config.json

{
  "model_type":"bert",
  "vocab_size": 21128,
  "hidden_size": 128, 
  "intermediate_size": 512,
  "num_hidden_layers": 2, 
  "max_position_embeddings": 512, 
  "num_attention_heads": 2, 
  "type_vocab_size": 2 
}