[{'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:# train model to predict fatalities/day\n# params\nSEED = 42\nparams = {'num_leaves': 8,\n          'min_data_in_leaf': 5,  # 42,\n          'objective': 'regression',\n          'max_depth': 8,\n          'learning_rate': 0.02,\n          'boosting': 'gbdt',\n          'bagging_freq': 5,  # 5\n          'bagging_fraction': 0.8,  # 0.5,\n          'feature_fraction': 0.8201,\n          'bagging_seed': SEED,\n          'reg_alpha': 1,  # 1.728910519108444,\n          'reg_lambda': 4.9847051755586085,\n          'random_state': SEED,\n          'metric': 'mse',\n          'verbosity': 100,\n          'min_gain_to_split': 0.02,  # 0.01077313523861969,\n          'min_child_weight': 5,  # 19.428902804238373,\n          'num_threads': 6,\n          }\n"}, {'role': 'assistant', 'content': 'modelling'}]