[{'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 keras import backend, models, layers, initializers, regularizers, constraints, optimizers\nfrom keras import callbacks as kc\nfrom keras import optimizers as ko\n\nfrom sklearn.model_selection import cross_val_score, KFold, train_test_split\nfrom sklearn.metrics import log_loss\nimport time\n\n\ndense_layer_sizes = [37]\ndropout_rate = 0.6\nlearning_rate = 0.001\nn_fold = 5\nbatch_size = 32\nepochs = 1000\npatience = 100\n# n_test = 100\nlambd = 0.1 # L2 regularization'}, {'role': 'assistant', 'content': 'modelling'}]