Added docstrings

model/pytorch/dcrnn_cell.py

@@ -67,6 +67,7 @@ class DCGRUCell(torch.nn.Module):
             supports.append(utils.calculate_scaled_laplacian(adj_mx))
         for support in supports:
             self._supports.append(self._build_sparse_matrix(support))
+
         self._fc_params = LayerParams(self, 'fc')
         self._gconv_params = LayerParams(self, 'gconv')
 
@@ -81,12 +82,11 @@ class DCGRUCell(torch.nn.Module):
 
     def forward(self, inputs, hx):
         """Gated recurrent unit (GRU) with Graph Convolution.
-        :param input: (B, num_nodes * input_dim)
+        :param inputs: (B, num_nodes * input_dim)
+        :param hx: (B, num_nodes * rnn_units)
 
         :return
-        - Output: A `2-D` tensor with shape `[batch_size x self.output_size]`.
-        - New state: Either a single `2-D` tensor, or a tuple of tensors matching
-            the arity and shapes of `state`
+        - Output: A `2-D` tensor with shape `(B, num_nodes * rnn_units)`.
         """
         output_size = 2 * self._num_units
         if self._use_gc_for_ru:
@@ -124,14 +124,6 @@ class DCGRUCell(torch.nn.Module):
         return value
 
     def _gconv(self, inputs, state, output_size, bias_start=0.0):
-        """Graph convolution between input and the graph matrix.
-
-        :param args: a 2D Tensor or a list of 2D, batch x n, Tensors.
-        :param output_size:
-        :param bias:
-        :param bias_start:
-        :return:
-        """
         # Reshape input and state to (batch_size, num_nodes, input_dim/state_dim)
         batch_size = inputs.shape[0]
         inputs = torch.reshape(inputs, (batch_size, self._num_nodes, -1))