[{'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:\nhistory = model.fit(train_generator, \n                    steps_per_epoch=(train_size//batch_size),\n                    epochs= 5,\n                    validation_data=validation_generator,\n                   validation_steps=(validation_size//batch_size)\n                   )'}, {'role': 'assistant', 'content': 'modelling'}]