Datasets:

HCAI-Lab
/

soc91-labels

Mirror of the R2 prefix soc91-labels/ from soc127-dedup (Cloudflare R2) into a private HF Dataset. Generated by scripts/handoff/mirror_r2_sidecar_prefix.py on 2026-05-23.

Each row in the source R2 parquets is preserved, with one additional column appended: source_shard_path — the R2 object key the row came from. This lets you reconstruct the per-shard view if needed.

Counts

	Source (R2)	Mirror (this dataset)
Files	58,465	2,719 (concat into ~60 MB chunks)
Size	~150 GB (approx, mixed schemas)	169.94 GB

Loading

from datasets import load_dataset
ds = load_dataset("HCAI-Lab/soc91-labels")
# or for a single chunk:
import pyarrow.parquet as pq
table = pq.read_table("data_00000.parquet")

Schema

Schema matches the per-shard WebOrganizer sidecar parquet schema as defined in src/dolma/sidecar_manifest_fields.py:43-124 (data-attribution repo), plus the appended source_shard_path column. The underlying classifier produced both an "old" schema (label ids only) and a "new" schema (label ids plus per-label probability vectors); the concatenated table promotes nullable columns so rows from both schemas coexist.

Per-row fields (subset; see source for the full list):

doc_id — Dolma document UUID
weborganizer_topic_id, weborganizer_topic — top-1 topic class (24 categories)
weborganizer_format_id, weborganizer_format — top-1 format class (24 categories)
weborganizer_topic_confidence, weborganizer_format_confidence — top-1 probabilities
weborganizer_topic_probabilities, weborganizer_format_probabilities — full probability vectors (new-schema rows only; null on old-schema rows)
source_shard_path — the R2 object key the row originated from

Lineage

SOC-91 (initial label generation)
SOC-142 (inverted-quality-label fix at commit 3342baf; affects the quality sidecars in HCAI-Lab/soc139-quality-sidecars, not the topic/format labels here)

Notes

The chunked-write/stream-upload pipeline succeeded and committed all 2,719 chunks.
The original write_readme() step crashed (after upload) because the staging directory files were already deleted by the stream-upload pattern. This README was written by hand after the fact based on the script's final log output (wrote 2719 chunks total).