Pith Number

pith:WPYELHOP

pith:2021:WPYELHOPPZLLX676DQDAQBMO7H

not attested not anchored not stored refs pending

Using Transformer based Ensemble Learning to classify Scientific Articles

Ankush Chopra, Sohom Ghosh

arxiv:2102.09991 v2 · 2021-02-19 · 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{WPYELHOPPZLLX676DQDAQBMO7H}

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	2026-07-05T02:37:10.326392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3f0459dcf7e56bbfbfe1c0608058ef9c6a0c053243fcd065cd0f7a89ed0ef9a

Aliases

arxiv: 2102.09991 · arxiv_version: 2102.09991v2 · doi: 10.48550/arxiv.2102.09991 · pith_short_12: WPYELHOPPZLL · pith_short_16: WPYELHOPPZLLX676 · pith_short_8: WPYELHOP

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/WPYELHOPPZLLX676DQDAQBMO7H \
  | 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: b3f0459dcf7e56bbfbfe1c0608058ef9c6a0c053243fcd065cd0f7a89ed0ef9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ba8c094c7be8a097f4aac12613d40382f276a0c1170d9666ed122fa0eeec7a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-02-19T15:42:26Z",
    "title_canon_sha256": "1dd186e0e7ba1c6d648e2be8645df3453163ac5465db63de7718d54ecdf5b4f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.09991",
    "kind": "arxiv",
    "version": 2
  }
}