Group optimizer options
Created by: scarlehoff
This is a small change that not only makes the runcard more readable, it also facilitates having different options for different optimizers in the hyperparameter scan.
The idea is that now the runcard is written as:
optimizer:
optimizer_name: 'RMSprop'
learning_rate: 0.01
clipnorm: 1.0
I have also exposed clipnorm
as an option (which was until now set to always 1.0).
Documentation for this, again, is in #767