[{'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:d = 8\nn = 100\n        \nboost = AdaBoostRegressor(DecisionTreeRegressor(max_depth=d),\n                          n_estimators=n)        \nboost.fit(Xtrain3, Ytrain)\n\nYpred = boost.predict(Xtrain3)\n\nboost_rmsle = rmsle(Ytrain, Ypred)\n\nprint('error =', boost_rmsle)"}, {'role': 'assistant', 'content': 'modelling'}]