Pith Number

pith:PQY6SLJ6

pith:2023:PQY6SLJ6HLA5ELCRUF2BSUCSCD

not attested not anchored not stored refs pending

Evaluating Dynamic Topic Models

Charu James, Marius Kloft, Mayank Nagda, Nooshin Haji Ghassemi, Sophie Fellenz

arxiv:2309.08627 v1 · 2023-09-12 · cs.CL · cs.IR · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PQY6SLJ6HLA5ELCRUF2BSUCSCD}

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	2026-07-05T06:51:11.057662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c31e92d3e3ac1d22c51a17419505210ecbfede26f0aca6d28bb1c30cdfa07d5

Aliases

arxiv: 2309.08627 · arxiv_version: 2309.08627v1 · doi: 10.48550/arxiv.2309.08627 · pith_short_12: PQY6SLJ6HLA5 · pith_short_16: PQY6SLJ6HLA5ELCR · pith_short_8: PQY6SLJ6

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/PQY6SLJ6HLA5ELCRUF2BSUCSCD \
  | 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: 7c31e92d3e3ac1d22c51a17419505210ecbfede26f0aca6d28bb1c30cdfa07d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4b5ed4a45657c2760d5c98ae37949fd26c561b538795624617e352668196973",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2023-09-12T13:30:25Z",
    "title_canon_sha256": "e218ff78075fa333f7751552971759bab423dd5c3f89014eda8d0dfda409199a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.08627",
    "kind": "arxiv",
    "version": 1
  }
}