The

conf/base/parameters/data_science.yml

is indeed populated with:

model_options:
  test_size: 0.2
  random_state: 3
  features:
    - engines
    - passenger_capacity
    - crew
    - d_check_complete
    - moon_clearance_complete
    - iata_approved
    - company_rating
    - review_scores_rating

model_options_experimental:
  test_size: 0.2
  random_state: 8
  features:
    - engines
    - passenger_capacity
    - crew
    - review_scores_rating

I thought you were referring to the

conf/base/parameters.yml

, which is empty