[{'role': 'system', 'content': "You are an expert in machine learning and your task is to classify the code snippets into categories from the provided list of categories. List of categories: ['helper_functions', 'load_data', 'data_exploration', 'data_preprocessing', 'evaluation', 'modelling', 'prediction', 'result_visualization', 'save_results', 'comment_only']"}, {'role': 'user', 'content': 'Identify to which category the provided code belongs and assign the code snippet to at least 1 but up to 5 categories based on the probabilities, ignore if the probability of the category is negligible. Strictly provide your response as a list. Avoid providing any additional information, commentary, or personal opinions.\\nPython Code:%%time\nparams = {\n        "objective" : "regression", \n        "metric" : "mae", \n        "num_leaves" : 60, \n        "learning_rate" : 0.01, \n        "bagging_fraction" : 0.9,\n        "bagging_seed" : 0, \n        "num_threads" : 4,\n        "colsample_bytree" : 0.5, \n        \'lambda_l2\':9\n}\n\nmodel = lgb.train(  params, \n                    train_set = train_set,\n                    num_boost_round=10000,\n                    early_stopping_rounds=200,\n                    verbose_eval=100, \n                    valid_sets=[train_set,val_set]\n                  )\n\n\''}, {'role': 'assistant', 'content': "['modelling']"}]