Vanillix raises KeyError on BETA, when not present in YAML config

[ralf-koenig]

When running a Vanillix model with a YAML file, that does not specify a BETA (which is not needed for Vanillix), AutoEncodix fails with an Key error message, looking for cfg["BETA"].

See example YAML file.
Command: make ml_task RUN_ID=RUN_007001 > RUN_ID_007001.log 2>RUN_ID_007001_errors.log

RUN_007001_config.yaml.txt

RUN_ID_007001.log

RUN_ID_007001_errors.log

Expected behaviour: as Vanillix does not need a BETA nor makes any use of it. Therefore, it must accept a YAML file that does not specify any.

This error can be generalized: all AE types (Vanillix, Varix, Ontix, Stackix, Cross-Modalix) should run with YAML files that only specify the parameters that they really need and do take into account, respectively.

[jan-forest]

Good catch. We never noticed since we just set BETA for all architecture although it is not affecting Vanillix's training.
We will make a fix.