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dd14c26 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | import OAI.Probability.MatroidProphet.Main
namespace OAI
/-! Concrete sacrificed-mask data for the secretary transport.
The branch and every mask coordinate are functions of the complete source seed.
The test mask is deliberately not part of the sacrificed mask.
-/
namespace MatroidProphet.Secretary
/-- The observation mask of the concrete source rule, before any values are seen. -/
noncomputable def sourceMask {n : ℕ} (r : Seed (mainSeedBits n)) : Finset (Fin n) :=
if mainBranch r then
(mainMasks r).H ∪ (mainMasks r).D ∪ (mainMasks r).C
else (mainMasks r).H
/-- Literal branchwise Bernoulli rates from `sections/secretary.tex`.
`false` is the maximum branch and `true` is the main branch. -/
noncomputable def branchRate (j : Bool) : ℝ :=
if j then 5 / 8 + 3 * ((2 : ℝ) ^ 143)⁻¹ else 1 / 2
end MatroidProphet.Secretary
end OAI
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