IterativeProcess],
assign_weights_fn: Callable[[Any, tf.keras.Model], None],
client_epochs_per_round: int,
client_batch_size: int,
clients_per_round: int,
max_batches_per_client: Optional[int] = -1,
client_datasets_random_seed: Optional[int] = None,
crop_size: Optional[int] = 24,
total_rounds: Optional[int] = 1500,
experiment_name: Optional[str] = 'federated_cifar100',
root_output_dir: Optional[str] = '/tmp/fed_opt',
**kwargs):
"""Runs an iterative process on the CIFAR-100 classification task.
This method will load and pre-process dataset and construct a model used for
the task. It then uses `iterative_process_builder` to create an iterative
process that it applies to the task, using
`tensorflow_federated.python.research.utils.training_loop`.
We assume that the iterative process has the following functional type
signatures:
* `initialize`: `( -> S@SERVER)` where `S` represents the server state.
* `next`: `<S@SERVER, {B*}@CLIENTS> -> <S@SERVER, T@SERVER>` where `S`
represents the server state, `{B*}` represents the client datasets,
and `T` represents a python `Mapping` object.
Args:
iterative_process_builder: A function that accepts a no-arg `model_fn`, and
returns a `tff.templates.IterativeProcess`. The `model_fn` must return a
`tff.learning.Model`.
assign_weights_fn: A function that accepts the server state `S` and a
`tf.keras.Model`, and updates the weights in the Keras model. This is used
to do evaluation using Keras.
client_epochs_per_round: An integer representing the number of epochs of
training performed per client in each training round.
client_batch_size: An integer representing the batch size used on clients.
clients_per_round: An integer representing the number of clients
participating in each round.
max_batches_per_client: An optional int specifying the number of batches
taken by each client at each round. If `-1`, the entire client dataset is
used.
client_datasets_random_seed: An optional int used to seed which clients are
sampled at each round. If `None`, no seed is used.
crop_size: An optional integer representing the resulting size of input
images after preprocessing.
total_rounds: The number of federated training rounds.
experiment_name: The name of the experiment being run. This will be appended
to the `root_output_dir` for purposes of writing outputs.
root_output_dir: The name of the root output directory for writing
experiment outputs.
**kwargs: Additional arguments configuring the training loop. For details
on supported arguments, see
`tensorflow_federated/python/research/utils/training_utils.py`.
"""
crop_shape = (crop_size, crop_size, 3)
cifar_train, cifar_test = cifar100_dataset.get_federated_cifar100(
client_epochs_per_round=client_epochs_per_round,
train_batch_size=client_batch_size,
crop_shape=crop_shape,
max_batches_per_client=max_batches_per_client)
input_spec = cifar_train.create_tf_dataset_for_client(
cifar_train.client_ids[0]).element_spec
model_builder = functools.partial(resnet_models.create_resnet18,
input_shape=crop_shape,
num_classes=NUM_CLASSES)
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
def tff_model_fn() -> tff.learning.Model:
return tff.learning.from_keras_model(keras_model=model_builder(),
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
training_process = iterative_process_builder(tff_model_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=cifar_train,
train_clients_per_round=clients_per_round,
random_seed=client_datasets_random_seed)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=cifar_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
test_fn=evaluate_fn,
total_rounds=total_rounds,
experiment_name=experiment_name,
root_output_dir=root_output_dir,
**kwargs)
def run_federated(
iterative_process_builder: Callable[...,
tff.templates.IterativeProcess],
assign_weights_fn: Callable[[Any, tf.keras.Model], None],
client_epochs_per_round: int,
client_batch_size: int,
clients_per_round: int,
max_batches_per_client: Optional[int] = -1,
client_datasets_random_seed: Optional[int] = None,
sequence_length: Optional[int] = 80,
total_rounds: Optional[int] = 1500,
experiment_name: Optional[str] = 'federated_shakespeare',
root_output_dir: Optional[str] = '/tmp/fed_opt',
**kwargs):
"""Runs an iterative process on a Shakespeare next character prediction task.
This method will load and pre-process dataset and construct a model used for
the task. It then uses `iterative_process_builder` to create an iterative
process that it applies to the task, using
`tensorflow_federated.python.research.utils.training_loop`.
We assume that the iterative process has the following functional type
signatures:
* `initialize`: `( -> S@SERVER)` where `S` represents the server state.
* `next`: `<S@SERVER, {B*}@CLIENTS> -> <S@SERVER, T@SERVER>` where `S`
represents the server state, `{B*}` represents the client datasets,
and `T` represents a python `Mapping` object.
Args:
iterative_process_builder: A function that accepts a no-arg `model_fn`, and
a `client_weight_fn`, and returns a `tff.templates.IterativeProcess`. The
`model_fn` must return a `tff.learning.Model`.
assign_weights_fn: A function that accepts the server state `S` and a
`tf.keras.Model`, and updates the weights in the Keras model. This is used
to do evaluation using Keras.
client_epochs_per_round: An integer representing the number of epochs of
training performed per client in each training round.
client_batch_size: An integer representing the batch size used on clients.
clients_per_round: An integer representing the number of clients
participating in each round.
max_batches_per_client: An optional int specifying the number of batches
taken by each client at each round. If `-1`, the entire client dataset is
used.
client_datasets_random_seed: An optional int used to seed which clients are
sampled at each round. If `None`, no seed is used.
sequence_length: An int specifying the length of the character sequences
used for prediction.
total_rounds: The number of federated training rounds.
experiment_name: The name of the experiment being run. This will be appended
to the `root_output_dir` for purposes of writing outputs.
root_output_dir: The name of the root output directory for writing
experiment outputs.
**kwargs: Additional arguments configuring the training loop. For details
on supported arguments, see
`tensorflow_federated/python/research/utils/training_utils.py`.
"""
train_clientdata = shakespeare_dataset.construct_character_level_datasets(
client_batch_size=client_batch_size,
client_epochs_per_round=client_epochs_per_round,
sequence_length=sequence_length,
max_batches_per_client=max_batches_per_client)
_, test_dataset = shakespeare_dataset.construct_centralized_datasets()
test_dataset = test_dataset.cache()
model_builder = functools.partial(create_shakespeare_model,
sequence_length=sequence_length)
loss_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
input_spec = train_clientdata.create_tf_dataset_for_client(
train_clientdata.client_ids[0]).element_spec
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
def tff_model_fn() -> tff.learning.Model:
return tff.learning.from_keras_model(keras_model=model_builder(),
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
training_process = iterative_process_builder(
tff_model_fn, client_weight_fn=client_weight_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=train_clientdata,
train_clients_per_round=clients_per_round,
random_seed=client_datasets_random_seed)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=test_dataset,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
test_fn=evaluate_fn,
total_rounds=total_rounds,
experiment_name=experiment_name,
root_output_dir=root_output_dir,
**kwargs)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
train_clientdata = shakespeare_dataset.construct_character_level_datasets(
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
sequence_length=FLAGS.sequence_length,
max_batches_per_client=FLAGS.max_batches_per_client,
shuffle_buffer_size=0)
eval_train_dataset, eval_test_dataset = (
shakespeare_dataset.construct_centralized_datasets())
loss_fn_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
input_spec = train_clientdata.create_tf_dataset_for_client(
train_clientdata.client_ids[0]).element_spec
if FLAGS.client_weight == 'uniform':
def client_weight_fn(local_outputs):
del local_outputs
return 1.0
elif FLAGS.client_weight == 'num_tokens':
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
else:
raise ValueError(
'Unsupported client_weight flag [{!s}]. Currently only '
'`uniform` and `num_tokens` are supported.'.format(
FLAGS.client_weight))
training_process = decay_iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
client_weight_fn=client_weight_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_clientdata,
FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = adaptive_fed_avg.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=eval_test_dataset,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
train_evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=eval_train_dataset,
model_builder=model_builder,
loss_builder=loss_fn_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
train_eval_fn=train_evaluate_fn,
)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
model_builder = functools.partial(
stackoverflow_models.create_recurrent_model,
vocab_size=FLAGS.vocab_size,
embedding_size=FLAGS.embedding_size,
latent_size=FLAGS.latent_size,
num_layers=FLAGS.num_layers,
shared_embedding=FLAGS.shared_embedding)
loss_builder = functools.partial(
tf.keras.losses.SparseCategoricalCrossentropy, from_logits=True)
special_tokens = stackoverflow_dataset.get_special_tokens(FLAGS.vocab_size)
pad_token = special_tokens.pad
oov_tokens = special_tokens.oov
eos_token = special_tokens.eos
def metrics_builder():
return [
keras_metrics.MaskedCategoricalAccuracy(name='accuracy_with_oov',
masked_tokens=[pad_token]),
keras_metrics.MaskedCategoricalAccuracy(name='accuracy_no_oov',
masked_tokens=[pad_token] +
oov_tokens),
# Notice BOS never appears in ground truth.
keras_metrics.MaskedCategoricalAccuracy(
name='accuracy_no_oov_or_eos',
masked_tokens=[pad_token, eos_token] + oov_tokens),
keras_metrics.NumBatchesCounter(),
keras_metrics.NumTokensCounter(masked_tokens=[pad_token])
]
train_set, validation_set, test_set = stackoverflow_dataset.construct_word_level_datasets(
FLAGS.vocab_size,
FLAGS.client_batch_size,
FLAGS.client_epochs_per_round,
FLAGS.sequence_length,
FLAGS.max_elements_per_user,
FLAGS.num_validation_examples,
max_batches_per_user=FLAGS.max_batches_per_client)
input_spec = validation_set.element_spec
if FLAGS.client_weight == 'uniform':
def client_weight_fn(local_outputs):
del local_outputs
return 1.0
elif FLAGS.client_weight == 'num_tokens':
def client_weight_fn(local_outputs):
# Num_tokens is a tensor with type int64[1], to use as a weight need
# a float32 scalar.
return tf.cast(tf.squeeze(local_outputs['num_tokens']), tf.float32)
else:
raise ValueError(
'Unsupported client_weight flag [{!s}]. Currently only '
'`uniform` and `num_tokens` are supported.'.format(
FLAGS.client_weight))
training_process = decay_iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
client_weight_fn=client_weight_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_set,
FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = adaptive_fed_avg.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=validation_set,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=validation_set.concatenate(test_set),
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(training_process,
client_datasets_fn,
evaluate_fn,
test_fn=test_fn)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Too many command-line arguments.')
stackoverflow_train, stackoverflow_validation, stackoverflow_test = stackoverflow_lr_dataset.get_stackoverflow_datasets(
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size,
client_batch_size=FLAGS.client_batch_size,
client_epochs_per_round=FLAGS.client_epochs_per_round,
max_training_elements_per_user=FLAGS.max_elements_per_user,
max_batches_per_user=FLAGS.max_batches_per_client,
num_validation_examples=FLAGS.num_validation_examples)
input_spec = stackoverflow_train.create_tf_dataset_for_client(
stackoverflow_train.client_ids[0]).element_spec
model_builder = functools.partial(
stackoverflow_lr_models.create_logistic_model,
vocab_tokens_size=FLAGS.vocab_tokens_size,
vocab_tags_size=FLAGS.vocab_tags_size)
loss_builder = functools.partial(tf.keras.losses.BinaryCrossentropy,
from_logits=False,
reduction=tf.keras.losses.Reduction.SUM)
if FLAGS.client_weight == 'uniform':
def client_weight_fn(local_outputs):
del local_outputs
return 1.0
elif FLAGS.client_weight == 'num_samples':
client_weight_fn = None
else:
raise ValueError(
'Unsupported client_weight flag [{!s}]. Currently only '
'`uniform` and `num_samples` are supported.'.format(
FLAGS.client_weight))
training_process = decay_iterative_process_builder.from_flags(
input_spec=input_spec,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
client_weight_fn=client_weight_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
stackoverflow_train,
FLAGS.clients_per_round,
random_seed=FLAGS.client_datasets_random_seed)
assign_weights_fn = adaptive_fed_avg.ServerState.assign_weights_to_keras_model
evaluate_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
eval_dataset=stackoverflow_validation,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
test_fn = training_utils.build_evaluate_fn(
model_builder=model_builder,
# Use both val and test for symmetry with other experiments, which
# evaluate on the entire test set.
eval_dataset=stackoverflow_validation.concatenate(stackoverflow_test),
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(training_process,
client_datasets_fn,
evaluate_fn,
test_fn=test_fn)
def main(argv):
if len(argv) > 1:
raise app.UsageError('Expected no command-line arguments, '
'got: {}'.format(argv))
emnist_train, emnist_test = emnist_dataset.get_emnist_datasets(
FLAGS.client_batch_size, FLAGS.client_epochs_per_round, only_digits=False)
if FLAGS.model == 'cnn':
model_builder = functools.partial(
emnist_models.create_conv_dropout_model, only_digits=False)
elif FLAGS.model == '2nn':
model_builder = functools.partial(
emnist_models.create_two_hidden_layer_model, only_digits=False)
else:
raise ValueError('Cannot handle model flag [{!s}].'.format(FLAGS.model))
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
if FLAGS.uniform_weighting:
def client_weight_fn(local_outputs):
del local_outputs
return 1.0
else:
client_weight_fn = None # Defaults to the number of examples per client.
def model_fn():
return tff.learning.from_keras_model(
model_builder(),
loss_builder(),
input_spec=emnist_test.element_spec,
metrics=metrics_builder())
if FLAGS.noise_multiplier is not None:
if not FLAGS.uniform_weighting:
raise ValueError(
'Differential privacy is only implemented for uniform weighting.')
dp_query = tff.utils.build_dp_query(
clip=FLAGS.clip,
noise_multiplier=FLAGS.noise_multiplier,
expected_total_weight=FLAGS.clients_per_round,
adaptive_clip_learning_rate=FLAGS.adaptive_clip_learning_rate,
target_unclipped_quantile=FLAGS.target_unclipped_quantile,
clipped_count_budget_allocation=FLAGS.clipped_count_budget_allocation,
expected_num_clients=FLAGS.clients_per_round,
per_vector_clipping=FLAGS.per_vector_clipping,
model=model_fn())
weights_type = tff.learning.framework.weights_type_from_model(model_fn)
aggregation_process = tff.utils.build_dp_aggregate_process(
weights_type.trainable, dp_query)
else:
aggregation_process = None
server_optimizer_fn = optimizer_utils.create_optimizer_fn_from_flags('server')
client_optimizer_fn = optimizer_utils.create_optimizer_fn_from_flags('client')
iterative_process = tff.learning.build_federated_averaging_process(
model_fn=model_fn,
server_optimizer_fn=server_optimizer_fn,
client_weight_fn=client_weight_fn,
client_optimizer_fn=client_optimizer_fn,
aggregation_process=aggregation_process)
client_datasets_fn = training_utils.build_client_datasets_fn(
emnist_train, FLAGS.clients_per_round)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=dp_utils.assign_weights_to_keras_model)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(
iterative_process=iterative_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
)
def run_federated(
iterative_process_builder: Callable[...,
tff.templates.IterativeProcess],
assign_weights_fn: Callable[[Any, tf.keras.Model], None],
client_epochs_per_round: int,
client_batch_size: int,
clients_per_round: int,
client_datasets_random_seed: Optional[int] = None,
emnist_model: Optional[str] = 'cnn'):
"""Runs an iterative process on the EMNIST character recognition task.
This method will load and pre-process dataset and construct a model used for
the task. It then uses `iterative_process_builder` to create an iterative
process that it applies to the task, using
`tensorflow_federated.python.research.utils.training_loop`.
We assume that the iterative process has the following functional type
signatures:
* `initialize`: `( -> S@SERVER)` where `S` represents the server state.
* `next`: `<S@SERVER, {B*}@CLIENTS> -> <S@SERVER, T@SERVER>` where `S`
represents the server state, `{B*}` represents the client datasets,
and `T` represents a python `Mapping` object.
Args:
iterative_process_builder: A function that accepts a no-arg `model_fn`, and
returns a `tff.templates.IterativeProcess`. The `model_fn` must return a
`tff.learning.Model`.
assign_weights_fn: A function that accepts the server state `S` and a
`tf.keras.Model`, and updates the weights in the Keras model. This is used
to do evaluation using Keras.
client_epochs_per_round: An integer representing the number of epochs of
training performed per client in each training round.
client_batch_size: An integer representing the batch size used on clients.
clients_per_round: An integer representing the number of clients
participating in each round.
client_datasets_random_seed: An optional int used to seed which clients are
sampled at each round. If `None`, no seed is used.
emnist_model: A string specifying the model used for character recognition.
Can be one of `cnn` and `2nn`, corresponding to a CNN model and a densely
connected 2-layer model (respectively).
"""
emnist_train, emnist_test = emnist_dataset.get_emnist_datasets(
client_batch_size, client_epochs_per_round, only_digits=False)
input_spec = emnist_train.create_tf_dataset_for_client(
emnist_train.client_ids[0]).element_spec
if emnist_model == 'cnn':
model_builder = functools.partial(
emnist_models.create_conv_dropout_model, only_digits=False)
elif emnist_model == '2nn':
model_builder = functools.partial(
emnist_models.create_two_hidden_layer_model, only_digits=False)
else:
raise ValueError(
'Cannot handle model flag [{!s}], must be one of {!s}.'.format(
emnist_model, EMNIST_MODELS))
loss_builder = tf.keras.losses.SparseCategoricalCrossentropy
metrics_builder = lambda: [tf.keras.metrics.SparseCategoricalAccuracy()]
def tff_model_fn() -> tff.learning.Model:
return tff.learning.from_keras_model(keras_model=model_builder(),
input_spec=input_spec,
loss=loss_builder(),
metrics=metrics_builder())
training_process = iterative_process_builder(tff_model_fn)
client_datasets_fn = training_utils.build_client_datasets_fn(
train_dataset=emnist_train,
train_clients_per_round=clients_per_round,
random_seed=client_datasets_random_seed)
evaluate_fn = training_utils.build_evaluate_fn(
eval_dataset=emnist_test,
model_builder=model_builder,
loss_builder=loss_builder,
metrics_builder=metrics_builder,
assign_weights_to_keras_model=assign_weights_fn)
logging.info('Training model:')
logging.info(model_builder().summary())
training_loop.run(iterative_process=training_process,
client_datasets_fn=client_datasets_fn,
validation_fn=evaluate_fn,
test_fn=evaluate_fn)
