Importing Tensorflow
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Currently SameDiff supports the import of TensorFlow frozen graphs through the various SameDiff.importFrozenTF methods. TensorFlow documentation on frozen models can be found .
After you import the TensorFlow model there are 2 ways to find the inputs and outputs. The first method is to look at the output of
Where the input variables are the output of no ops, and the output variables are the input of no ops. Another way to find the inputs is
To run inference use:
For multiple outputs, use exec() instead of execSingle(), to return a Map<String,INDArray> of outputs instead. Alternatively, you can use methods such as SameDiff.output(Map<String, INDArray> placeholders, String... outputs) to get the same output.
SameDiff’s TensorFlow import is still being developed, and does not yet have support for every single operation and datatype in TensorFlow. Almost all of the common/standard operations are importable and tested, however - including almost everything in the tf, tf.math, tf.layers, tf.losses, tf.bitwise and tf.nn namespaces. The majority of existing pretrained models out there should be importable into SameDiff.
We have a TensorFlow graph analyzing utility which will report any missing operations (operations that still need to be implemented)
It is possible to remove nodes from the network. For example TensorFlow 1.x models can have hard coded dropout layers. See the for an example.
If you run into an operation that can’t be imported, feel free to .