| """Final verifier: score the run from the grader ledger. |
| |
| reward hidden test score of the submission with the best validation score |
| (ties go to the earlier submission); 0 if nothing was submitted. |
| auarc area under the curve of that same quantity over the wall-clock budget, |
| using the time each validation score became available, divided by the |
| budget. 0 before the first graded submission. |
| """ |
|
|
| import json |
| from pathlib import Path |
|
|
| STATE = Path("/var/lib/are") |
| OUT = Path("/logs/verifier") |
| OUT.mkdir(parents=True, exist_ok=True) |
|
|
| meta = json.loads((STATE / "meta.json").read_text()) if (STATE / "meta.json").exists() else {} |
| budget = float(meta.get("budget_seconds") or 1.0) |
|
|
| subs: dict[int, dict] = {} |
| ledger = STATE / "ledger.jsonl" |
| for line in (ledger.read_text().splitlines() if ledger.exists() else []): |
| ev = json.loads(line) |
| s = subs.setdefault(ev["id"], {"id": ev["id"]}) |
| if ev["event"] == "submitted": |
| s["submitted_t"] = ev["t"] |
| elif ev["event"] == "val": |
| s["val"] = ev["score"] |
| s["val_t"] = ev["t"] |
| elif ev["event"] == "test": |
| s["test"] = ev["score"] |
|
|
| graded = sorted((s for s in subs.values() if "val" in s), key=lambda s: s["val_t"]) |
|
|
| |
| auc, best, last_t, cur = 0.0, None, 0.0, 0.0 |
| timeline = [] |
| for s in graded: |
| t = min(s["val_t"], budget) |
| auc += cur * (t - last_t) |
| last_t = t |
| if best is None or s["val"] > best["val"] or (s["val"] == best["val"] and s["id"] < best["id"]): |
| best = s |
| cur = float(best.get("test") or 0.0) |
| timeline.append({"t": s["val_t"], "id": s["id"], "val": s["val"], "test": s.get("test"), |
| "pick": best["id"]}) |
| auc += cur * (budget - last_t) if last_t < budget else 0.0 |
|
|
| reward = { |
| "reward": float(best.get("test") or 0.0) if best else 0.0, |
| "auarc": auc / budget, |
| "best_val": float(best["val"]) if best else 0.0, |
| "n_submissions": float(len(subs)), |
| "n_test_graded": float(sum(s.get("test") is not None for s in subs.values())), |
| } |
| (OUT / "reward.json").write_text(json.dumps(reward)) |
| (OUT / "timeline.json").write_text(json.dumps({"budget": budget, "selected": best and best["id"], |
| "submissions": timeline}, indent=1)) |
| print(json.dumps(reward, indent=1)) |
|
|
