code: def __init__(self, num_relations, hidden_channels):
      super().__init__()
      self.rel_emb = Parameter(
          torch.empty(num_relations, hidden_channels)
      )
      self.reset_parameters()
  
imports: import os.path
  import time
  import torch
  import torch.nn.functional
  from torch.nn import Parameter
  from tqdm import tqdm
  from torch_geometric.datasets import RelLinkPredDataset
  from torch_geometric.nn import GAE, RGCNConv
label_desc: Use image node_id 1 to create a new DistMultDecoder object from inherited base classes: torch.nn with example: obj = DistMultDecoder(num_relations, hidden_channels)