How to enable curiosity?

This change to the docs says we now enable curiosity by "adding the 'curiosity' reward signal" to our config yaml file.

But *where* do we add it!? The example trainer_config.yaml has this reward_signals section in it:

Code (CSharp):

1.     reward_signals:
2.         extrinsic:
3.             strength: 1.0
4.             gamma: 0.99
5.  

Do we add a new property called "intrinsic" with a property called "curiosity" under that, with a value of true?

 

I blindly did what some random dude on the internet was doing and arrived at this:

Code (CSharp):

1.     reward_signals:
2.         extrinsic:
3.             strength: 1.0
4.             gamma: 0.99
5.         curiosity:
6.             strength: 0.2
7.             gamma: 0.99
8.             encoding_size: 512
9.  

No idea what gamma or encoding_size do yet. Is this my best place to start understanding those?

 

> Is this my best place to start understanding those?
yes