[{'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:from menpofit.aam import HolisticAAM\nfrom menpo.feature import fast_dsift\nfrom menpowidgets import visualize_aam\naam_path = Path('data/deformable/catface-holistic-aam-dsift.pkl')\nif aam_path.exists():\naam = mio.import_pickle(aam_path)\nelse:\naam = HolisticAAM(train_images,\nreference_shape=None,\ndiagonal=150, scales=(0.5, 1.0),\nholistic_features=fast_dsift,\nbatch_size=256,\nverbose=True)\nmio.export_pickle(aam, aam_path)"}, {'role': 'assistant', 'content': 'modelling'}]