[{'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 catboost import CatBoostClassifier\n\ncatboost_clf = CatBoostClassifier(loss_function='Logloss', iterations=500, depth=6, l2_leaf_reg=1, \n                                  cat_features=list(range(X_cb_train_transformed.shape[1])), \n                                  eval_metric='AUC', random_state=42, verbose=0)\ncatboost_clf.fit(X_cb_train_transformed, y_train)"}, {'role': 'assistant', 'content': 'modelling'}]