Pith Number

pith:ONWJNFIE

pith:2019:ONWJNFIEYF5SWZYIHSWDBFI5BO

not attested not anchored not stored refs pending

Transfer Learning for Risk Classification of Social Media Posts: Model Evaluation Study

Derek Howard, Geoffrey Woollard, Jacob Ritchie, Justin Lee, Leon French, Marta Maslej

arxiv:1907.02581 v2 · 2019-07-04 · cs.CL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ONWJNFIEYF5SWZYIHSWDBFI5BO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:40:54.891082Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

736c969504c17b2b67083cac30951d0b82b6ae3e53b0701dcbe1c35e66632145

Aliases

arxiv: 1907.02581 · arxiv_version: 1907.02581v2 · doi: 10.48550/arxiv.1907.02581 · pith_short_12: ONWJNFIEYF5S · pith_short_16: ONWJNFIEYF5SWZYI · pith_short_8: ONWJNFIE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ONWJNFIEYF5SWZYIHSWDBFI5BO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 736c969504c17b2b67083cac30951d0b82b6ae3e53b0701dcbe1c35e66632145

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cac741141927be9e02fea1aed4912b5edca4dcb1493d2dce33e2c34667109eaa",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-07-04T20:37:44Z",
    "title_canon_sha256": "6158c29a976a372687d35e7d4139f5dba964b23c72601ce5eac518bcb44c953f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02581",
    "kind": "arxiv",
    "version": 2
  }
}