head_config.json

{
  "config": {
    "activation_function": "tanh",
    "head_type": "multiple_choice",
    "label2id": {
      "": 0,
      "A": 1,
      "B": 2,
      "C": 3,
      "D": 4,
      "E": 5
    },
    "layers": 2,
    "num_choices": 5,
    "use_pooler": false
  },
  "hidden_size": 768,
  "model_class": "RobertaModelWithHeads",
  "model_name": "roberta-base",
  "model_type": "roberta",
  "name": "commonsense_qa"
}