| """ |
| Build ORPO preference pairs from v7 dev-split SFT data. |
| Each pair: same Q → chosen=YES candidate's prompt+answer, rejected=NO candidate's prompt+answer. |
| """ |
| import argparse, os, sys, random |
| from collections import defaultdict |
| os.environ.setdefault("PYTHONNOUSERSITE", "1") |
| ROOT = "/weka/s225250685/mats-tist" |
| sys.path.insert(0, ROOT) |
| from datasets import load_from_disk, Dataset, DatasetDict |
|
|
|
|
| def main(): |
| ap = argparse.ArgumentParser() |
| ap.add_argument("--sft", default=os.path.join(ROOT, "data/sft_selector_v7_dev_pointwise_fb")) |
| ap.add_argument("--out", default=os.path.join(ROOT, "data/sft_selector_v7_orpo")) |
| ap.add_argument("--max_pairs_per_q", type=int, default=4) |
| args = ap.parse_args() |
|
|
| rng = random.Random(42) |
| dd = load_from_disk(args.sft) |
|
|
| def make_pairs(rows): |
| groups = defaultdict(lambda: {"yes": [], "no": []}) |
| for r in rows: |
| k = (r["question"], r["db_id"]) |
| (groups[k]["yes" if r["is_yes"] else "no"]).append(r) |
| out = [] |
| for k, g in groups.items(): |
| if not g["yes"] or not g["no"]: continue |
| rng.shuffle(g["yes"]); rng.shuffle(g["no"]) |
| pe = 0 |
| for y in g["yes"]: |
| for n in g["no"]: |
| if pe >= args.max_pairs_per_q: break |
| out.append({ |
| "prompt": y["prompt"], |
| "chosen": "YES", |
| "rejected": "NO", |
| "messages": [{"role": "user", "content": y["prompt"]}, |
| {"role": "assistant", "content": "YES"}], |
| "rejected_messages": [{"role": "user", "content": n["prompt"]}, |
| {"role": "assistant", "content": "NO"}], |
| "question": y["question"], "db_id": y["db_id"], |
| }) |
| pe += 1 |
| if pe >= args.max_pairs_per_q: break |
| return out |
|
|
| train_pairs = make_pairs(list(dd["train"])) |
| test_pairs = make_pairs(list(dd["test"])) |
| rng.shuffle(train_pairs); rng.shuffle(test_pairs) |
| print(f"train pairs: {len(train_pairs)} test pairs: {len(test_pairs)}") |
| DatasetDict({"train": Dataset.from_list(train_pairs), |
| "test": Dataset.from_list(test_pairs)}).save_to_disk(args.out) |
| print(f"SAVED: {args.out}") |
|
|
|
|
| if __name__ == "__main__": |
| main() |
|
|
