[{'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:from keras import optimizers\nbase_model = pretrained_model_1 # Topless\n\nadd_model = Sequential()\nadd_model.add(Flatten(input_shape=base_model.output_shape[1:]))\nadd_model.add(Dense(256, activation='relu'))\nadd_model.add(Dense(num_classes, activation='softmax'))\n\nmodel = Model(inputs=base_model.input, outputs=add_model(base_model.output))\nmodel.compile(loss='categorical_crossentropy', optimizer=optimizers.SGD(lr=1e-4, momentum=0.9),\n              metrics=['accuracy'])\n\nmodel.summary()"}, {'role': 'assistant', 'content': 'modelling'}]