TensorFlow: argument evaluation

Specific Domains Machine Learning
1

In following Lyndon White’s example of TensorFlow at JuliaML and TensorFlow Tuitorial I was able to get it to run successfully after two changes:

  1. reduce_sum uses the now deprecated (and refused on my 1.4 dev TF) reduction_indices - changing this to axis worked fine
  2. “get_shape(Y_obs .* log(Y_pred))” was not able to evaluate the argument with message

ERROR: syntax: “.*(Y_obs,log(Y_pred))” is not a valid function argument name

However taking the argument and assigning it to a variable and then using the new variable name allowed it to work correctly. Just wondering what subtle change in Julia is responsible here.