Between 2026-05-17 and 2026-05-22 the inference_closure lane regressed
from all_pass_rate=1.0 to 0.4 on public. Root cause: the
_DECLARATIVE_RELATION_RE branch in generate/intent.py runs ahead of the
_RULES loop and swallowed sentences beginning with 'Actually' into the
subject phrase, routing them to VERIFICATION. The lane's premise emit
path is gated on CORRECTION intent, so PackMutationProposal records
stopped being emitted for any non-'is' relation (precedes / grounds /
causes / reveals). Only the four transitive_is cases passed because
'is' is not in the declarative-relation verb list.
Fix: _CORRECTION_CUE_PREFIX_RE guard. When the text begins with a
correction cue ('Actually', 'Incorrect, ', 'No, ', 'Correction'), the
declarative-match branch is skipped and the sentence falls through to
the _RULES CORRECTION rule. Plain declarative-relation assertions still
route to VERIFICATION unchanged.
Lane on 2026-05-22 post-fix:
dev/v1: all_pass_rate=1.0, overall_pass=True (5 cases)
public/v1: all_pass_rate=1.0, overall_pass=True (20 cases)
- tests/test_correction_cue_prefix_routing.py pins both halves of the
guard (10 new tests).
- evals/inference_closure/gaps.md documents the regression + fix in a
new section, preserving the 2026-05-17 resolution narrative.
- evals/inference_closure/results/ now carries canonical v1_dev and
v1_public reports (the lane had no checked-in results before; ADR-0110
will reference these).
This unblocks the second of ADR-0107's two named blockers. ADR-0110
(math expert-demo re-attempt) now becomes feasible once the math
domain's three lanes have signed-and-digested evidence.
Closes the two skipped null-preservation tests and the architectural
gap behind them. In CGA, null vectors represent Euclidean points;
under a conformal transformation a point must map to a point —
applying a versor sandwich to a null vector must preserve null
property. The previous implementation forced everything onto the
unit-versor shell, which is correct for field-state propagation but
wrong for geometric point input.
Implementation
- algebra/versor.py: new `_input_is_null(F)` checks `cga_inner(F,F) ≈ 0`;
`versor_apply` routes null inputs around `_close_applied_versor`
and returns the raw sandwich V·F·rev(V), which algebraically
preserves null property. Non-null inputs unchanged.
- core-rs/src/versor.rs: `versor_apply_closed_f64` gains the same
null-check branch via `input_is_null_f64`. ADR-0020 parity
preserved (8/8 versor_apply bit-identity tests still pass).
Test changes
- tests/test_architectural_invariants.py::TestINV06NullConePreservation::
test_versor_apply_preserves_null_property — un-skipped, passes.
- tests/test_rust_backend.py::test_rust_versor_apply_preserves_null_vectors
— un-skipped, passes.
- tests/test_versor_closure.py::test_versor_apply_closes_null_like_field_
results_for_runtime_contract — renamed to
test_versor_apply_preserves_null_property_for_null_inputs and
rewritten to assert the now-correct semantics (null in → null out).
The old contract over-specified closure for null inputs and
contradicted the architectural invariant; that's what kept the
invariant test skipped.
Stale gap docs updated
- inference_closure / cross_domain_transfer / multi_step_reasoning
gaps.md now lead with a resolution block: lanes pass at 100% on
both splits after the typed operators (transitive_walk,
multi_relation_walk, path_recall in generate/operators.py) +
pipeline wiring (_maybe_transitive_walk + _fold_walk_into_surface)
landed. The historic findings are preserved below for traceability.
- compositionality gaps.md: partial resolution — recall up from
6.25% to 68.75%; overall_pass True; residual ~30% miss requires
a relation-aware `compose_relations` operator (v2 follow-on).
Lane health unchanged: algebra 132, smoke 55, runtime 19, teaching 17,
packs 6, cognition 103. Cognition eval 100%. Four formerly-"blocked"
reasoning lanes confirmed 100% / overall_pass=True end-to-end.
First Phase 3 lane. Scores whether CORE can derive entailments that
were not directly asserted, given a chain of premises taught through
the correction loop. Five transitive relation patterns drawn from
en_core_cognition_v1:
transitive_is A is B; B is C -> What is A?
transitive_precedes A precedes B; B precedes C -> What does A precede?
transitive_grounds A grounds B; B grounds C -> What does A ground?
transitive_causes A causes B; B causes C -> What does A cause?
transitive_belongs_to A belongs_to B; B belongs_to C -> Where does A belong?
Pass = expected entailment token appears in probe response surface
or walk surface (M1 or M2) AND every premise stored (M3) AND
trace_hash deterministic across two fresh runs (M4).
Results:
split n derived stored replay overall_pass
public/v1 20 0.0 1.0 1.0 False
holdouts/v1 12 0.0 1.0 1.0 False
This is the expected honest failure per docs/capability_roadmap.md
Phase 3. Foundation guarantees from Phase 2 (storage + replay) hold
at this depth; the inference-closure step itself does not yet exist
in CORE. The lane scores exactly the gap.
Concrete trace recorded in gaps.md: for premises 'wisdom is light',
'light is truth', probe 'What is wisdom?' returns the template
'wisdom is defined as ...' — vault retrieves 9 entries including
both premises, but the realizer emits a definition stub instead of
a derivation.
Architectural gaps filed (evals/inference_closure/gaps.md):
Gap 1. generate/graph_planner.py has no transitive composition —
plan_articulation picks a single node; there is no chained
relation walk that produces a derived node from premises.
Gap 2. field/propagate.py has no derivable-but-not-asserted recall
path — vault retrieval is direct CGA inner product; no
path-recall operator over relation-typed edges.
Both gaps are v2 engineering candidates and may share an
implementation surface. The lane is permanent regression evidence
of what specifically is missing.
Includes:
- contract.md: pass criteria, anti-overfitting note, sub-metric
definitions, calibration approach.
- runner.py: parallel, fresh-pipeline-per-case, M1-M4 scoring,
two-run replay-determinism check.
- dev/cases.jsonl (5), public/v1 (20), holdouts/v1 (12) — disjoint
entity sets, all five patterns covered.
- baselines/v1_structural_zero.json: frontier LLMs do not emit
the typed signals by construction.
- gaps.md: full architectural finding, engineering shapes for v2.
CLI suites smoke / cognition / teaching pass; no regression on
Phase 2 work.
