[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify code snippets into one of the following categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']."}, {'role': 'user', 'content': 'Identify the single most appropriate category to which the provided code belongs. Provide your response as a single category label without any additional information, commentary, or personal opinions.\\nPython Code:pos = 0\nneg = 0\ncolors_list = list()\nvectors_list = list()\nfor word in words_to_visualize:\nif word in pos_neg_ratios.keys():\nvectors_list.append(mlp_full.weights_0_1[mlp_full.word2index[word]])\nif(pos_neg_ratios[word] > 0):\npos+=1\ncolors_list.append("#00ff00")\nelse:\nneg+=1\ncolors_list.append("#000000")'}, {'role': 'assistant', 'content': 'data_exploration'}]