code: def __init__(self, full_graph, ntype):
      super().__init__()
  
      n_nodes = full_graph.num_nodes(ntype)
      self.bias = nn.Parameter(torch.zeros(n_nodes, 1))
  
imports: import dgl
  import dgl.function
  import dgl.nn.pytorch
  import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 1 to create a new ItemToItemScorer object from inherited base classes: nn with example: obj = ItemToItemScorer(full_graph, ntype)