code: def __init__(self, loss="DINOLoss", eval_idx=-1):
      super(DINOHead, self).__init__()
      self.loss = loss
      self.eval_idx = eval_idx
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from ppdet.core.workspace import register
  import pycocotools.mask
  from ..initializer import linear_init_, constant_
  from ..transformers.utils import inverse_sigmoid
label_desc: Use image node_id 1 to create a new DINOHead object from inherited base classes: nn with example: obj = DINOHead(loss, eval_idx)