[{'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:def graph(x, y, xlabel="X", ylabel="Y", title="X vs Y"):\nplt.plot(x, y)\nplt.title(title)\nplt.xlabel(xlabel)\nplt.ylabel(ylabel)\nplt.show()\ndef graph_error(error_history):\niterations = [i for i in range(1,len(error_history)+1)]\nplt.plot(iterations, error_history)\nplt.title(\'Error Rate\')\nplt.xlabel(\'Training Iterations\')\nplt.ylabel(\'Mean Squared Error\')\nplt.show()'}, {'role': 'assistant', 'content': 'result_visualization'}]