{
 "conventions_md": "config/llm_conventions/arb.md",
 "mechanisms": {
  "fertility_priors": {
   "date": "2026-09-24",
   "enabled": false,
   "gold": "clear/AVD",
   "lambda": 2.0,
   "note": "measured 2026-09-24, whole Bible vs Clear gold, lambda=2: WASH, inside the noise floor on both scoring conditions (eflomal F1 .87275->.8729, Delta+0.00015 vs floor 0.0010; +gloss F1 .87415->.8744, Delta+0.00025 vs floor 0.0006). Not a loss -- flat, not worth the extra alignment-time complexity. Plausible unconfirmed hypothesis: arb already has GB070/072=1 (real morphological case), so its genitive/dative marking may already be adequately signaled without extra target fertility -- not verified, just a candidate reason not to spend more time here.",
   "source": "measured"
  }
 }
}