Index out of range.

I am trying to implement this for my predictive neural network but it returns the following error:

---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-21-66686af6d687> in <module>()
      5                                           max_evals=5,
      6                                           notebook_name='gridsearch',
----> 7                                           trials=Trials())
      8     x_train, y_train, x_val, y_val = data()
      9     print("Evalutation of best performing model:")

~/anaconda3/envs/poc/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)
     65                                      full_model_string=None,
     66                                      notebook_name=notebook_name,
---> 67                                      verbose=verbose)
     68 
     69     best_model = None

~/anaconda3/envs/poc/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)
     94         model_str = full_model_string
     95     else:
---> 96         model_str = get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
     97     temp_file = './temp_model.py'
     98     write_temp_files(model_str, temp_file)

~/anaconda3/envs/poc/lib/python3.6/site-packages/hyperas/optim.py in get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
    182     imports = extract_imports(cleaned_source, verbose)
    183 
--> 184     parts = hyperparameter_names(model_string)
    185     aug_parts = augmented_names(parts)
    186 

~/anaconda3/envs/poc/lib/python3.6/site-packages/hyperas/optim.py in hyperparameter_names(model_string)
    249             parts.append(name[0])
    250         else:
--> 251             parts.append(parts[-1])
    252     part_dict = {}
    253     for i, part in enumerate(parts):

IndexError: list index out of range

The code used can be found: <script src="https://gist.github.com/GijsVermarien/105a15bc47ff970af5679f4e73d030ee.js"></script>

Id be glad to provide more information if needed.

[GijsVermarien]

I have eliminated all the parameters and dumbed it down to just varying the layer size, depth, learning rate and early stopping. Yet it still doesn’t seem to work. See the code attached in this gist: https://gist.github.com/GijsVermarien/c544ab23b9aaffad13c7f4283cff3e8d The error given is still:

---------------------------------------------------------------------------
IndexError                                Traceback (most recent call last)
<ipython-input-5-66686af6d687> in <module>()
      5                                           max_evals=5,
      6                                           notebook_name='gridsearch',
----> 7                                           trials=Trials())
      8     x_train, y_train, x_val, y_val = data()
      9     print("Evalutation of best performing model:")

~/anaconda3/envs/poc/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)
     65                                      full_model_string=None,
     66                                      notebook_name=notebook_name,
---> 67                                      verbose=verbose)
     68 
     69     best_model = None

~/anaconda3/envs/poc/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)
     94         model_str = full_model_string
     95     else:
---> 96         model_str = get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
     97     temp_file = './temp_model.py'
     98     write_temp_files(model_str, temp_file)

~/anaconda3/envs/poc/lib/python3.6/site-packages/hyperas/optim.py in get_hyperopt_model_string(model, data, functions, notebook_name, verbose, stack)
    182     imports = extract_imports(cleaned_source, verbose)
    183 
--> 184     parts = hyperparameter_names(model_string)
    185     aug_parts = augmented_names(parts)
    186 

~/anaconda3/envs/poc/lib/python3.6/site-packages/hyperas/optim.py in hyperparameter_names(model_string)
    249             parts.append(name[0])
    250         else:
--> 251             parts.append(parts[-1])
    252     part_dict = {}
    253     for i, part in enumerate(parts):

IndexError: list index out of range

[JonnoFTW]

My fix for this error was to simply move my parameters into an assigned variable. So replace code like this:

args = {
    'x': {{uniform(0,1)}}
}

With this:

x = {{uniform(0,1)}}
args = {
    'x': x
}