code: def forward(self, h_src, h_dst):
      h = h_src * h_dst
      h = self.linear(h)
      h = torch.sigmoid(h)
      return h
  
imports: import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the DotPredictor obj's underlying member method code with example usage: obj.forward(h_src, h_dst) and returns: h