axis 3 ยท oracle ยท operational
Is this ONE well-defined algorithm โ would two honest implementations agree? Terry msg 428, verbatim: "algorithm-invariant. Two correct implementations of the same feature should converge to the same answer."
| test | question | demo result |
|---|---|---|
| A โ no-dispatch (static) | Does the code switch estimator on a data condition? | FAIL on if lenโฅ500: app else perm ยท PASS on clean feature |
| B โ convergence oracle | Do two independent implementations agree to ~1e-9? | PASS hjorth (ฮ 6.9e-18) ยท petrosian (ฮ 0.0) ยท FAIL unpinned embedding (ฮ 3.3%) |
| C โ doc/code consistency | Does the declared algorithm match the implemented one? | FAIL declared DFA vs implemented R/S (the real lookback_hurst case) |
if nโฅ500 example fails both, by design.A dispatch/divergence FAIL is conclusive. But a full PASS needs a second independent reference implementation registered per candidate โ until then the axis reports PENDING, never a faked pass. Registering reference impls is the open work item.
Deep dive: AXIS-3-AGNOSTIC.md