[{'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:#vamos prever com base nos dados de treino\n# como o modelo se comporta prevendo em cima de dados conhecidos\n# o modelo ja esta treinado\n\ntreino_preds = rf.predict(treino[usadas])\n\nmean_squared_error(treino['count'], treino_preds) ** (1/2)"}, {'role': 'assistant', 'content': 'evaluation'}]