feat: Branch and bound optimizations in schedule enumeration#50
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codyroux merged 3 commits intocodyroux:chamelean/mainfrom Dec 1, 2025
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| private partial def enumSchedulesChunkedWithPruning {α v} [BEq v] [Repr α] [Repr v] [Hashable v] (vars : List v) (matchableVars : List v) (hypComps : List (LazyList (List (α × List (List v) × List v)))) (env : List v) (numHyps : Nat) | ||
| : LazyList (List (PreScheduleStep α v)) := | ||
| let matchableSet := Std.HashSet.ofList matchableVars | ||
| let rec go (hypComps : List (LazyList (List (α × List (List v) × List v)))) (env : List v) (sched : List (PreScheduleStep α v)) (numHypsRemaining : Nat) (bestScore : PreScheduleScore) |
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This is 2 nested (and somewhat non-trivial) recursive functions, I wonder if we want a little more comments explaining what's going on.
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Branch and bound optimization prunes swaths of bad schedules as soon as their
PreScheduleScoreexceeds the best found (we are minimizing).