[{'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:from sklearn.model_selection import GridSearchCV\nparams={'max_depth':list(range(5,20))}\nbase_model=DecisionTreeRegressor()\ncv_model=GridSearchCV(base_model,param_grid=params,return_train_score=True).fit(X_train,y_train)"}, {'role': 'assistant', 'content': "['modelling']"}]