class_docstr: Specific head for training DINO (https://arxiv.org/abs/2104.14294).
  
  Adapted from the official DINO code base to fit in VISSL:
  https://github.com/facebookresearch/dino/blob/main/vision_transformer.py
class_docstr_tok: ["Specific","head","for","training","DINO","(","https",":","\/\/arxiv.org\/abs\/2104.14294",")",".","Adapted","from","the","official","DINO","code","base","to","fit","in","VISSL",":","https",":","\/\/github.com\/facebookresearch\/dino\/blob\/main\/vision_transformer.py"]
code: def forward(self, x):
      x = self.mlp(x)
      x = nn.functional.normalize(x, dim=-1, p=2)
      x = self.prototypes0(x)
      return [x]
  
file_path: vissl/vissl/models/heads/dino_head.py
imports: from typing import List, Optional
  import torch
  import torch.nn
  import torch.nn.functional
  from torch.nn.utils.weight_norm import WeightNorm
  from vissl.config import AttrDict
  from vissl.models.heads import register_model_head
  from vissl.models.model_helpers import trunc_normal_
  from vissl.utils.fsdp_utils import fsdp_wrapper
label_desc: Use image node_id 3 for calling the DINOHead obj's underlying member method code with example usage: obj.forward(x) and returns: list