hpo.fedex.eta0:
type: cate
choices: [-1.0, 0.001, 0.005, 0.01, 0.05, 0.1, 0.5, 1.0]
hpo.fedex.gamma:
type: float
lower: 0.0
upper: 1.0
log: False
hpo.fedex.diff:
choices: [True, False]