/tf-graph-tricks

Tensorflow Graph Inspection Tricks

Often you want to hook into an existing model. Here are some tricks for finding tensors that you care about

Find all the input tensors to target_node

target_node = graph.get_tensor_by_name("predictions:0")

target_node.op.inputs

Find all the output tensors of target_node

target_node = graph.get_tensor_by_name("predictions:0")

[output for op in target_node.consumers() for output in op.outputs]

Find all the tensors that have a certain shape

target_shape = (None, 32, 32, 3)

def shape_tuple(tensor):
  return tuple(map(lambda i: i.value, tensor.get_shape()))
  
tensors = tf.contrib.graph_editor.get_tensors(graph)
[t for t in tensors if shape_tuple(t) == target_shape]

Find all the tensors with target_name as a substring

target_name = 'logit'

tensors = tf.contrib.graph_editor.get_tensors(graph)
[t for t in tensors if target_name in t.name]