class_docstr: Mean Aggregator for graphsage
class_docstr_tok: ["Mean","Aggregator","for","graphsage"]
code: def aggre(self, neighbour):
      mean_neighbour = torch.mean(neighbour, dim=1)
      return mean_neighbour
  
imports: import torch
  import torch.nn
  import torch.nn.functional
label_desc: Use image node_id 2 for calling the MeanAggregator obj's underlying member method code with example usage: obj.aggre(neighbour) and returns: mean_neighbour