[{'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:# instanciar o modelo\nrf = RandomForestRegressor(random_state=42,n_jobs=-1)\n#n_jobs nr de job que rodam e paralalo para dar o fit. -1  #para usar todos os processadores\n#n_estimator  - nro de arvores. o defalt  10 mas mudar para 100 na proxima verso 0.22\n'"}, {'role': 'assistant', 'content': 'modelling'}]