[{'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:true_coin_bias = 0.5 # The (unknown) bias of the coin\nnum_flips = 100\ndata = np.random.choice([0, 1], p=[1-true_coin_bias, true_coin_bias], size=num_flips)\np = pm.Uniform("p", lower=0, upper=1)\nobservations = pm.Bernoulli("obs", p=p, value=data, observed=True)\nmodel = pm.Model([p, observations])'}, {'role': 'assistant', 'content': 'modelling'}]