Pith Number

pith:VRVM5OKQ

pith:2012:VRVM5OKQBK4VEEWPUYNGZRXRAQ

not attested not anchored not stored refs pending

Beyond Stemming and Lemmatization: Ultra-stemming to Improve Automatic Text Summarization

Juan-Manuel Torres-Moreno

arxiv:1209.3126 v1 · 2012-09-14 · cs.IR · 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{VRVM5OKQBK4VEEWPUYNGZRXRAQ}

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	2026-05-18T03:45:32.751280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac6aceb9500ab95212cfa61a6cc6f1040ba006b8ad9114f45c6a81844372a17d

Aliases

arxiv: 1209.3126 · arxiv_version: 1209.3126v1 · doi: 10.48550/arxiv.1209.3126 · pith_short_12: VRVM5OKQBK4V · pith_short_16: VRVM5OKQBK4VEEWP · pith_short_8: VRVM5OKQ

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/VRVM5OKQBK4VEEWPUYNGZRXRAQ \
  | 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: ac6aceb9500ab95212cfa61a6cc6f1040ba006b8ad9114f45c6a81844372a17d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae06052c56823219f2b2c2b98b6fdf0d9454140eb047468b17c1072f2156557a",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2012-09-14T08:45:26Z",
    "title_canon_sha256": "d5558f0dd031030f19b12602d0988912013d45d629306d423385e875d9875a68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3126",
    "kind": "arxiv",
    "version": 1
  }
}