Bruntwork · Eon Labs · opendeviationbar-py · 2026-06-09

Three-Axis Probe Formalization

Terry's feature-column discipline — orthogonal · parameterless · agnostic (msg id=428) — turned into three runnable probes + one promotion gate, with the agnostic axis re-anchored to Terry's verbatim source.

Headline correction. Terry's Agnostic axis means algorithm-invariant (two correct implementations converge), not asset-invariant. The cross-asset / multi-slice sweep that had drifted under the "agnostic" label is actually Terry's orthogonality substrate. Provenance →

The three axes

exists Orthogonal

Captures a dimension no other feature captures — empirically, on real bars.

probe: orthogonality_probe.py (+ ξ/CODEC cascade)

new Parameterless

No magic numbers, no tuned constants, no if n>=500 dispatch.

probe: parameterless_probe.py (AST + constants_registry.toml)

new Agnostic

Algorithm-invariant: two correct implementations converge to the same answer.

probe: agnostic_probe.py (no-dispatch + convergence oracle)

The promotion rule (enforced in code)

promote = parameterless.PASS AND agnostic.PASS AND orthogonal.PASS
A feature-wise tunable knob (parameterless FAIL) vetoes promotion even if orthogonal + agnostic pass. A project-wide constant does not block. This is the exact rule whose violation was the near-promotion to prevent.

Gate demo — does it prevent the mistake? Yes

candidate impl	parameterless	agnostic	orthogonal	decision
`bar_svd_entropy` (pinned to `SVD_ORDER`)	PASS	PENDING	PENDING	PENDING — agnostic oracle needs a 2nd reference impl
`add_antropy` (hardcoded `order=3`)	FAIL	SKIPPED	SKIPPED	BLOCKED — parameterless (feature-tunable knob vetoes)

The hardcoded impl is blocked on the FREE static axis — before any ClickHouse cost. The pinned impl is held PENDING; the gate never fakes a PASS.

Iterations

Iter 01 — Three axes, grounded in Terry msg 428 (verbatim)

Iter 02 — Agnostic provenance correction: algorithm-invariant, not asset-agnostic

Iter 03 — Parameterless + agnostic probes built (runnable demos)

Iter 04 — Three probes, one gate: architecture + promotion rule

Iter 05 — Parameterless promotion sweep: shared knob → project-wide constant

Source

Audit folder (findings + evidence): 2026-06-09-three-axis-probe-formalization
Probe code: findings/evolution/shared_data/{parameterless,agnostic}_probe.py, three_axis_gate.py, constants_registry.toml
Terry's ruling: Telegram Topic-5 msg id=428 / id=429 (2026-04-22)

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