[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify the code snippets into categories from the provided list of categories. List of categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']"}, {'role': 'user', 'content': "Identify to which category the provided code belongs and assign the code snippet to at least 1 but up to 5 categories based on the probabilities, ignore if the probability of the category is negligible. Strictly provide your response as a list. Avoid providing any additional information, commentary, or personal opinions.\\nPython Code:n_smoothing = [1,5,10,15,20,50,100]\nres = [score(train,['brand','model'],[s,s],[.5,.5]) for s in n_smoothing]\nplt.plot(n_smoothing, res)\nplt.title('Best score {:.5f} at n_smoothing = {}'.format(np.min(res),n_smoothing[np.argmin(res)]))\nplt.xlabel('n_smoothing')"}, {'role': 'assistant', 'content': "['result_visualization']"}]