;; Cross-Domain NAL Hypothesis Generator v1.0 - Max Botnick 2026-04-23
;; Input: Two domain KBs with NAL beliefs. Output: Ranked novel hypotheses.
;;
;; ARCHITECTURE:
;; 1. Domain A beliefs: (= (domA term) (stv f c))
;; 2. Domain B beliefs: (= (domB term) (stv f c))
;; 3. Bridge finder: shared predicates/subjects across domains
;; 4. Abduction across bridge via |- operator
;; 5. Rank by expectation = (c * (f - 0.5) + 0.5)

;; === DOMAIN A: Marine Biology ===
(= ((--> coral_skeleton calcium_carbonate) (stv 1.0 0.9)) domA)
(= ((--> calcium_carbonate biomineralization) (stv 0.85 0.9)) domA)
(= ((--> coral_reef ecosystem_service) (stv 0.9 0.85)) domA)
(= ((--> biomineralization crystal_structure) (stv 0.8 0.85)) domA)

;; === DOMAIN B: Materials Science ===
(= ((--> perovskite crystal_structure) (stv 0.9 0.9)) domB)
(= ((--> crystal_structure photovoltaic_efficiency) (stv 0.75 0.8)) domB)
(= ((--> perovskite superconductor_candidate) (stv 0.6 0.7)) domB)
(= ((--> crystal_structure lattice_defect) (stv 0.7 0.75)) domB)

;; === BRIDGE DETECTION ===
;; Shared term: crystal_structure appears in both domains
;; domA: biomineralization --> crystal_structure
;; domB: crystal_structure --> photovoltaic_efficiency
;; This enables deduction chain: biomineralization --> photovoltaic_efficiency;; === PHASE 2: CROSS-DOMAIN INFERENCE VIA BRIDGE ===
;; Deduction across bridge: biomineralization --> crystal_structure, crystal_structure --> photovoltaic_efficiency
;; yields: biomineralization --> photovoltaic_efficiency

;; Step 1: Deduction chain through shared term
!(|- ((--> biomineralization crystal_structure) (stv 0.8 0.85))
     ((--> crystal_structure photovoltaic_efficiency) (stv 0.75 0.8)))

;; Step 2: Abduction — perovskite --> crystal_structure, biomineralization --> crystal_structure
;; yields: biomineralization --> perovskite (or reverse) as hypothesis
!(|- ((--> perovskite crystal_structure) (stv 0.9 0.9))
     ((--> biomineralization crystal_structure) (stv 0.8 0.85)))

;; Step 3: Analogy — if perovskite and coral_skeleton share crystal_structure pathway
;; perovskite --> crystal_structure, coral_skeleton --> calcium_carbonate --> biomineralization --> crystal_structure
!(|- ((--> perovskite crystal_structure) (stv 0.9 0.9))
     ((--> crystal_structure lattice_defect) (stv 0.7 0.75)))

;; Step 4: Abduction for novel material hypothesis
!(|- ((--> calcium_carbonate biomineralization) (stv 0.85 0.9))
     ((--> perovskite crystal_structure) (stv 0.9 0.9)))
;; === PHASE 3: HYPOTHESIS RANKING BY EXPECTATION ===
;; exp = c * (f - 0.5) + 0.5
;;
;; H1: biomineralization-->photovoltaic_efficiency (stv 0.6 0.408) exp=0.541
;; H2: biomineralization-->perovskite (stv 0.8 0.408) exp=0.622
;; H3: perovskite-->biomineralization (stv 0.9 0.38) exp=0.652
;; H4: perovskite-->lattice_defect (stv 0.63 0.425) exp=0.555
;; H5: lattice_defect-->perovskite (stv 1.0 0.298) exp=0.649
;;
;; RANKED BY EXPECTATION:
;; 1. perovskite-->biomineralization     exp=0.652  (MOST NOVEL: materials science predicts biology)
;; 2. lattice_defect-->perovskite         exp=0.649  (reverse inference, moderate novelty)
;; 3. biomineralization-->perovskite      exp=0.622  (biology predicts material candidate)
;; 4. perovskite-->lattice_defect         exp=0.555  (within-domain, low novelty)
;; 5. biomineralization-->photovoltaic    exp=0.541  (cross-domain deduction, highest novelty path)
;;
;; KEY INSIGHT: H1 has lowest expectation but highest NOVELTY — it bridges
;; marine biology to solar energy via crystal_structure. A confidence-boosting
;; revision with independent evidence would promote it.
;;
;; TOOL USAGE: Replace domA/domB beliefs with any two domains sharing a predicate.
;; The |- operator automatically produces deduction+abduction hypotheses.
;; Rank by expectation, filter by cross-domain novelty.