[{'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:corr = training_set.corr()\nfig, ax = plt.subplots(figsize=(30, 30))\nax.matshow(corr)\n\nfor (i, j), z in np.ndenumerate(corr):\n    ax.text(j, i, '{:0.1f}'.format(z), ha='center', va='center',\n            bbox=dict(boxstyle='round', facecolor='white', edgecolor='0.3'))\n\nplt.xticks(range(len(corr.columns)), corr.columns);\nplt.yticks(range(len(corr.columns)), corr.columns);"}, {'role': 'assistant', 'content': 'result_visualization'}]