fdfb71f59b
core chat now decides Aristotelian syllogisms end-to-end -- the marquee
'basic logical work' widening. Closes Phase 0's fork: the ONLY categorical
decider was evals/syllogism/oracle.py (the sealed independence oracle serving
must not import; INV-25). This ships a production decider.
generate/proof_chain/categorical.py lowers a categorical argument to the
propositional regime (one Boolean atom per term-membership profile) and rides
the already-verified ROBDD engine -- no new decision procedure, soundness
inherits from the flagship. Sound AND complete for the modern/Boolean reading
(Darapti + existential-import-only forms correctly INVALID), with no reliance
on a lucky domain size. Independent of the eval oracle by mechanism (ROBDD-
over-profiles vs brute-force finite-model enumeration); proven by case-for-case
agreement with it across the whole syllogism gold lane.
New: generate/proof_chain/categorical.py, render_syllogism (deterministic
valid/invalid/inconsistent templates), CATEGORICAL shape-band, arena
categorical band (4 valid forms + 2 invalid, by-construction gold cross-checked
vs the independent syllogism oracle), tests/test_categorical_decider.py (8
tests incl. the independence-by-agreement proof).
Changed: chat/deduction_surface.py (categorical branch, license-gated via a
shared _license_gate helper; propositional path byte-identical), arena
DeductionSolver dual-path in lock-step with the composer, re-sealed ledger (5
bands, categorical earns SERVE at 0.99087 wrong=0), Phase-2 lane decide()
mirrors the dual path with the 3 categorical cases reclassified to their true
valid/invalid verdicts + 1 invalid case (n 27->28), report+SHA regenerated.
Honest wrinkles: irregular plurals ('fish') decline with unknown_morphology
(a reader limit, correctly not a wrong); surfaces read in singularized terms
('all whale are animal') -- the exact ids the engine reasoned over, no cosmetic
re-pluralization that could drift from the decision.
[Verification]: smoke 180 passed; cognition 122 passed/1 skipped; core test
--suite deductive 45 passed; test_categorical_decider 8 passed; practice
runner 5 bands all SERVE wrong=0; deduction_serve lane SHA regenerates to the
committed pin.
40 lines
721 B
JSON
40 lines
721 B
JSON
{
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"aggregate": {
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"correct": 28,
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"declined": 0,
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"n": 28,
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"wrong": 0
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},
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"all_correct": true,
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"arc": "deduction-serve",
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"lane": "deduction_serve",
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"schema_version": 1,
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"splits": {
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"v1": {
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"all_cases_correct": true,
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"by_gold": {
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"declined": 6,
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"entailed": 8,
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"invalid": 1,
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"refuted": 5,
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"unknown": 5,
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"valid": 3
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},
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"correct_by_gold": {
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"declined": 6,
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"entailed": 8,
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"invalid": 1,
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"refuted": 5,
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"unknown": 5,
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"valid": 3
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},
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"counts": {
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"correct": 28,
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"declined": 0,
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"wrong": 0
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},
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"n": 28
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}
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},
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"wrong_is_zero": true
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}
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