[{'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:# Registering custom activations suitable for tabular problems\n\nfrom tensorflow.keras.utils import get_custom_objects\nfrom tensorflow.keras.layers import Activation, LeakyReLU\nfrom deep_learning_for_tabular_data.tabular import gelu, Mish, mish\n\n# Add gelu so we can use it as a string\nget_custom_objects().update({'gelu': Activation(gelu)})\n\n# Add mish so we can use it as a string\nget_custom_objects().update({'mish': Mish(mish)})\n\n# Add leaky-relu so we can use it as a string\nget_custom_objects().update({'leaky-relu': Activation(LeakyReLU(alpha=0.2))})"}, {'role': 'assistant', 'content': 'helper_functions'}]