Reference · The Applied Higher-Order Functions catalogue
rainbow.algorithms.proofs.ahof.dec-pomdp-hs
AHoF D83 Dec-POMDP Heuristic Search: search the space of joint policies with heuristic bounds; converged when the bound gap is within precision: converged? gap epsilon = decide (gap <= epsilon). Proved native and axiom-free (decision, two positive instances, at-most certificate, negative instance). Requires audit/decide-nnrat-at-most, nnrat/at-most, nnrat/decide-at-most-true-sound (all in the D63 checkpoint). Scope (measured by the kernel): this module has 4 worked instances (statements about specific values). None of its theorems is a guarantee about the algorithm for all inputs; `lein verify rainbow.algorithms.proofs.ahof.dec-pomdp-hs` prints this classification.
dec-hs/converged?
dec-hs/converged? : (x₁ x₂ : ℚ≥0) → data/Bool
ℚ≥0 = nnrat/NonnegativeRational
dec-hs/small-gap-converged
dec-hs/small-gap-converged : → ce-is/elite? 1/4 1/2 = data/true
= = equality/Eq
dec-hs/boundary-converged
dec-hs/boundary-converged : → ce-is/elite? 1/2 1/2 = data/true
= = equality/Eq
dec-hs/gap-certificate
dec-hs/gap-certificate : → 1/4 ≤ 1/2
≤ = nnrat/at-most
dec-hs/large-gap-unconverged
dec-hs/large-gap-unconverged : → ce-is/elite? 3/4 1/2 = data/false
= = equality/Eq