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我正在使用hyperas模块来调整我的Keras模型并返回错误:

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe8 in position 4785: ordinal not in range(128)

调用地点发生错误,语法为trials

if __name__ == '__main__':
    best_run, best_model = optim.minimize(model=create_model,
                                      data=data,
                                      algo=tpe.suggest,
                                      max_evals=20,
                                      trials=Trials())

我认为问题的根源是由于我加载的 numpy .npy 文件是ascii编码格式数据。那么,如何将ascii格式更改为utf-8格式?

我通过添加看到了一些这样的解决方案,encoding='latin1'但它不起作用。

label =np.load(os.getcwd()+'/Simu_Sample_label_1000.npy',encoding="latin1")
sample=np.load(os.getcwd()+'/Training_Sample_1000.npy',encoding="latin1")

在此处添加我的整个回溯:

    In [3]: %run 1dCNN.py
---------------------------------------------------------------------------
UnicodeDecodeError                        Traceback (most recent call last)
~/subg_ps/cnn_train/1dCNN.py in <module>()
    127                                           algo=tpe.suggest,
    128                                           max_evals=20,
--> 129                                           trials=Trials())
    130     trX, trY, teX, teY = data()
    131     print("Evalutation of best performing model:")

~/anaconda3/lib/python3.6/site-packages/hyperas/optim.py in minimize(model, data, algo, max_evals, trials, functions, rseed, notebook_name, verbose, eval_space, return_space, keep_temp)
     67                                      notebook_name=notebook_name,
     68                                      verbose=verbose,
---> 69                                      keep_temp=keep_temp)
     70
     71     best_model = None

~/anaconda3/lib/python3.6/site-packages/hyperas/optim.py in base_minimizer(model, data, functions, algo, max_evals, trials, rseed, full_model_string, notebook_name, verbose, stack, keep_temp)
     96         model_str = full_model_string
     97     else:
---> 98         model_str = get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
     99     temp_file = './temp_model.py'
    100     write_temp_files(model_str, temp_file)

~/anaconda3/lib/python3.6/site-packages/hyperas/optim.py in get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
    184         calling_script_file = os.path.abspath(inspect.stack()[stack][1])
    185         with open(calling_script_file, 'r') as f:
--> 186             source = f.read()
    187
    188     cleaned_source = remove_all_comments(source)

~/anaconda3/lib/python3.6/encodings/ascii.py in decode(self, input, final)
     24 class IncrementalDecoder(codecs.IncrementalDecoder):
     25     def decode(self, input, final=False):
---> 26         return codecs.ascii_decode(input, self.errors)[0]
     27
     28 class StreamWriter(Codec,codecs.StreamWriter):

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe8 in position 4785: ordinal not in range(128)

我想我最好把所有的traceback放在这里,所有的代码如下: https ://github.com/MinghaoDu1994/MyPythonFunctions/blob/master/1Dcnn

我认为问题是由于 中的功能Trialshyperopt但我没有找到像我这样的相关问题。

4

2 回答 2

1

问题已解决。调用optim.minimize函数时,首先要定义两个函数,分别命名为dataand model,而不是我命名的create_model或者其他的。这是一个非常严格的限制。

于 2019-03-21T06:06:55.510 回答
0

我可以通过将 unicode 字符串(PY3 默认)转换为字节字符串来重新创建您的错误,然后尝试decode它:

In [347]: astr = 'abc'+chr(0xe8)+'xyz'                                                    
In [348]: astr                                                                            
Out[348]: 'abcèxyz'
In [349]: astr.encode('latin1')                                                           
Out[349]: b'abc\xe8xyz'
In [350]: astr.encode('latin1').decode('ascii')                                           
---------------------------------------------------------------------------
UnicodeDecodeError                        Traceback (most recent call last)
<ipython-input-350-1825a76f5d5b> in <module>
----> 1 astr.encode('latin1').decode('ascii')

UnicodeDecodeError: 'ascii' codec can't decode byte 0xe8 in position 3: ordinal not in range(128)

hyperas读取某种脚本文件get_hyperopt_model_string()。我不知道是什么变量控制了这个读取,也许是notebook. 我认为您从npy文件加载的数组与此问题无关。它正在解码一个大字符串(位置 4785),而不是数组的某个元素。

简而言之,这是一个hyperas模型问题,而不是npy文件问题。

于 2019-03-20T02:22:52.587 回答