Я пытаюсь оптимизировать модель Tensorflow, чтобы обрезать простую нейронную сеть. Вот мой код:
from __future__ import absolute_import, division, print_function, unicode_literals, unicode_literals
import tensorflow as tf
from tensorflow import keras
import numpy as np
import matplotlib.pyplot as plt
fashion_mnist = keras.datasets.fashion_mnist
(train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data()
class_names = ['T-shirt/top', 'Trouser', 'Pullover', 'Dress', 'Coat',
'Sandal', 'Shirt', 'Sneaker', 'Bag', 'Ankle boot']
train_images = train_images / 255.0
test_images = test_images / 255.0
model = keras.Sequential([
keras.layers.Flatten(input_shape=(28, 28)),
keras.layers.Dense(128, activation=tf.nn.relu),
keras.layers.Dense(10, activation=tf.nn.softmax)
])
import tensorflow_model_optimization as tfmot
pruning_schedule = tfmot.sparsity.keras.PolynomialDecay(
initial_sparsity=0.0, final_sparsity=0.5,
begin_step=2000, end_step=4000)
model_for_pruning = tfmot.sparsity.keras.prune_low_magnitude(model, pruning_schedule=pruning_schedule)
model_for_pruning.compile(optimizer='adam',
loss='sparse_categorical_crossentropy',
metrics=['accuracy'])
from tensorflow.keras.callbacks import TensorBoard
tensorboard=TensorBoard(log_dir='D:\Python\logs', histogram_freq=0,
write_graph=True, write_images=True)
model_for_pruning.fit(train_images, train_labels, epochs=5,callbacks=tensorboard)
#tensorboard --logdir D:\Python\logs
Я получаю следующую ошибку:
File "<ipython-input-1-8f75575649d2>", line 52, in <module>
model_for_pruning = tfmot.sparsity.keras.prune_low_magnitude(model, pruning_schedule=pruning_schedule)
File "C:\Users\Rubens\Anaconda3\lib\site-packages\tensorflow_model_optimization\python\core\sparsity\keras\prune.py", line 152, in prune_low_magnitude
to_prune, input_tensors=None, clone_function=_add_pruning_wrapper)
TypeError: clone_model() got an unexpected keyword argument 'clone_function'
То есть clone function
не принадлежит файлу Кераса models.py
. Я попытался добавить **kwargs
к нему, но безуспешно:
def clone_model(model, input_tensors=None,**kwargs):
"""Clone any `Model` instance.
Model cloning is similar to calling a model on new inputs,
except that it creates new layers (and thus new weights) instead
of sharing the weights of the existing layers.
# Arguments
model: Instance of `Model`
(could be a functional model or a Sequential model).
input_tensors: optional list of input tensors
to build the model upon. If not provided,
placeholders will be created.
# Returns
An instance of `Model` reproducing the behavior
of the original model, on top of new inputs tensors,
using newly instantiated weights.
# Raises
ValueError: in case of invalid `model` argument value.
"""
if isinstance(model, Sequential):
return _clone_sequential_model(model, input_tensors=input_tensors)
else:
return _clone_functional_model(model, input_tensors=input_tensors)
Это конец файла prune.py
, принадлежащего Tensorflow Model Optimization (уведомление clone_function=_strip_pruning_wrapper
):
def _strip_pruning_wrapper(layer):
if isinstance(layer, pruning_wrapper.PruneLowMagnitude):
# The _batch_input_shape attribute in the first layer makes a Sequential
# model to be built. This makes sure that when we remove the wrapper from
# the first layer the model's built state preserves.
if not hasattr(layer.layer, '_batch_input_shape') and hasattr(
layer, '_batch_input_shape'):
layer.layer._batch_input_shape = layer._batch_input_shape
return layer.layer
return layer
return keras.models.clone_model(
model, input_tensors=None, clone_function=_strip_pruning_wrapper)
Все включенные библиотеки обновлены. Любые идеи о том, как преодолеть эту ошибку?
Заранее спасибо