[{'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:for i in range(6):\n  print("Epoch", i + 1)\n  total_epoch += 1\n  train_epoch(resolver, optimizer, train_dl)\n  loss, labels = evaluate(resolver, optimizer, valid_dl)\n  if loss < best_loss:\n    best_loss = loss\n    print(f"Loss improved, saving {total_epoch}")\n    torch.save(resolver.state_dict(), data_path/"model_best.pt")'}, {'role': 'assistant', 'content': 'modelling'}]