[{'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:pipe_lr = Pipeline([('scl', StandardScaler()),\n('clf', LogisticRegression(penalty='l2', random_state=0))])\ntrain_sizes, train_scores, test_scores =\\\nlearning_curve(estimator=pipe_lr,\nX=X_train,\ny=y_train,\ntrain_sizes=np.linspace(0.1, 1.0, 10),\ncv=10, # =>k\nn_jobs=1)\ntrain_mean = np.mean(train_scores, axis=1)\ntrain_std = np.std(train_scores, axis=1)\ntest_mean = np.mean(test_scores, axis=1)\ntest_std = np.std(test_scores, axis=1)"}, {'role': 'assistant', 'content': 'modelling'}]