[{'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:preds_train_merge_count = preds_train_re + preds_train_ca\npreds_valid_merge_count = preds_valid_re + preds_valid_ca\nrmsle_merge_train = sqrt(mean_squared_log_error(y_train,preds_train_merge_count))\nrmsle_merge_valid = sqrt(mean_squared_log_error(y_valid,preds_valid_merge_count))\n\nprint('(merge) Count train rmsle : %.5f, valid rmsle : %.5f'%(rmsle_merge_train,\n                                                              rmsle_merge_valid))"}, {'role': 'assistant', 'content': 'data_preprocessing'}]