head_config.json

{
  "config": {
    "activation_function": "tanh",
    "head_type": "tagging",
    "label2id": {
      "B-LOC": 1,
      "B-MISC": 7,
      "B-ORG": 5,
      "B-PER": 3,
      "I-LOC": 2,
      "I-MISC": 8,
      "I-ORG": 6,
      "I-PER": 4,
      "O": 0
    },
    "layers": 1,
    "num_labels": 9
  },
  "hidden_size": 768,
  "model_class": "BertModelWithHeads",
  "model_name": "bert-base-uncased",
  "model_type": "bert",
  "name": "ner_head"
}