Pith Number

pith:OAQZOC6W

pith:2011:OAQZOC6WIN7AJWNOKIHZ4IUMPA

not attested not anchored not stored refs pending

LexRank: Graph-based Lexical Centrality as Salience in Text Summarization

Dragomir R. Radev, Gunes Erkan

arxiv:1109.2128 v2 · 2011-09-09 · 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{OAQZOC6WIN7AJWNOKIHZ4IUMPA}

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	2026-05-18T04:12:11.469982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7021970bd6437e04d9ae520f9e228c78368afb5f1a083f54c4bf6027da471615

Aliases

arxiv: 1109.2128 · arxiv_version: 1109.2128v2 · doi: 10.48550/arxiv.1109.2128 · pith_short_12: OAQZOC6WIN7A · pith_short_16: OAQZOC6WIN7AJWNO · pith_short_8: OAQZOC6W

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/OAQZOC6WIN7AJWNOKIHZ4IUMPA \
  | 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: 7021970bd6437e04d9ae520f9e228c78368afb5f1a083f54c4bf6027da471615

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9491151835e886504df65601cbeb16469e235ca8d525e93b3b6f2e5fce82114c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2011-09-09T20:20:38Z",
    "title_canon_sha256": "e1ea840c23037a828d33aa00b83655b8e383692e789c63cce433191d3625484a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2128",
    "kind": "arxiv",
    "version": 2
  }
}