为什么在Keras-to-Tensorflow导出示例中keras.models.model_from_config()引发ValueError? [英] Why is ValueError thrown by keras.models.model_from_config() in the Keras-to-Tensorflow exporting example?
问题描述
Keras网站具有本文有关将Keras模型导出到核心Tensorflow的文章.但是,步骤
The Keras website has this article about exporting Keras models to core Tensorflow. However the step
new_model = model_from_config(config)
引发错误:
Traceback (most recent call last):
File "/home/hal9000/tf_serving_experiments/sndbx.py", line 38, in <module>
new_model = model_from_config(config)
File "/home/hal9000/keras2env/local/lib/python2.7/site-packages/keras/models.py", line 304, in model_from_config
return layer_module.deserialize(config, custom_objects=custom_objects)
File "/home/hal9000/keras2env/local/lib/python2.7/site-packages/keras/layers/__init__.py", line 54, in deserialize
printable_module_name='layer')
File "/home/hal9000/keras2env/local/lib/python2.7/site-packages/keras/utils/generic_utils.py", line 122, in deserialize_keras_object
raise ValueError('Improper config format: ' + str(config))
ValueError: Improper config format: {'layers': [{'class_name': 'InputLayer', 'config': {...
人们建议,自v2发行以来,在Keras v1模型中使用model_from_config()
方法存在问题.但是,我已经尝试使用各种不同版本的模型进行了此操作,包括内置的Keras ResNet50
和在该脚本中定义的简单单层MLP.都抛出相同的错误.
People have suggested that there's a problem using the model_from_config()
method with Keras v1 models since the release of v2. However I have tried this with a range of models from different versions, including the built-in Keras ResNet50
and a simple single-layer MLP defined in that very script. All throw the same error.
看来keras.utils.generic_utils.deserialize_keras_object()
方法想在config
词典中找到键"class_name"
或"config"
(
It would appear that the keras.utils.generic_utils.deserialize_keras_object()
method wants to find a key "class_name"
or "config"
in the config
dictionary (see source). Upon inspection of the config
dict that get_config()
creates, there is no such entry; instead there are keys:
-
"input_layers"
-
"layers"
-
"name"
-
"output_layers"
"input_layers"
"layers"
"name"
"output_layers"
我还打开了一个问题 https://github.com/fchollet/keras/issues/7232 ,并创建了一个Gist,您可以自己运行并查看错误. https://gist.github.com/9thDimension/e1cdb2cd11f11309bfaf297b276f7456
I also opened an issue https://github.com/fchollet/keras/issues/7232 and created a Gist that you can run for yourself and see the error. https://gist.github.com/9thDimension/e1cdb2cd11f11309bfaf297b276f7456
- Keras 2.0.6
- Tensorflow 1.1.0
推荐答案
keras.models.Model.get_config()
的反函数似乎是keras.models.Model.from_config()
,而不是keras.models.model_from_config()
The inverse of keras.models.Model.get_config()
seems to be keras.models.Model.from_config()
, not keras.models.model_from_config()
https://keras.io/models/about-keras-models/. Try that instead?
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