[{'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:import keras as k\nimport numpy as np\nimport pandas as pd\nfrom keras.layers import GRU, Dense, Activation, Embedding, Input, Dropout, LSTM\nfrom keras.layers import Conv1D, MaxPooling1D, Flatten, GlobalMaxPooling1D, BatchNormalization\nfrom keras.models import Sequential\nfrom keras.preprocessing.sequence import pad_sequences\nfrom keras.preprocessing.text import Tokenizer, one_hot\nfrom keras.utils import np_utils\nfrom keras.callbacks import EarlyStopping\nimport tensorflow as tf'}, {'role': 'assistant', 'content': 'helper_functions'}]