class_docstr: Shared RNN model.
class_docstr_tok: ["Shared","RNN","model","."]
code: def init_hidden(self, batch_size):
      zeros = torch.zeros(batch_size, self.args.shared_hid)
      return utils.get_variable(
          zeros, self.args.cuda, requires_grad=False
      )
  
imports: import numpy
  import collections
  import torch
  from torch import nn
  import torch.nn.functional
  from torch.autograd import Variable
  import models.shared_base
  import utils
label_desc: Use image node_id 4 for calling the RNN obj's underlying member method code with example usage: obj.init_hidden(batch_size) and returns: utils