def _upper_layer_width(self, u):
for v, layer_id in self.reverse_adj_list[u]:
layer = self.layer_list[layer_id]
if is_layer(layer, "Conv") or is_layer(layer, "Dense"):
return layer_width(layer)
elif is_layer(layer, "Concatenate"):
a = self.layer_id_to_input_node_ids[layer_id][0]
b = self.layer_id_to_input_node_ids[layer_id][1]
return self._upper_layer_width(a) + self._upper_layer_width(b)
else:
return self._upper_layer_width(v)
return self.node_list[0].shape[-1]
def to_wider_model(self, pre_layer_id, n_add):
"""Widen the last dimension of the output of the pre_layer.
Args:
pre_layer_id: The ID of a convolutional layer or dense layer.
n_add: The number of dimensions to add.
"""
self.operation_history.append(("to_wider_model", pre_layer_id, n_add))
pre_layer = self.layer_list[pre_layer_id]
output_id = self.layer_id_to_output_node_ids[pre_layer_id][0]
dim = layer_width(pre_layer)
self.vis = {}
self._search(output_id, dim, dim, n_add)
# Update the tensor shapes.
for u in self.topological_order:
for v, layer_id in self.adj_list[u]:
self.node_list[v].shape = self.layer_list[layer_id].output_shape