Pith Number

pith:QVAAC47G

pith:2013:QVAAC47GXLKXN67W4DTPETOFHU

not attested not anchored not stored refs pending

Key Phrase Extraction of Lightly Filtered Broadcast News

Anatole Gershman, David Martins de Matos, Jaime Carbonell, Jo\~ao P. Neto, Luis Marujo, Ricardo Ribeiro

arxiv:1306.4890 v1 · 2013-06-20 · cs.CL · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QVAAC47GXLKXN67W4DTPETOFHU}

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	2026-05-18T03:20:21.255456Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85400173e6bad576fbf6e0e6f24dc53d2630937de0dbcc2e1c73dafffba55096

Aliases

arxiv: 1306.4890 · arxiv_version: 1306.4890v1 · doi: 10.48550/arxiv.1306.4890 · pith_short_12: QVAAC47GXLKX · pith_short_16: QVAAC47GXLKXN67W · pith_short_8: QVAAC47G

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/QVAAC47GXLKXN67W4DTPETOFHU \
  | 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: 85400173e6bad576fbf6e0e6f24dc53d2630937de0dbcc2e1c73dafffba55096

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "848e2359fc75e33a065b40f508611ffbef191763db751a1eda4ddb1dc4d360e6",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2013-06-20T14:35:22Z",
    "title_canon_sha256": "29ff742698ad061c137b1a45c99423c21dd69340c36aa030f61c5604a9b10dac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4890",
    "kind": "arxiv",
    "version": 1
  }
}