{
  "created_at": "2026-07-13 03:38:30",
  "name": "v33_task_arith_v29_live55_r325",
  "method": "task_arithmetic",
  "formula": "theta_v29 + 0.55*(theta_v31-theta_v29) + 0.25*(theta_v32-theta_v29)",
  "base": "/home/ll/llm4rec/experiments/outputs/v29_v19_user_world_guard_lr8e7_ep018",
  "experts": [
    {
      "path": "/home/ll/llm4rec/experiments/outputs/v31_v29_live_specialist_r3_lr12e6_ep035",
      "task_vector_scale": 0.55
    },
    {
      "path": "/home/ll/llm4rec/experiments/outputs/v32_v29_balanced_r3_draft_lr8e7_ep020",
      "task_vector_scale": 0.25
    }
  ],
  "rationale": "Approximate OneReason specialize-then-unify without leaderboard labels: retain 20% explicit v29 weight, emphasize the live-domain expert, and add a smaller balanced R3 cognition delta.",
  "cot_policy": "All checkpoints descend from the CoT-native v29/v19 line; v7 is not used.",
  "reproduce": "demo/LLaMA-Factory/.venv/bin/python experiments/task_arithmetic.py --name v33_task_arith_v29_live55_r325 --overwrite",
  "runtime_seconds": 2.11
}