Function tuned_pbt 

pub fn tuned_pbt() -> Result<Pbt>

Builds the tuned PBT scheduler the oracle uses over ScheduleProblem.

Ranks every segment interval (interval = 1); a wide exploit fraction so the population deepens through the schedule, an explore that perturbs by the factor-of-two step ScheduleProblem::shift is matched to.

Errors

Error::InvalidSpace never (the interval is non-zero).