Coremltools：传递给优化器的意外关键字参数：learning_rate

编程问答 2022-06-03

问题描述

我正在使用以下代码将keras模型转换为mlmodel：

import coremltools
import keras




output_labels = list(range(1,43))
your_model = coremltools.converters.keras.convert('my_model.h5',input_names=['image'],output_names=['output'],class_labels=output_labels,image_input_names='image')

#your_model.author = 'your name'
#your_model.short_description = 'Digit Recognition with MNIST'
#your_model.input_description['image'] = 'Takes as input an image'
#your_model.output_description['output'] = 'Prediction of Digit

your_model.save('your_model_name.mlmodel')

运行代码时，出现以下错误：

Users/admin/PycharmProjects/TSR37/venv/bin/python /Users/admin/PycharmProjects/TSR37/coremlconverter.py
Traceback (most recent call last):
  File "/Users/admin/PycharmProjects/TSR37/coremlconverter.py",line 9,in <module>
    class_labels=output_labels,image_input_names='image')
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/coremltools/converters/keras/_keras_converter.py",line 830,in convert
    use_float_arraytype=use_float_arraytype,File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/coremltools/converters/keras/_keras_converter.py",line 607,in _convert_to_spec
    use_float_arraytype=use_float_arraytype,File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/coremltools/converters/keras/_keras2_converter.py",line 353,in _convert
    model = _keras.models.load_model(model,custom_objects=custom_objects)
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/engine/saving.py",line 419,in load_model
    model = _deserialize_model(f,custom_objects,compile)
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/engine/saving.py",line 299,in _deserialize_model
    custom_objects=custom_objects)
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/optimizers.py",line 768,in deserialize
    printable_module_name='optimizer')
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/utils/generic_utils.py",line 147,in deserialize_keras_object
    return cls.from_config(config['config'])
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/optimizers.py",line 154,in from_config
    return cls(**config)
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/optimizers.py",line 460,in __init__
    super(Adam,self).__init__(**kwargs)
  File "/Users/admin/PycharmProjects/TSR37/venv/lib/python3.7/site-packages/keras/optimizers.py",line 79,in __init__
    'passed to optimizer: ' + str(k))
TypeError: Unexpected keyword argument passed to optimizer: learning_rate

Process finished with exit code 1

这是为什么，如何使它起作用？ 我尝试更新keras和/或tensorflow，但coremltools似乎仅适用于keras 2.2.4和tensorflow 1.15.0

解决方法

这可以通过在创建模型的环境中使用相同版本的keras和tensorflow来解决，并通过转换模型的环境来解决。

coremltoolskeraskeraspythontensorflowtensorflowtensorflow