File size: 3,157 Bytes
1b929be | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | """Passage pool for reranker training: FineWeb-2 / FineWeb (ODC-BY) chunks of 2-6 consecutive sentences (120-1200 chars).
python rerank/build_passages.py OUT.parquet [PER_LANG] (CPU job; file list from lid/fw_files.json)
Columns: pid, text, lang (FineWeb-2 subset code), url. English gets 4x PER_LANG.
"""
import json, os, random, re, sys, time
from multiprocessing import Pool
OUT = sys.argv[1]
PER = int(sys.argv[2]) if len(sys.argv) > 2 else 8000
FW = json.load(open(os.path.join(os.path.dirname(os.path.abspath(__file__)), "..", "lid", "fw_files.json")))
LANGS = ("arb_Arab ben_Beng deu_Latn spa_Latn fas_Arab fin_Latn fra_Latn hin_Deva ind_Latn jpn_Jpan kor_Hang rus_Cyrl swh_Latn "
"tel_Telu tha_Thai yor_Latn cmn_Hani bul_Cyrl ces_Latn dan_Latn ita_Latn nld_Latn nob_Latn por_Latn ron_Latn srp_Cyrl "
"swe_Latn pol_Latn tur_Latn ukr_Cyrl vie_Latn heb_Hebr ell_Grek hun_Latn zsm_Latn fil_Latn urd_Arab tam_Taml mar_Deva "
"slk_Latn hrv_Latn cat_Latn lit_Latn ekk_Latn lvs_Latn slv_Latn").split()
SPLIT = re.compile(r"(?<=[.!?。！？।؟።])\s+|\n+")
def collect(args):
lang, repo, files, per = args
import pyarrow.parquet as pq
from huggingface_hub import HfFileSystem
rng = random.Random(7 + sum(map(ord, lang))); fs = HfFileSystem(); rows = []
def retry(fn):
for k in range(6):
try:
return fn()
except Exception:
if k == 5:
raise
time.sleep(20 * (k + 1))
try:
for f in files:
pf = retry(lambda: pq.ParquetFile(fs.open(f"datasets/{repo}/{f}")))
for g in range(pf.num_row_groups):
tb = retry(lambda: pf.read_row_group(g, columns=["text", "url"]))
for text, url in zip(tb.column("text").to_pylist(), tb.column("url").to_pylist()):
sents = [s.strip() for s in SPLIT.split(text or "") if len(s.strip()) >= 10]
if len(sents) < 2:
continue
k = rng.randint(2, 6); i = rng.randrange(max(1, len(sents) - k + 1))
t = " ".join(sents[i:i + k])
if 120 <= len(t) <= 1200:
rows.append((t, lang, url))
if len(rows) >= per:
break
if len(rows) >= per:
break
if len(rows) >= per:
break
except Exception as e:
print(lang, "failed", e, flush=True)
print(lang, len(rows), flush=True)
return rows
if __name__ == "__main__":
import pandas as pd
jobs = [("eng_Latn", "HuggingFaceFW/fineweb", FW["fineweb_eng"], PER * 4)] + [(l, "HuggingFaceFW/fineweb-2", FW["fineweb2"][l], PER) for l in LANGS]
with Pool(int(os.environ.get("NPROC", 14))) as p:
res = p.map(collect, jobs)
df = pd.DataFrame([r for rs in res for r in rs], columns=["text", "lang", "url"]).drop_duplicates("text").reset_index(drop=True)
df.insert(0, "pid", range(len(df)))
df.to_parquet(OUT); print("passages", len(df), df.lang.nunique(), "langs", flush=True)
os._exit(0)
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