A Appendix

A.1 T ensorFlow Primitives V ocabulary Name TF Function Argument Mapping Input 1 Input 2 Constant Dim Size ADD tf.math.add "Name" is the name of the operation in our search "TF Function" is the TensorFlow function that the name is mapped to when a DNA instruction "Argument Mapping" describes how the values in a DNA's argument set are mapped to the corresponding TensorFlow function arguments. TensorFlow graphs are built from DNA programs as described in Section 2 of the main text. The vocabulary for these relative dimensions is [1, 2, 4, 8, 12, 16, 24, 32, 48, 64]. This vocabulary was not tuned.